JP6523534B2

JP6523534B2 - Air conditioning billing system and method

Info

Publication number: JP6523534B2
Application number: JP2018122720A
Authority: JP
Inventors: 仁峯; 龍太太宰
Original assignee: Azbil Corp
Current assignee: Azbil Corp
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2019-06-05
Anticipated expiration: 2034-04-02
Also published as: JP2018185140A

Description

本発明は、熱源から熱媒が供給される１つの熱媒系統に複数の空調ユニットが配置され、且つその熱媒系統に複数の請求先が存在する場合において、複数の請求先の空調料金を算出する空調課金システムおよび方法に関するものである。 In the present invention, when a plurality of air conditioning units are disposed in one heat medium system to which the heat medium is supplied from the heat source, and there are a plurality of billing destinations in the heat medium system, a plurality of air conditioning charges for the plurality of billing destinations The present invention relates to an air conditioning billing system and method to be calculated.

従来の空調の課金方式、例えばセントラルシステムの課金方式では、賃料や共益費に、コア時間帯内の空調でのエネルギー消費量を含めるようにしている。コア時間外（一般的には、１８時から翌朝８時まで）については、空調機の運転時間を積算し、この運転時間の積算値に１時間あたりの空調料金を乗じて時間外空調料金を算出し、追加徴収するようにしていた（図５）。 In the conventional air conditioning charging system, for example, in the central system charging system, the rent and common area costs include the energy consumption in the air conditioning within the core time zone. Outside the core time (generally, from 18:00 to 8:00 the next morning) integrate the operating time of the air conditioner, multiply the integrated value of this operating time by the air conditioning charge per hour to obtain the overtime air conditioning charge It was calculated and added to collect (Fig. 5).

別の課金方式、例えば従量課金方式は、図６に示すように空調機１００毎に熱量計１０１によって熱量を計量し、積算した熱量に熱量単価を乗じて空調料金を算出し徴収する方式であり、空調料金請求の透明性を重視する場合に用いられるケースが多い方式である。この課金方式では、空調機１００毎を最小単位としてテナントに貸すことが基本となるが、１つの空調機１００で複数のテナント１０２−１〜１０２−３の空調をしているときは、熱量計１０１で積算した熱量を、床面積、ＶＡＶ（Variable Air Volume）定格能力、ＶＡＶ運転時間などで按分して、各テナント１０２−１〜１０２−３の空調料金を算出する場合が多い。 Another billing method, for example, a pay-as-you-go billing method, is a method of measuring the heat amount with the calorimeter 101 for each air conditioner 100 as shown in FIG. This method is often used in cases where importance is placed on the transparency of the air conditioning charge. In this charging method, it is basic to lend to tenants the minimum unit of each air conditioner 100. However, when one air conditioner 100 is air conditioning a plurality of tenants 102-1 to 102-3, a calorimeter In many cases, the air conditioning charge of each of the tenants 102-1 to 102-3 is calculated by dividing the heat amount integrated in 101 by floor area, VAV (Variable Air Volume) rated capacity, VAV operation time, and the like.

別の課金方式、ビル用マルチ方式の課金方式は、図７に示すように室外機２００毎に電力量計２０１によって電力を計量し、積算した電力量に電力単価を乗じて空調料金を算出し徴収する方式であり、ビル用マルチ方式で最も一般的な課金方式である。この課金方式では、室外機２００毎を最小単位としてテナントに貸すことが基本となるが、１つの室外機２００で複数のテナント２０２−１〜２０２−３の空調をしているときは、電力量計２０１で積算した電力量を、メーカー独自の算定式によって室内機２０３−１〜２０３−３毎に按分して、各テナント２０２−１〜２０２−３の空調料金を算出する場合が多い。 As shown in FIG. 7, another charging method and multi-building charging method measure the power by the power meter 201 for each outdoor unit 200 and multiply the integrated power amount by the power unit price to calculate the air conditioning charge. It is a method of collecting, and is the most common charging method in a multi-building system. In this charging method, it is basic to lent to the tenant with the minimum unit as each outdoor unit 200, but when the air conditioning of a plurality of tenants 202-1 to 202-3 is performed by one outdoor unit 200, the amount of power is In many cases, the air conditioning charge of each of the tenants 202-1 to 202-3 is calculated by dividing the electric energy accumulated by the total 201 among the indoor units 203-1 to 203-3 according to a manufacturer-specific calculation formula.

一方、ファンコイルユニット（Fan Coil Unit、以下ＦＣＵ）など、室内に個別に空調ユニットが分散設置された場合、各々の空調ユニットに対して個別に課金を行おうとする場合は、それぞれの空調ユニットに特定計量器を設置し課金を行う必要があるが、このような方式では、設置しなければならない計量器の数が多くなり、大幅なコスト負担となるため、現実的でない。上記のセントラルシステムの課金方式では、空調料金課金の透明性を求める要求に応えることができない。熱媒系統毎（フロア単位など）に特定計量器を設置すれば、熱媒系統毎に課金を行うことができるが、その熱媒系統に複数の請求先（テナントなど）が存在する場合には、請求先毎に特定計量器を設置しなければならない。 On the other hand, when air conditioning units such as fan coil units (FCUs) (hereinafter referred to as FCU) are separately installed in the room individually, if it is intended to charge separately for each air conditioning unit, each air conditioning unit should be Although it is necessary to install and charge a specific measuring instrument, such a method is not practical because the number of measuring instruments to be installed becomes large and it causes a large cost burden. The above-mentioned central system charging system can not meet the demand for transparency of the air conditioning charge. If a specific measuring instrument is installed for each heat medium system (floor unit etc.), charging can be performed for each heat medium system, but if there are multiple billing destinations (tenant etc.) in the heat medium system , Each specific billing address must be installed.

従来、ＦＣＵを備えた空調設備において、省エネルギーのために、ＦＣＵのバルブの開時間と、バルブの開度によって定まる容量係数と、ＦＣＵの入口と出口における流体の温度差と、ＦＣＵの入口と出口における流体の圧力差に基づいてＦＣＵの消費熱量を算出することにより、複数のＦＣＵで消費されるエネルギーを個別に管理する技術が提案されている（特許文献１参照）。特許文献１に開示された技術によれば、消費熱量をＦＣＵ毎に算出することができるので、請求先に属するＦＣＵの消費熱量を合計すれば、熱媒系統に複数の請求先が存在する場合においても、空調料金を請求先毎に算出することができると考えられる。 Conventionally, in an air conditioning system equipped with an FCU, to save energy, the opening time of the FCU valve, the volume coefficient determined by the opening degree of the valve, the temperature difference between the fluid at the inlet and outlet of the FCU, and the inlet and outlet of the FCU There has been proposed a technology for individually managing energy consumed by a plurality of FCUs by calculating the heat consumption of the FCU based on the pressure difference of the fluid in (1) (see Patent Document 1). According to the technology disclosed in Patent Document 1, since the heat consumption can be calculated for each FCU, if the heat consumption of the FCU belonging to the billing destination is totaled, a plurality of billing destinations exist in the heat medium system Also, it is considered that the air conditioning charge can be calculated for each billing destination.

特開２００８−４５８５５号公報JP, 2008-45855, A

上記のとおり、特許文献１に開示された技術によれば、熱媒系統に複数の請求先が存在する場合においても、空調料金を請求先毎に算出できると考えられるが、ＦＣＵのバルブの開度とＦＣＵの入口と出口における流体の温度差のみからＦＣＵの消費熱量を算出することになるため、消費熱量の算出精度が悪く、空調料金を公平且つ正確に算出することが難しいという問題点があった。算出精度を上げるためにバルブ前後差圧を計測しようとすると、ＦＣＵ毎に圧力センサを設置する必要があるため、大幅なコスト増となり、現実的には実現が難しい。 As described above, according to the technology disclosed in Patent Document 1, even when there are multiple billing destinations in the heat medium system, it is considered that the air conditioning charge can be calculated for each billing destination. Since the heat consumption of the FCU is calculated only from the temperature difference of the fluid at the inlet and outlet of the FCU, the calculation accuracy of the heat consumption is poor, and it is difficult to calculate the air conditioning charge fairly and accurately. there were. If it is necessary to install a pressure sensor for each FCU when trying to measure the differential pressure between the valves in order to improve the calculation accuracy, the cost increases significantly and it is practically difficult to realize.

