CN101498494A - Economical operation method for central air conditioning system - Google Patents
Economical operation method for central air conditioning system Download PDFInfo
- Publication number
- CN101498494A CN101498494A CNA2008100332783A CN200810033278A CN101498494A CN 101498494 A CN101498494 A CN 101498494A CN A2008100332783 A CNA2008100332783 A CN A2008100332783A CN 200810033278 A CN200810033278 A CN 200810033278A CN 101498494 A CN101498494 A CN 101498494A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005057 refrigeration Methods 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- 235000019628 coolness Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
本发明涉及一种集中空调系统的经济运行方法，包括以下步骤：蓄冷运行，控制系统控制风机盘管进口端阀门关闭，蓄冷槽两端阀门打开，冷冻水由制冷主机蒸发器出来经阀门进入蓄冷槽，并与槽内蓄冷介质进行热交换，热交换后的冷冻水在蓄冷槽集水管处汇流经冷冻水泵输送到制冷主机蒸发器进行降温，完成蓄冷循环；供冷运行，通过控制系统的监控器监测环境温度及空调负荷变化，并计算得出制冷主机的压缩机在何种工况下能效比最高，通过变频器改变离心式压缩机的转速使之在最佳工况下运行，不足的冷负荷由蓄冷槽提供，富余的冷量存储在蓄冷槽中。本发明使集中空调的制冷主机始终以最高的效率运行，不随外界气温、空调负荷的变化而变化，节能效果趋向最大化。
The invention relates to an economical operation method of a centralized air-conditioning system, comprising the following steps: cold storage operation, a control system controls the valve at the inlet end of the fan coil unit to close, the valves at both ends of the cold storage tank open, and the frozen water comes out of the evaporator of the refrigeration main engine and enters the cold storage through the valve tank, and conduct heat exchange with the cold storage medium in the tank. After the heat exchange, the chilled water is confluent at the water collection pipe of the cool storage tank and sent to the evaporator of the refrigeration host for cooling through the chilled water pump to complete the cold storage cycle; the cooling operation is monitored by the control system The controller monitors the ambient temperature and air-conditioning load changes, and calculates under which working conditions the compressor of the refrigeration host has the highest energy efficiency ratio, and changes the speed of the centrifugal compressor through the frequency converter to make it run under the best working conditions. The cooling load is provided by the cold storage tank, and the surplus cold capacity is stored in the cold storage tank. The invention makes the refrigeration main engine of the central air conditioner always run with the highest efficiency, does not change with the change of the outside air temperature and the load of the air conditioner, and the energy saving effect tends to be maximized.
Description
Technical field
The present invention relates to the economical operation method of HVAC, relate in particular to a kind of economical operation method of central air-conditioning system.
Background technology
Now, in central air-conditioning system, Energy Efficiency Ratio greatly improved after the centrifugal refrigerating unit adopted converter technique, but the Energy Efficiency Ratio that improves has certain limitation scope, most between the loading zone about 40%～60%, just can reach high energy efficiency ratio, but it is not to run in this interval that the plenty of time is arranged the whole year, and optimum energy-saving effect is restricted.In addition, the control system of central air-conditioning system generally can realize functions such as warning, parameter demonstration, equipment linkage start and stop, but need the monitor staff according to weather condition, electricity price factor and load condition is artificially judged, manually control the conversion of various operating conditions, therefore there is the control inaccuracy, unhandy problem.
See also Fig. 1, this figure is the system block diagram of the central air-conditioning system of prior art, comprise that one contains the refrigeration host computer 1 of condenser 11, evaporimeter 12, compressor and throttling arrangement, this refrigeration host computer 1 is a frequency conversion centrifugal refrigerating machines, it also comprises: a cooling tower 2, one end are series at the two ends of the condenser 11 of refrigeration host computer 1 by a cooling water pump 72; One cold-storage groove 3, one end are connected with the port of export of the evaporimeter 12 of refrigeration host computer 1 by an electric two-way valve 52, and connect successively another electric two-way valve 54, a chilled water pump 71 of the other end afterwards is connected with the entrance point of the evaporimeter 12 of described refrigeration host computer 1; One fan coil 4, one end are connected with evaporimeter 12 ports of export by another electric two-way valve 51, the other end electric T-shaped valve 53 of connecting, and other two ends of this valve are connected with cold-storage groove 3 imports, chilled water pump 71 imports respectively; One control system 6 is connected with thermometric contact and all valves 51,52,53,54 of an end of the two ends of the two ends of fan coil 4, evaporimeter 12, condenser 11 respectively, realizes the switch of valve, conversion operation operating mode according to built-in algorithms and program.