本発明は、上記課題を解決するためになされたもので、熱源から熱媒が供給される１つの熱媒系統に複数の空調ユニットが配置され、且つその熱媒系統に複数の請求先が存在する場合においても、空調ユニット毎に計量器を設置することなく複数の請求先の空調料金を精度良く算出することができる空調課金システムおよび方法を提供することを目的とする。 The present invention has been made to solve the above problems, and a plurality of air conditioning units are disposed in one heat medium system to which a heat medium is supplied from a heat source, and a plurality of billing destinations exist in the heat medium system. It is an object of the present invention to provide an air conditioning charging system and method capable of accurately calculating a plurality of air conditioning charges of multiple billing destinations without installing a weighing instrument for each air conditioning unit.

本発明は、熱源と空調ユニットとの間で熱媒を循環させるための熱媒系統に、冷却または加熱した空気を空調エリアに送る複数の第１の空調ユニットと、冷却または加熱した外気を前記第１の空調ユニットに送る第２の空調ユニットとが配置され、その熱媒系統に複数の請求先が存在する空調システムにおいて、複数の請求先の空調料金を算出する空調課金システムであって、前記熱媒系統に設置された空調ユニットのうちの少なくとも一部に熱媒を供給する熱媒往き配管とこの熱媒往き配管から熱媒の供給を受ける前記第１、第２の空調ユニットとを構成単位として、この構成単位について消費熱量と熱源から供給される往き熱媒の温度とを計測する計量器と、前記構成単位に属する第１、第２の空調ユニットのバルブから通知された開度値を基に前記第１、第２の空調ユニットを通過する熱媒の流量を前記構成単位に属する第１、第２の空調ユニット毎に算出する流量算出手段と、前記往き熱媒温度の計測値と第１、第２の空調ユニットのバルブから通知された還り熱媒温度計測値で決まる熱媒の往還温度差と、前記流量算出手段が算出した流量算出値とを基に、第１、第２の空調ユニットの消費熱量を前記構成単位に属する第１、第２の空調ユニット毎に算出する消費熱量算出手段と、前記計量器から通知された消費熱量計測値を、前記消費熱量算出手段が算出した消費熱量算出値に応じて各第１、第２の空調ユニットに按分した消費熱量按分値を前記構成単位に属する第１、第２の空調ユニット毎に算出する消費熱量按分値算出手段と、前記構成単位に属する第１の空調ユニットのうち空調料金の請求先に属する第１の空調ユニットの消費熱量按分値の合計値を当該請求先の消費熱量按分値として請求先毎に算出する請求先消費熱量按分値算出手段と、この請求先消費熱量按分値算出手段が算出した消費熱量按分値を基に請求金額を請求先毎に算出すると共に、前記第２の空調ユニットの消費熱量按分値を基に前記第２の空調ユニットの料金を算出し、この料金を各請求先の床面積比率に応じて按分した按分料金を請求先毎に算出して、これら按分料金をそれぞれ対応する請求先毎の前記請求金額に加える請求金額算出手段とを備えることを特徴とするものである。 The present invention relates to a heat medium system for circulating a heat medium between a heat source and an air conditioning unit, a plurality of first air conditioning units for sending cooled or heated air to the air conditioning area, and cooled or heated outside air. An air conditioning charging system for calculating a plurality of air conditioning charges of a plurality of billing destinations in an air conditioning system in which a second air conditioning unit to be sent to a first air conditioning unit is disposed and a plurality of billing destinations exist in the heat medium system. A heat transfer medium piping that supplies the heat transfer medium to at least a part of the air conditioning units installed in the heat transfer medium system, and the first and second air conditioning units that receive the supply of the heat transfer medium from the heat transfer medium transfer piping. As a constituent unit, a meter for measuring the heat consumption of the constituent unit and the temperature of the heat transfer medium supplied from the heat source, and the opening degree notified from the valves of the first and second air conditioning units belonging to the constituent unit. Flow rate calculating means for calculating, for each of the first and second air conditioning units belonging to the constituent unit, the flow rate of the heat medium passing through the first and second air conditioning units on the basis of And the first, second, and third air conditioning units based on the difference between the temperature of the heat transfer medium determined by the measured temperature of the returning heat medium notified from the valves of the first and second air conditioning units and the flow rate calculation value calculated by the flow rate calculation means. Heat consumption calculation means for calculating heat consumption of the first and second air conditioning units belonging to the constituent unit and heat consumption measurement value notified from the measuring device by the heat consumption calculation means for calculating the heat consumption of the second air conditioning unit; Consumed heat amount distribution calculation means for calculating the consumed heat distribution value distributed to each of the first and second air conditioning units according to the calculated consumed heat calculation value for each of the first and second air conditioning units belonging to the structural unit , A first air conditioning unit belonging to the constituent unit Billing heat consumption division value calculation means for calculating the sum of the heat consumption distribution value of the first air conditioning unit belonging to the air conditioning charge billing destination among the units as the billing heat consumption distribution value for each billing destination, The billed amount is calculated for each billed destination based on the consumed heat amount division value calculated by the claim heat consumption amount calculating means, and the second air conditioning unit is calculated based on the consumed heat amount division value of the second air conditioning unit. The charge amount is calculated, and a distribution charge obtained by dividing this charge according to the floor area ratio of each charge destination is calculated for each charge destination, and the charge amount to be added to the charge amount for each corresponding charge destination And calculating means.

また、本発明は、熱源と空調ユニットとの間で熱媒を循環させるための熱媒系統に、冷却または加熱した空気を空調エリアに送る複数の第１の空調ユニットと、冷却または加熱した外気を前記第１の空調ユニットに送る第２の空調ユニットとが配置され、その熱媒系統に複数の請求先が存在する空調システムにおいて、複数の請求先の空調料金を算出する空調課金方法であって、前記熱媒系統に設置された空調ユニットのうちの少なくとも一部に熱媒を供給する熱媒往き配管とこの熱媒往き配管から熱媒の供給を受ける前記第１、第２の空調ユニットとを構成単位として、この構成単位について消費熱量と熱源から供給される往き熱媒の温度とを計測する計測ステップと、前記構成単位に属する第１、第２の空調ユニットのバルブから通知された開度値を基に前記第１、第２の空調ユニットを通過する熱媒の流量を前記構成単位に属する第１、第２の空調ユニット毎に算出する流量算出ステップと、前記往き熱媒温度の計測値と第１、第２の空調ユニットのバルブから通知された還り熱媒温度計測値で決まる熱媒の往還温度差と、前記流量算出ステップで算出した流量算出値とを基に、第１、第２の空調ユニットの消費熱量を前記構成単位に属する第１、第２の空調ユニット毎に算出する消費熱量算出ステップと、前記計測ステップで計測した消費熱量計測値を、前記消費熱量算出ステップで算出した消費熱量算出値に応じて各第１、第２の空調ユニットに按分した消費熱量按分値を前記構成単位に属する第１、第２の空調ユニット毎に算出する消費熱量按分値算出ステップと、前記構成単位に属する第１の空調ユニットのうち空調料金の請求先に属する第１の空調ユニットの消費熱量按分値の合計値を当該請求先の消費熱量按分値として請求先毎に算出する請求先消費熱量按分値算出ステップと、この請求先消費熱量按分値算出ステップで算出した消費熱量按分値を基に請求金額を請求先毎に算出すると共に、前記第２の空調ユニットの消費熱量按分値を基に前記第２の空調ユニットの料金を算出し、この料金を各請求先の床面積比率に応じて按分した按分料金を請求先毎に算出して、これら按分料金をそれぞれ対応する請求先毎の前記請求金額に加える請求金額算出ステップとを含むことを特徴とするものである。 Further, according to the present invention, a heat medium system for circulating a heat medium between a heat source and an air conditioning unit, a plurality of first air conditioning units for sending cooled or heated air to the air conditioning area, and cooled or heated outside air And a second air conditioning unit that sends the first air conditioning unit to the first air conditioning unit, and in the air conditioning system in which a plurality of billing destinations exist in the heat medium system, a plurality of billing destination air conditioning charges. Heat transfer piping for supplying the heat transfer medium to at least a part of the air conditioning units installed in the heat transfer medium system, and the first and second air conditioning units receiving supply of the heat transfer medium from the heat transfer medium transfer piping. And a measuring step of measuring the heat consumption of the constituent unit and the temperature of the heat transfer medium supplied from the heat source, and notifying from the valves of the first and second air conditioning units belonging to the constituent unit. Calculating the flow rate of the heat medium passing through the first and second air conditioning units for each of the first and second air conditioning units belonging to the constituent unit based on the opening value, and the forward heat medium Based on the difference between the measured temperature value and the return temperature difference of the heat medium determined by the returned heat medium temperature measurement value notified from the valves of the first and second air conditioning units, and the flow rate calculation value calculated in the flow rate calculation step A heat consumption calculation step of calculating heat consumption of the first and second air conditioning units for each of the first and second air conditioning units belonging to the constituent unit, and a heat consumption measurement value measured in the measurement step; Consumed heat amount distribution value calculated for each of the first and second air conditioning units belonging to the structural unit, the consumed heat distribution value distributed to each of the first and second air conditioning units according to the consumed heat value calculated in the calculation step Calculation step and before The total value of the heat consumption apportionment value of the first air conditioning unit belonging to the billing destination of the air conditioning charge among the first air conditioning units belonging to the structural unit is calculated as the consumption heat consumption apportionment value for each billing destination The billed amount is calculated for each billing destination on the basis of the heat consumption amount calculation step and the heat consumption amount calculation step calculated in the claim heat consumption amount calculation step, and the heat consumption amount calculation of the second air conditioning unit is The charge of the second air conditioning unit is calculated according to the floor area ratio of the respective billing destinations, and the proportional sharing fee is computed for each billing destination, and these proportional fees are respectively calculated for the respective billing destinations. And a billing amount calculating step to be added to the billing amount.

本発明によれば、熱媒系統に設置された複数の空調ユニットのうちの少なくとも一部に熱媒を供給する熱媒往き配管とこの熱媒往き配管から熱媒の供給を受ける複数の空調ユニットとを構成単位として、この構成単位について計量器で消費熱量を計測し、空調ユニットのバルブの開度値を基に空調ユニットを通過する熱媒の流量を算出し、熱媒の往還温度差と流量算出値とを基に空調ユニットの消費熱量を算出し、計量器から通知された消費熱量計測値を、消費熱量算出値に応じて各空調ユニットに按分した消費熱量按分値を空調ユニット毎に算出し、空調料金の請求先に属する空調ユニットの消費熱量按分値の合計値を請求先の消費熱量按分値として算出し、この消費熱量按分値を基に請求先への請求金額を算出するようにしたので、１つの熱媒系統に複数の空調ユニットが配置され、且つその熱媒系統に複数の請求先が存在する場合においても、空調ユニット毎に計量器を設置することなく複数の請求先の空調料金を、公平で透明性が高く且つ低コストで高精度な方法で算出することができる。 According to the present invention, the heat medium receiving pipe for supplying the heat medium to at least a part of the plurality of air conditioning units installed in the heat medium system, and the plurality of air conditioning units for receiving the heat medium supplied from the heat medium receiving pipe. And the amount of heat consumed by the meter for this constituent unit, and based on the opening value of the valve of the air conditioning unit, the flow rate of the heat medium passing through the air conditioning unit is calculated. The heat consumption of the air conditioning unit is calculated based on the flow rate calculation value, and the heat consumption distribution value obtained by distributing the heat consumption measurement value notified from the measuring device to each air conditioning unit according to the heat consumption calculation value is calculated for each air conditioning unit Calculate the sum of the heat consumption apportionment value of the air conditioning unit belonging to the air conditioning charge billing destination as the billing heat consumption apportionment value, and calculate the billed amount to the billing destination based on the heat consumption calorie apportionment value So I made one Even when a plurality of air conditioning units are disposed in the heat medium system, and there are multiple billing destinations in the heat medium system, the plurality of air conditioning charges for the multiple billing destinations can be made fair without installing a weighing unit for each air conditioning unit. Can be calculated by a highly accurate and low cost method.

また、本発明では、圧力調整用バルブを制御して、構成単位に属する複数の空調ユニットのバルブにかかる差圧を一定範囲に抑えることにより、流量算出値の誤差を最小にすることができる。 Further, in the present invention, the pressure adjustment valve can be controlled to suppress the differential pressure applied to the valves of the plurality of air conditioning units belonging to the constituent unit to a certain range, thereby minimizing the error of the flow rate calculation value.

本発明の実施の形態に係る空調システムの構成を示すブロック図である。It is a block diagram showing composition of an air-conditioning system concerning an embodiment of the invention. 本発明の実施の形態に係る空調課金装置の構成を示すブロック図である。It is a block diagram which shows the structure of the air-conditioning charge apparatus which concerns on embodiment of this invention. 本発明の実施の形態に係る空調課金システムの動作を説明するフローチャートである。It is a flowchart explaining operation | movement of the air-conditioning charge system which concerns on embodiment of this invention. バルブ開度とバルブを通過する流量との関係の１例を示す図である。It is a figure which shows one example of the relationship between valve-opening degree and the flow volume which passes a valve | bulb. セントラルシステムの課金方式を説明する図である。It is a figure explaining the fee-charging system of a central system. 従量課金方式を説明する図である。It is a figure explaining a pay-as-you-go system. ビル用マルチ方式の課金方式を説明する図である。It is a figure explaining the billing system of the multi scheme for buildings.

以下、本発明の実施の形態について図面を参照して説明する。図１は本発明の実施の形態に係る空調システムの構成を示すブロック図である。空調システムは、熱媒（冷水または温水）を供給する熱源１と、複数の空調ユニットであるＦＣＵ２−１〜２−３と、同じく空調ユニットである外調機３と、ＦＣＵ２−１〜２−３および外調機３が属する構成単位の消費熱量と熱源１から供給される往き熱媒の温度とを計測する計量器４と、ＦＣＵ２−１〜２−３のバルブ６−１〜６−３および外調機３のバルブ７にかかる差圧を一定範囲に抑えて、バルブ６−１〜６−３，７に過剰な差圧がかからないように調整する圧力調整用バルブ５と、バルブ６−１〜６−３，７を制御するコントローラ８と、複数の請求先の空調料金を算出する空調課金装置９とから構成される。図１の空調システムにおいて、計量器４と圧力調整用バルブ５と空調課金装置９とは、空調課金システムを構成している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an air conditioning system according to an embodiment of the present invention. The air conditioning system includes a heat source 1 for supplying a heat medium (cold water or hot water), a plurality of air conditioning units FCU2-1 to 2-3, an external air conditioner 3, which is also an air conditioning unit, and FCU2-1 to 2- 3 and a meter 4 for measuring the heat consumption of the structural unit to which the external air conditioner 3 belongs and the temperature of the heat transfer medium supplied from the heat source 1, and the valves 6-1 to 6-3 of the FCUs 2-1 to 2-3 And the pressure adjusting valve 5 for adjusting the pressure difference applied to the valve 7 of the external air conditioner 3 so as not to apply an excessive pressure difference to the valves 6-1 to 6-3, It comprises a controller 8 for controlling 1 to 6-3 and 7 and an air conditioning charging device 9 for calculating a plurality of air conditioning charges for billing destinations. In the air conditioning system of FIG. 1, the weighing unit 4, the pressure control valve 5 and the air conditioning charging device 9 constitute an air conditioning charging system.

図２は空調課金装置９の構成を示すブロック図である。空調課金装置９は、熱量取得部９０と、往き熱媒温度取得部９１と、バルブ開度取得部９２と、還り熱媒温度取得部９３と、流量算出部９４と、消費熱量算出部９５と、消費熱量按分値算出部９６と、請求先消費熱量按分値算出部９７と、請求金額算出部９８と、圧力調整用バルブ調整部９９とから構成される。 FIG. 2 is a block diagram showing the configuration of the air conditioning charging device 9. The air conditioning charging device 9 includes a heat quantity acquisition unit 90, a forward heat medium temperature acquisition unit 91, a valve opening degree acquisition unit 92, a return heat medium temperature acquisition unit 93, a flow rate calculation unit 94, and a heat consumption calculation unit 95. And a heat consumption amount calculation unit 97, a charge amount calculation unit 97, a charge amount calculation unit 98, and a pressure adjustment valve adjustment unit 99.

本実施の形態では、空調エリアが１０−１，１０−２の２つに分かれ、各空調エリア１０−１，１０−２に１台乃至は複数台の空調ユニットが設置されている例で説明する。図１の例では、空調エリア１０−１用の空調ユニットとしてＦＣＵ２−１，２−２が設置され、空調エリア１０−２用の空調ユニットとしてＦＣＵ２−３が設置され、さらに外気を冷却または加熱して空調エリア１０−１，１０−２に供給する空調ユニットとして外調機３が設置されている。ここでは、１つの空調エリアに１つのテナント（事業者）が入居しているものとする。このテナントが空調料金の請求先となる。 In the present embodiment, the air conditioning area is divided into two 10-1 and 10-2, and one or a plurality of air conditioning units are installed in each of the air conditioning areas 10-1 and 10-2. Do. In the example of FIG. 1, FCU2-1 and 2-2 are installed as an air conditioning unit for the air conditioning area 10-1, FCU2-3 is installed as an air conditioning unit for the air conditioning area 10-2, and the outside air is further cooled or heated. The external air conditioner 3 is installed as an air conditioning unit to supply the air conditioning areas 10-1 and 10-2. Here, it is assumed that one tenant (enterprise) is moving into one air conditioning area. This tenant is the billing destination of the air conditioning charge.

熱源１から供給される熱媒（冷水または温水）は、熱媒往き配管１１を経てＦＣＵ２−１〜２−３および外調機３に送られ、ＦＣＵ２−１〜２−３および外調機３を通過して熱媒還り配管１２により熱源１に戻される。ＦＣＵ２−１〜２−３は、空調エリア１０−１，１０−２からＦＣＵ２−１〜２−３に戻る空気（還気）と熱媒との熱交換、または混合気（還気と外調機３から供給される外気とを混合した空気）と熱媒との熱交換を行って、冷却または加熱した空気（給気）を空調エリア１０−１，１０−２に送る。外調機３は、外気と熱媒との熱交換を行って、冷却または加熱した外気をＦＣＵ２−１〜２−３に送る。 The heat medium (cold water or hot water) supplied from the heat source 1 is sent to the FCU 2-1 to 2-3 and the external air conditioner 3 through the heat medium receiving pipe 11, and the FCU 2-1 to 2-3 and the external air conditioner 3 And is returned to the heat source 1 by the heat medium return pipe 12. FCU2-1 to 2-3 heat exchange between air (return air) returning to the FCU 2-1 to 2-3 from the air conditioning areas 10-1 and 10-2 and the heat medium, or mixture of air (return air and external air conditioning Heat exchange between air mixed with the outside air supplied from the machine 3 and the heat medium is performed, and the cooled or heated air (air supply) is sent to the air conditioning areas 10-1 and 10-2. The external cooler 3 exchanges heat between the outside air and the heat medium, and sends the cooled or heated outside air to the FCU 2-1 to 2-3.

ＦＣＵ２−１〜２−３を通過する熱媒の流量はバルブ６−１〜６−３によって制御され、外調機３を通過する熱媒の流量はバルブ７によって制御される。バルブ６−１〜６−３は、それぞれＦＣＵ２−１〜２−３を通過して熱源１に戻る還り熱媒の温度を計測する機能と、還り熱媒温度計測値と自身の開度値とを空調課金装置９に通知する機能とを有している。同様に、バルブ７は、外調機３を通過して熱源１に戻る還り熱媒の温度を計測する機能と、還り熱媒温度計測値と自身の開度値とを空調課金装置９に通知する機能とを有している。 The flow rate of the heat medium passing through the FCU 2-1 to 2-3 is controlled by the valves 6-1 to 6-3, and the flow rate of the heat medium passing through the external air conditioner 3 is controlled by the valve 7. The valves 6-1 to 6-3 each have a function of measuring the temperature of the returning heat medium which passes through the FCU 2-1 to 2-3 and returns to the heat source 1, and the measured temperature of the returning heat medium and its own opening degree value And the function of notifying the air-conditioning charging device 9. Similarly, the valve 7 notifies the air conditioning charging device 9 of the function of measuring the temperature of the returning heat medium that passes through the external air conditioner 3 and returns to the heat source 1, the returned heat medium temperature measurement value and its own opening value. Have a function to

空調エリア１０−１，１０−２には、それぞれ空調エリア１０−１，１０−２の室内温度を計測する室内温度センサ（不図示）が設けられている。コントローラ８は、空調エリア１０−１の室内温度と室内温度設定値とが一致するようにＦＣＵ２−１，２−２のバルブ６−１，６−２の開度を制御し、空調エリア１０−２の室内温度と室内温度設定値とが一致するようにＦＣＵ２−３のバルブ６−３の開度を制御する。また、コントローラ８は、外気を一定レベルまで冷却または加熱できるように外調機３のバルブ７の開度を制御する。以上のような空調システムとしての動作は従来と同様である。 In the air conditioning areas 10-1 and 10-2, indoor temperature sensors (not shown) for measuring the room temperatures of the air conditioning areas 10-1 and 10-2, respectively, are provided. The controller 8 controls the opening degree of the valves 6-1 and 6-2 of the FCU 2-1 and 2-2 so that the room temperature of the air conditioning area 10-1 matches the room temperature set value, and the air conditioning area 10- The opening degree of the valve 6-3 of the FCU 2-3 is controlled so that the room temperature 2 and the room temperature set value coincide with each other. Further, the controller 8 controls the opening degree of the valve 7 of the external air conditioner 3 so that the outside air can be cooled or heated to a predetermined level. The operation of the air conditioning system as described above is the same as that of the prior art.

次に、本実施の形態の空調課金システムの動作を図３を参照して説明する。図１には、熱源１とＦＣＵ２−１〜２−３および外調機３との間で熱媒を循環させるための熱媒系統が記載されているが、この熱媒系統には複数の構成単位が接続されている場合がある。ここで、構成単位とは、熱媒系統に設置された複数の空調ユニットのうちの少なくとも一部に熱媒を供給する熱媒往き配管１１とこの熱媒往き配管１１から熱媒の供給を受ける複数の空調ユニットのことを言う。計量器４は、構成単位毎に設けられる。図１の例は、熱媒系統に構成単位が１つのみ設けられた例であるが、例えばビルの各フロアがそれぞれ構成単位の場合には、１つのフロアに熱媒を供給する熱媒往き配管毎に計量器４が設けられることになる。 Next, the operation of the air conditioning charging system of the present embodiment will be described with reference to FIG. Although a heat medium system for circulating a heat medium between the heat source 1 and the FCU 2-1 to 2-3 and the external air conditioner 3 is described in FIG. 1, the heat medium system has a plurality of configurations. Units may be connected. Here, the structural unit refers to the heat medium delivery pipe 11 for supplying the heat medium to at least a part of the plurality of air conditioning units installed in the heat medium system and the supply of the heat medium from the heat medium delivery pipe 11 It refers to multiple air conditioning units. The measuring instrument 4 is provided for each constituent unit. Although the example of FIG. 1 is an example in which only one structural unit is provided in the heat medium system, for example, in the case where each floor of the building is a structural unit, the heat medium to be supplied with the heat medium is supplied to one floor. The measuring device 4 is provided for each pipe.

計量器４は、構成単位の消費熱量Ｑｍを計測する機能と、熱源１から構成単位のＦＣＵ２−１〜２−３および外調機３に供給される往き熱媒の温度ＴＡを計測する機能と、計量器４を通過して熱源１に戻る還り熱媒の温度ＴＢを計測する機能と、計量器４を通過する熱媒の流量Ｆを計測する機能と、消費熱量計測値Ｑｍと往き熱媒温度計測値ＴＡとを空調課金装置９に通知する機能とを有している。計量器４は、往き熱媒温度計測値ＴＡと還り熱媒温度計測値ＴＢと流量計測値Ｆと熱量換算係数αとから次式のように構成単位の消費熱量Ｑｍを算出する。
Ｑｍ＝｜ＴＡ−ＴＢ｜×Ｆ×α ・・・（１） The measuring instrument 4 has a function of measuring the heat consumption Qm of the constituent unit and a function of measuring the temperature TA of the forward heat medium supplied from the heat source 1 to the FCUs 2-1 to 2-3 and the external air conditioner 3 The function of measuring the temperature TB of the heat transfer medium returned to the heat source 1 after passing through the measuring unit 4, the function of measuring the flow rate F of the heat medium passing through the measuring unit 4, and the heat consumption measurement value Qm It has a function of notifying the air conditioning charging device 9 of the temperature measurement value TA. The measuring instrument 4 calculates the consumption heat quantity Qm of the structural unit from the forward heat medium temperature measurement value TA, the return heat medium temperature measurement value TB, the flow rate measurement value F, and the heat quantity conversion coefficient α as in the following equation.
Qm = | TA−TB | × F × α (1)

熱量換算係数αは、往き熱媒温度計測値ＴＡと還り熱媒温度計測値ＴＢとから決まる値である。計量器４は、往き熱媒温度計測値ＴＡおよび還り熱媒温度計測値ＴＢと、熱量換算係数αとの関係を予め記憶している。計量器４は、式（１）により求めた値を消費熱量計測値Ｑｍとして空調課金装置９に通知する。 The heat quantity conversion coefficient α is a value determined from the forward heat transfer medium temperature measurement value TA and the return heat transfer medium temperature measurement value TB. The measuring device 4 stores in advance the relationship between the forward heat transfer medium temperature measurement value TA and the return heat transfer medium temperature measurement value TB, and the heat quantity conversion coefficient α. The measuring instrument 4 notifies the air conditioning charging device 9 of the value obtained by the equation (1) as the consumed heat measurement value Qm.

空調課金装置９の熱量取得部９０は、計量器４から通知される消費熱量計測値Ｑｍを取得する（図３ステップＳ１）。
空調課金装置９の往き熱媒温度取得部９１は、計量器４から通知される往き熱媒温度計測値ＴＡを取得する（図３ステップＳ２）。 The heat amount acquisition unit 90 of the air conditioning charging device 9 acquires the consumed heat measurement value Qm notified from the measuring instrument 4 (step S1 in FIG. 3).
The forward heat transfer medium temperature acquisition unit 91 of the air conditioning charging device 9 acquires the forward heat transfer medium temperature measurement value TA notified from the measuring instrument 4 (step S2 in FIG. 3).

空調課金装置９のバルブ開度取得部９２は、各バルブ６−１〜６−３，７から通知される開度値を取得する（図３ステップＳ３）。
空調課金装置９の還り熱媒温度取得部９３は、各バルブ６−１〜６−３，７から通知される還り熱媒温度計測値を取得する（図３ステップＳ４）。 The valve opening degree acquisition unit 92 of the air conditioning charging device 9 acquires the opening degree value notified from each of the valves 6-1 to 6-3, 7 (step S3 in FIG. 3).
The heat return medium temperature acquisition unit 93 of the air conditioning charging device 9 acquires a heat return medium temperature measurement value notified from each of the valves 6-1 to 6-3 (step S4 in FIG. 3).

空調課金装置９の流量算出部９４は、各バルブ６−１〜６−３，７から通知された開度値を基に、空調ユニットを通過する熱媒の流量を構成単位に属する空調ユニット毎に算出する（図３ステップＳ５）。図４に示すようにバルブ開度とバルブを通過する流体の流量との間には既知の関係がある。流量算出部９４は、図４のような関係を表すテーブルをバルブ毎（空調ユニット毎）に予め記憶している。そして、流量算出部９４は、ＦＣＵ２−１を通過する熱媒の流量を求める場合、このＦＣＵ２−１のバルブ６−１に対応するテーブルを参照し、このテーブルからバルブ６−１の開度値に対応する流量値を取得する。他のＦＣＵ２−１，２−２や外調機３についても、バルブ６−１，６−２，７の開度値を基に流量値を求めることができる。こうして、流量算出部９４は、空調ユニットを通過する熱媒の流量を構成単位に属する空調ユニット毎に算出する。なお、図４に示した既知の関係が成立するのは、後述のようにバルブ６−１〜６−３，７にかかる差圧が一定範囲に抑えられている場合である。 The flow rate calculation unit 94 of the air conditioning charging device 9 sets the flow rate of the heat medium passing through the air conditioning unit to each air conditioning unit as a constituent unit based on the opening degree value notified from each of the valves 6-1 to 6-3. To calculate (step S5 in FIG. 3). There is a known relationship between the valve opening and the flow rate of fluid passing through the valve, as shown in FIG. The flow rate calculation unit 94 stores in advance a table representing the relationship as shown in FIG. 4 for each valve (for each air conditioning unit). Then, when the flow rate calculation unit 94 obtains the flow rate of the heat medium passing through the FCU 2-1, the flow rate calculation unit 94 refers to the table corresponding to the valve 6-1 of the FCU 2-1, and the opening degree value of the valve 6-1 from this table. Get the corresponding flow value. The flow rate values of the other FCUs 2-1 and 2-2 and the external air conditioner 3 can also be determined based on the opening degree values of the valves 6-1, 6-2, and 7. Thus, the flow rate calculation unit 94 calculates the flow rate of the heat medium passing through the air conditioning unit for each air conditioning unit belonging to the constituent unit. The known relationship shown in FIG. 4 is established when the differential pressure applied to the valves 6-1 to 6-3 is suppressed within a certain range as described later.

続いて、空調課金装置９の消費熱量算出部９５は、空調ユニットにおける熱媒の往還温度差と、当該空調ユニットを通過する熱媒の流量とを基に、空調ユニットの消費熱量を構成単位に属する空調ユニット毎に算出する（図３ステップＳ６）。計量器４から通知された往き熱媒温度計測値をＴＡ、バルブ６−１から通知された還り熱媒温度計測値をＴＢ１とすると、ＦＣＵ２−１における熱媒の往還温度差ＴＤは、次式のようになる。
ＴＤ＝｜ＴＡ−ＴＢ１｜・・・（２） Subsequently, the consumed heat amount calculation unit 95 of the air conditioning charging device 9 uses the consumed heat amount of the air conditioning unit as a constituent unit based on the temperature difference of the heat medium in the air conditioning unit and the flow rate of the heat medium passing through the air conditioning unit. It is calculated for each air conditioning unit to which it belongs (step S6 in FIG. 3). Assuming that the forward heat medium temperature measurement value notified from the measuring instrument 4 is TA, and the returned heat medium temperature measurement value notified from the valve 6-1 is TB1, the heat transfer medium temperature difference TD in FCU 2-1 is expressed by the following equation become that way.
TD = | TA-TB1 | (2)

流量算出部９４がＦＣＵ２−１について算出した熱媒の流量算出値をＦ１とすると、ＦＣＵ２−１の消費熱量Ｑｃ１は次式のようになる。
Ｑｃ１＝ＴＤ×Ｆ１×β ・・・（３）
熱量換算係数βは、往き熱媒温度計測値ＴＡと還り熱媒温度計測値ＴＢ１とから決まる値である。消費熱量算出部９５は、往き熱媒温度計測値および還り熱媒温度計測値と、熱量換算係数βとの関係を予め記憶している。他のＦＣＵ２−１，２−２や外調機３についても、同様に消費熱量を求めることができる。こうして、消費熱量算出部９５は、空調ユニットの消費熱量を構成単位に属する空調ユニット毎に算出する。 Assuming that the flow rate calculation value of the heat medium calculated by the flow rate calculation unit 94 for FCU 2-1 is F1, the heat consumption Qc1 of FCU 2-1 is expressed by the following equation.
Qc1 = TD × F1 × β (3)
The heat quantity conversion coefficient β is a value determined from the forward heat transfer medium temperature measurement value TA and the return heat transfer medium temperature measurement value TB1. The heat consumption calculation unit 95 stores in advance the relationship between the forward heat transfer medium temperature measurement value and the return heat transfer medium temperature measurement value, and the heat transfer conversion coefficient β. The heat consumption can be similarly determined for the other FCUs 2-1 and 2-2 and the external air conditioner 3. Thus, the heat consumption calculation unit 95 calculates the heat consumption of the air conditioning unit for each air conditioning unit belonging to the constituent unit.

次に、空調課金装置９の消費熱量按分値算出部９６は、計量器４から通知された消費熱量計測値Ｑｍを、消費熱量算出部９５が算出した消費熱量算出値に応じて各空調ユニットに按分（分配）した消費熱量按分値を構成単位に属する空調ユニット毎に算出する（図３ステップＳ７）。消費熱量算出部９５がＦＣＵ２−１について算出した消費熱量算出値をＱｃ１、ＦＣＵ２−２について算出した消費熱量算出値をＱｃ２、ＦＣＵ２−３について算出した消費熱量算出値をＱｃ３、外調機３について算出した消費熱量算出値をＱｃ４とすると、消費熱量算出部９５が算出した各空調ユニットの消費熱量算出値の合計値ΣＱｃは次式のようになる。
ΣＱｃ＝Ｑｃ１＋Ｑｃ２＋Ｑｃ３＋Ｑｃ４・・・（４） Next, the heat consumption apportionment value calculation unit 96 of the air conditioning charging device 9 adds the heat consumption measurement value Qm notified from the measuring instrument 4 to each air conditioning unit according to the heat consumption calculation value calculated by the heat consumption calculation unit 95. The apportioned (distributed) consumed heat distribution value is calculated for each air conditioning unit belonging to the constituent unit (step S7 in FIG. 3). Qc1, the heat consumption calculation value calculated for the FCU2-2, the heat consumption calculation value calculated for the FCU2-1, the heat consumption calculation value calculated for the FCU2-1, the heat consumption calculation value calculated for the FCU2-1: Qc3, external unit 3 Assuming that the calculated consumed heat calculation value is Qc4, the total value QQc of the consumed heat calculation values of the air conditioning units calculated by the consumed heat calculation unit 95 is expressed by the following equation.
Σ Q c = Q c 1 + Q c 2 + Q c 3 + Q c 4 (4)

消費熱量按分値算出部９６は、各空調ユニットの消費熱量算出値の合計値ΣＱｃに対するＦＣＵ２−１の消費熱量算出値Ｑｃ１の割合Ｑｃ１／ΣＱｃから、当該ＦＣＵ２−１の消費熱量按分値Ｑｄ１を次式のように算出する。
Ｑｄ１＝Ｑｍ×（Ｑｃ１／ΣＱｃ）・・・（５）
他のＦＣＵ２−１，２−２や外調機３についても、同様に消費熱量按分値を求めることができる。こうして、消費熱量按分値算出部９６は、消費熱量按分値を構成単位に属する空調ユニット毎に算出する。 The heat consumption distribution value calculation unit 96 follows the heat consumption distribution value Qd1 of the FCU2-1 from the ratio Qc1 / ΣQc of the heat consumption calculation value Qc1 of the FCU2-1 to the total value QQc of the heat consumption calculation values of each air conditioning unit. Calculate as the formula.
Qd1 = Qm × (Qc1 / ΣQc) (5)
The heat consumption ratio value can be similarly calculated for the other FCUs 2-1 and 2-2 and the external air conditioner 3. Thus, the heat consumption amount calculation unit 96 calculates the heat consumption distribution value for each air conditioning unit belonging to the constituent unit.

空調課金装置９の請求先消費熱量按分値算出部９７は、構成単位に属する空調ユニットのうち空調料金の請求先（テナント）に属する空調ユニットの消費熱量按分値の合計値を当該請求先の消費熱量按分値として請求先毎に算出する（図３ステップＳ８）。図１の例では、空調エリア１０−１にＦＣＵ２−１，２−２が設置されているので、この空調エリア１０−１に入居している請求先の消費熱量按分値Ｑｔ１は、消費熱量按分値算出部９６がＦＣＵ２−１について算出した消費熱量按分値をＱｄ１、ＦＣＵ２−２について算出した消費熱量按分値をＱｄ２とすると、次式のようになる。
Ｑｔ１＝Ｑｄ１＋Ｑｄ２・・・（６） The billing heat consumption apportionment value calculation unit 97 of the air conditioning charging device 9 calculates the sum of the consumption heat apportionment value of the air conditioning units belonging to the air conditioning charge billing destination (tenant) among the air conditioning units belonging to the configuration unit. It is calculated for each billing destination as the heat quantity distribution value (step S8 in FIG. 3). In the example of FIG. 1, since FCU2-1 and 2-2 are installed in the air conditioning area 10-1, the heat consumption apportionment value Qt1 of the billing destination in the air conditioning area 10-1 is the heat consumption apportionment Assuming that the consumed heat amount distribution value calculated for the FCU 2-1 by the value calculation unit 96 is Qd1 and the consumed heat amount distribution value calculated for the FCU 2-2 is Qd2, the following equation is obtained.
Qt1 = Qd1 + Qd2 (6)

また、空調エリア１０−２にＦＣＵ２−３が設置されているので、この空調エリア１０−２に入居している請求先の消費熱量按分値Ｑｔ２は、消費熱量按分値算出部９６がＦＣＵ２−３について算出した消費熱量按分値をＱｄ３とすると、Ｑｔ２＝Ｑｄ３となる。こうして、請求先消費熱量按分値算出部９７は、消費熱量按分値を請求先毎に算出する。 Further, since the FCU 2-3 is installed in the air conditioning area 10-2, the heat consumption apportionment value calculation unit 96 calculates the FCU 2-3 of the heat consumption apportionment value billed in the air conditioning area 10-2. Assuming that the consumed heat amount division value calculated for the above is Qd3, Qt2 = Qd3. In this way, the billing heat consumption division value calculation unit 97 calculates the heat consumption division value for each billing destination.

最後に、空調課金装置９の請求金額算出部９８は、請求先の消費熱量按分値［Ｊ］に熱量単価［円／Ｊ］を乗じて請求先への請求金額を算出する（図３ステップＳ９）。空調エリア１０−１に入居している請求先の消費熱量按分値をＱｔ１［Ｊ］、熱量単価をＵＰ［円／Ｊ］とすれば、当該請求先への請求金額Ｍは次式のようになる。
Ｍ＝Ｑｔ１×ＵＰ・・・（７）
他の空調エリア１０−２に入居している請求先についても、同様に請求金額を求めることができる。こうして、請求金額算出部９８は、請求金額を請求先毎に算出する。 Finally, the billing amount calculation unit 98 of the air conditioning billing device 9 calculates the billing amount to the billing destination by multiplying the thermal energy distribution value [J] of the billing destination by the thermal energy unit price [yen / J] (FIG. 3, step S9). ). Assuming that Qt1 [J] is the amount of heat consumption divided by the billing destination moving in the air conditioning area 10-1, and the unit price of heat is UP [yen / J], the billing amount M for the billing destination is expressed by the following equation. Become.
M = Qt1 × UP (7)
The billing amount can be similarly obtained for the billing address in the other air conditioning area 10-2. Thus, the billing amount calculation unit 98 calculates the billing amount for each billing destination.

計量器４および空調課金装置９は上記の動作を一定時間毎に行うので、一ヶ月の請求金額を算出する場合には、請求金額算出部９８が算出した請求金額を請求先毎に積算して一ヶ月分の請求金額を算出することになる。 Since the measuring instrument 4 and the air conditioning charging device 9 perform the above operation every fixed time, when calculating the billing amount for one month, the billing amount calculated by the billing amount calculation unit 98 is accumulated for each billing destination. It will calculate the billed amount for one month.

こうして、本実施の形態では、１つの熱媒系統に複数の空調ユニットが配置され、且つその熱媒系統に複数の請求先が存在する場合においても、空調ユニット毎に計量器を設置することなく複数の請求先の空調料金を、公平で透明性が高く且つ低コストで高精度な方法で算出することができる。 Thus, in the present embodiment, even when a plurality of air conditioning units are disposed in one heat medium system, and there are multiple billing destinations in the heat medium system, the meter is not installed for each air conditioning unit. A plurality of billing air conditioning charges can be calculated in a fair, highly transparent, low cost, high accuracy manner.

なお、ＦＣＵ２−１〜２−３のバルブ６−１〜６−３および外調機３のバルブ７に過剰な差圧（バルブの入口と出口の圧力差）がかかると、流量算出部９４が算出する流量算出値に誤差が生じる。そこで、空調課金装置９の圧力調整用バルブ調整部９９は、圧力調整用バルブ５を制御して、バルブ６−１〜６−３，７にかかる差圧を一定範囲に抑えるようにする。 If excessive differential pressure (pressure difference between the inlet and the outlet of the valve) is applied to the valves 6-1 to 6-3 of the FCU 2-1 to 2-3 and the valve 7 of the external air conditioner 3, the flow rate calculating unit 94 An error occurs in the calculated flow rate calculation value. Therefore, the pressure adjusting valve adjusting unit 99 of the air conditioning charging device 9 controls the pressure adjusting valve 5 so as to suppress the differential pressure applied to the valves 6-1 to 6-3, 7 within a predetermined range.

圧力調整用バルブ５は、圧力調整用バルブ５から出てくる熱媒圧力を計測しており、圧力調整用バルブ調整部９９は、圧力調整用バルブ５による圧力計測値が、圧力調整用バルブ５が設置されている高さと熱源１からの送水圧力と熱源１から送水されてくる熱媒の圧力損出などから演算される圧力設定値と等しくなるように、圧力調整用バルブ５の開度を調整することで、バルブ６−１〜６−３，７にかかる差圧を一定範囲に抑えるように制御する。また、圧力調整用バルブ５は、圧力調整用バルブ５の差圧を計測しており、圧力調整用バルブ調整部９９は、圧力調整用バルブ５による差圧計測値が、圧力調整用バルブ５が設置されている高さと熱源１からの送水圧力と熱源１から送水されてくる熱圧力損出などから演算される差圧設定値と等しくなるように、圧力調整用バルブ５の開度を調整するようにしてもよい。 The pressure control valve 5 measures the pressure of the heat medium coming out of the pressure control valve 5, and the pressure control valve control unit 99 measures the pressure measured by the pressure control valve 5. Of the pressure adjustment valve 5 to be equal to the pressure setting value calculated from the height at which the heat source is installed, the water supply pressure from the heat source 1, and the pressure loss of the heat medium supplied from the heat source 1 By adjusting, the differential pressure applied to the valves 6-1 to 6-3 is controlled so as to be within a certain range. Further, the pressure adjustment valve 5 measures the differential pressure of the pressure adjustment valve 5, and the pressure adjustment valve adjustment unit 99 is a pressure adjustment valve 5 in which the differential pressure measurement value by the pressure adjustment valve 5 is the pressure adjustment valve 5. Adjust the opening degree of the pressure adjustment valve 5 so as to be equal to the differential pressure set value calculated from the installed height, the water pressure from the heat source 1 and the thermal pressure loss sent from the heat source 1, etc. You may do so.

ただし、圧力調整用バルブ５と圧力調整用バルブ調整部９９は本発明において必須の構成要件ではない。リバースレターン方式や、２次ポンプＶＷＶ（Variable Water Volume）制御導入時は、バルブ６−１〜６−３，７に過剰な差圧がかかりにくいため、圧力調整用バルブ５と圧力調整用バルブ調整部９９が不要となることもある。 However, the pressure control valve 5 and the pressure control valve control unit 99 are not essential components of the present invention. When a reverse return system or secondary pump VWV (Variable Water Volume) control is introduced, it is difficult for excessive differential pressure to be applied to the valves 6-1 to 6-3, so adjusting the pressure adjustment valve 5 and the pressure adjustment valve Part 99 may be unnecessary.

また、上記の説明では外調機３の消費熱量については請求先への請求金額に含めていないが、上記と同様に按分値を算出して各請求先に割り当てる方法の他、共益費に含めてしまう方法なども考えられる。各請求先に割り当てる場合には、消費熱量按分値算出部９６は、各空調ユニットの消費熱量算出値の合計値ΣＱｃに対する外調機３の消費熱量算出値Ｑｃ４の割合Ｑｃ４／ΣＱｃから、当該外調機３の消費熱量按分値Ｑｄ４を次式のように算出する。
Ｑｄ４＝Ｑｍ×（Ｑｃ４／ΣＱｃ）・・・（８） In the above description, the amount of heat consumed by the external air conditioner 3 is not included in the amount billed to the billing destination, but it is included in common benefit expenses other than the method of calculating the apportionment value and allocating to each billing destination as described above. It is possible to think of ways to In the case of allocating to each claim, the heat consumption apportionment value calculation unit 96 excludes the ratio Qc4 / ΣQc of the heat consumption calculation value Qc4 of the external air conditioner 3 to the total value QQc of the heat consumption calculation value of each air conditioning unit. The consumed heat amount distribution value Qd4 of the heater 3 is calculated as the following equation.
Qd4 = Qm × (Qc4 / ΣQc) (8)

そして、請求金額算出部９８は、外調機３の消費熱量按分値Ｑｄ４［Ｊ］に熱量単価ＵＰ［円／Ｊ］を乗じて外調機３の料金を算出し、この外調機３の料金を各請求先の貸床面積比率に応じて按分した按分料金を請求先毎に算出して、この按分料金を各請求先への請求金額に加えるようにすればよい。 Then, the billed amount calculation unit 98 calculates the charge of the external air conditioner 3 by multiplying the consumed heat amount distribution value Qd4 [J] of the external air conditioner 3 by the heat quantity unit price UP [yen / J]. It is possible to calculate an apportioned distribution fee, which is apportioned according to the floor area ratio of each billing destination, for each billing destination, and add the apportioned fee to the billing amount to each billing destination.

また、上記の説明では各空調ユニットに共通のコントローラ８を用いているが、コントローラ８を空調ユニットごとに分散設置してもよい。コントローラ８を分散設置する場合は、空調課金装置９から往き熱媒温度の情報を各コントローラ８に送信して、各コントローラ８で消費熱量算出値を計算し、その消費熱量算出値の情報を空調課金装置９に送信するようにしてもよい。 Moreover, although the controller 8 common to each air conditioning unit is used in said description, you may dispersely install the controller 8 for every air conditioning unit. When the controller 8 is distributively installed, the air conditioning charging device 9 sends the information of the heat medium temperature to the controllers 8 to calculate the heat consumption calculation value by each controller 8 and air-condition the information of the heat consumption calculation value. It may be transmitted to the charging device 9.

また、上記の説明では計量器４と圧力調整用バルブ５とを別々に設けているが、計量器４としてバルブ機能を有した熱量計を用いてもよい。バルブ機能を有した熱量計の場合、バルブ前後差圧を計測し流量を求めているため、圧力調整用バルブ５の機能を有しており、圧力調整用バルブ５の設置が必要なくなる。 Moreover, although the measuring device 4 and the pressure control valve 5 are separately provided in the above description, a calorimeter having a valve function may be used as the measuring device 4. In the case of a calorimeter having a valve function, since the flow rate is determined by measuring the differential pressure between the valves, it has the function of the pressure control valve 5, and the pressure control valve 5 does not have to be installed.

本実施の形態で説明した空調課金装置９は、ＣＰＵ（Central Processing Unit）、記憶装置及びインタフェースを備えたコンピュータと、これらのハードウェア資源を制御するプログラムによって実現することができる。ＣＰＵは、記憶装置に格納されたプログラムに従って本実施の形態で説明した処理を実行する。 The air conditioning charging apparatus 9 described in the present embodiment can be realized by a computer provided with a CPU (Central Processing Unit), a storage device, and an interface, and a program for controlling these hardware resources. The CPU executes the processing described in the present embodiment in accordance with the program stored in the storage device.

本発明は、空調料金を算出する技術に適用することができる。 The present invention can be applied to a technology for calculating an air conditioning charge.

１…熱源、２…ファンコイルユニット、３…外調機、４…計量器、５…圧力調整用バルブ、６，７…バルブ、８…コントローラ、９…空調課金装置、１０…空調エリア、１１…熱媒往き配管、１２…熱媒還り配管、９０…熱量取得部、９１…往き熱媒温度取得部、９２…バルブ開度取得部、９３…還り熱媒温度取得部、９４…流量算出部、９５…消費熱量算出部、９６…消費熱量按分値算出部、９７…請求先消費熱量按分値算出部、９８…請求金額算出部、９９…圧力調整用バルブ調整部。 DESCRIPTION OF SYMBOLS 1 ... Heat source, 2 ... Fan coil unit, 3 ... Air conditioner, 4 ... Weighing device, 5 ... Valve for pressure control, 6, 7 ... Valve, 8 ... Controller, 9 ... Air-conditioning charging device, 10 ... Air-conditioning area, 11 ... heat medium forward piping, 12 ... heat medium return piping, 90 ... heat quantity acquisition unit, 91 ... forward heat medium temperature acquisition unit, 92 ... valve opening degree acquisition unit, 93 ... return heat medium temperature acquisition unit, 94 ... flow rate calculation unit , 95: heat consumption calculation unit, 96: consumption heat ratio distribution value calculation unit, 97: billing destination consumption heat ratio value calculation unit, 98: billing amount calculation unit, 99: pressure adjustment valve adjustment unit.

Claims

A heat medium system for circulating a heat medium between a heat source and an air conditioning unit, a plurality of first air conditioning units for sending cooled or heated air to an air conditioning area, and the cooled or heated outside air for the first air conditioning An air conditioning charge system for calculating a plurality of air conditioning charges of a plurality of billing destinations in an air conditioning system in which a second air conditioning unit to be sent to the unit is disposed and a plurality of billing destinations exist in the heat medium system.
A heat transfer medium piping that supplies the heat transfer medium to at least a part of the air conditioning units installed in the heat transfer medium system, and the first and second air conditioning units that receive the supply of the heat transfer medium from the heat transfer medium transfer piping. A measuring unit for measuring the heat consumption of the constituent unit and the temperature of the heat transfer medium supplied from the heat source as a constituent unit;
The flow rate of the heat medium passing through the first and second air conditioning units is based on the opening degree value notified from the valve of the first and second air conditioning units belonging to the constituent unit, the first one belonging to the constituent unit, Flow rate calculation means calculated for each second air conditioning unit;
A difference between the temperature of the heat transfer medium determined by the measured value of the temperature of the heat transfer medium and the measured value of the temperature of the return heat transferred from the valves of the first and second air conditioning units, and the flow rate calculation value calculated by the flow rate calculation means Heat consumption calculation means for calculating the heat consumption of the first and second air conditioning units for each of the first and second air conditioning units belonging to the constituent unit, based on
The heat consumption distribution value obtained by dividing the heat consumption measurement value notified from the measuring device into the first and second air conditioning units according to the heat consumption calculation value calculated by the heat consumption calculation means belongs to the constituent unit Heat consumption distribution value calculation means calculated for each of the first and second air conditioning units;
The total value of the heat consumption apportionment value of the first air conditioning unit belonging to the billing destination of the air conditioning charge among the first air conditioning units belonging to the constituent unit is calculated for each billing destination as the consumption heat consumption fraction value of the billing destination Consumption heat amount distribution value calculation means;
The billed amount is calculated for each billed destination based on the consumed heat amount division value calculated by the claim heat consumption amount calculating means, and the second air conditioning unit is calculated based on the consumed heat amount division value of the second air conditioning unit. The charge amount is calculated, and a distribution charge obtained by dividing this charge according to the floor area ratio of each charge destination is calculated for each charge destination, and the charge amount to be added to the charge amount for each corresponding charge destination An air conditioning charging system comprising: calculating means.

A heat medium system for circulating a heat medium between a heat source and an air conditioning unit, a plurality of first air conditioning units for sending cooled or heated air to an air conditioning area, and the cooled or heated outside air for the first air conditioning An air conditioning charge method for calculating a plurality of air conditioning charges of a plurality of billing destinations in an air conditioning system in which a second air conditioning unit to be sent to the unit is disposed and a plurality of billing destinations exist in the heat medium system.
A heat transfer medium piping that supplies the heat transfer medium to at least a part of the air conditioning units installed in the heat transfer medium system, and the first and second air conditioning units that receive the supply of the heat transfer medium from the heat transfer medium transfer piping. A measuring step of measuring the heat consumption of the constituent unit and the temperature of the heat transfer medium supplied from the heat source as a constituent unit;
The flow rate of the heat medium passing through the first and second air conditioning units is based on the opening degree value notified from the valve of the first and second air conditioning units belonging to the constituent unit, the first one belonging to the constituent unit, A flow rate calculating step calculated for each second air conditioning unit;
A difference between the temperature of the heat transfer medium determined by the measured value of the temperature of the heat transfer medium and the measured value of the temperature of the return heat transferred from the valves of the first and second air conditioning units, and the flow rate calculation value calculated in the flow rate calculation step A heat consumption calculation step of calculating the heat consumption of the first and second air conditioning units for each of the first and second air conditioning units belonging to the constituent unit, based on
The heat consumption distribution value obtained by dividing the heat consumption measurement value measured in the measurement step into the first and second air conditioning units according to the heat consumption calculation value calculated in the heat consumption calculation step belongs to the constituent unit 1 and a second step of calculating the heat consumption distribution value calculated for each second air conditioning unit,
The total value of the heat consumption apportionment value of the first air conditioning unit belonging to the billing destination of the air conditioning charge among the first air conditioning units belonging to the constituent unit is calculated for each billing destination as the consumption heat consumption fraction value of the billing destination A heat consumption amount calculation step;
The billed amount is calculated for each billed destination based on the consumed heat amount divided value calculated in the billed consumed heat amount divided value step, and the second air conditioning unit is calculated based on the consumed heat amount divided value of the second air conditioning unit. The charge amount is calculated, and a distribution charge obtained by dividing this charge according to the floor area ratio of each charge destination is calculated for each charge destination, and the charge amount to be added to the charge amount for each corresponding charge destination An air conditioning charging method including the calculation step.