Summary of the invention
In order to overcome above-mentioned problem, the present invention aims to provide a kind of economical operation method that is used for central air-conditioning system, to improve the operational efficiency of frequency conversion centrifugal refrigerating main frame, makes it all the time with the peak efficiency operation, promptly guarantees the maximization of main frame Energy Efficiency Ratio.
Technical scheme of the present invention is: a kind of economical operation method of central air-conditioning system, be used for the in service of central air-conditioning system, and may further comprise the steps:
The cold-storage operation, be that night is during cold-storage, control system control fan coil entrance point valve closing, cold-storage groove two ends valve open, chilled water is come out to enter cold-storage groove through valve by the refrigeration host computer evaporimeter, and with groove in cool storage medium carry out heat exchange, the chilled water after the heat exchange confluxes at cold-storage groove collector pipe place and is transported to the refrigeration host computer evaporimeter through chilled water pump and lowers the temperature, finish cold-storage circulation, and by control system control refrigeration host computer all the time with high energy efficiency than operation;
The cooling operation, be that daytime is during cooling, watch-dog monitoring of environmental temperature and air conditioner load by control system change, and the compressor Energy Efficiency Ratio under which kind of operating mode that calculates refrigeration host computer is the highest, the rotating speed that changes centrifugal compressor by frequency converter makes it to move under optimum condition, not enough refrigeration duty is provided by cold-storage groove, and cold more than needed is stored in the cold-storage groove.
In the economical operation method of above-mentioned central air-conditioning system, described cooling is in service, also comprises the comparison process step, is about to that the detected refrigeration host computer of control system move the refrigerating capacity exported under maximum Energy Efficiency Ratio and user's air conditioner load compares, operate accordingly then, that is:
If control system monitors refrigeration host computer when move the refrigerating capacity of exporting equaling user's air-conditioning refrigeration duty under maximum Energy Efficiency Ratio, then by refrigeration host computer directly to the fan coil cooling;
If control system monitors refrigeration host computer and move the requirement of the refrigerating capacity of output less than user's air conditioner load under maximum Energy Efficiency Ratio, then control system controls to adjust electric T-shaped valve, open the path of fan coil and cold-storage groove, the backwater that is come out by fan coil is introduced into the cold-storage groove cooling, send into evaporimeter through cooling water pump again and further lower the temperature, be transported to user side again;
If control system monitors refrigeration host computer and move the air-conditioning refrigeration duty of the refrigerating capacity of output greater than the user under maximum Energy Efficiency Ratio, then control system controls to adjust electric T-shaped valve, close the path of fan coil and cold-storage groove, cold-storage groove two ends valve opening is stored unnecessary cold.
In the economical operation method of above-mentioned central air-conditioning system, if monitoring the cold of cold-storage groove, control system satisfies the residue load, then control system control refrigeration host computer is out of service, provides cold to fan coil separately by cold-storage groove.
In the economical operation method of above-mentioned central air-conditioning system, described control system realizes the switch of valve, the conversion of operating condition according to built-in algorithms and program.
In the economical operation method of above-mentioned central air-conditioning system, cold-storage is in service, and refrigeration host computer list cold-storage operating mode was moved automatically by the time of setting, and out of service automatically in the low ebb electricity price period according to the second day required cold that predicts.
Owing to adopted above-mentioned technical solution, the present invention changes according to air conditioner load and adjusts refrigeration host computer move the cold exported and the coupling of releasing cold or cold storage capacity of cool storage medium under peak efficiency, promptly, when main frame high energy efficiency than under the cold of operation output during less than the air-conditioning refrigeration duty, not enough cold is discharged by cool storage medium; Otherwise unnecessary cold is stored in the cool storage medium, discharges during in order to deficiency, thereby the refrigeration host computer of central air-conditioning is moved with the highest efficient all the time, and the variation with outside air temperature, air conditioner load does not change, the maximization of energy-saving effect trend.In addition, utilize the peak and valley time electricity price to save considerable operating cost for the user.
Description of drawings
Fig. 1 is the system block diagram of the cold-storage central air-conditioning system of prior art.
The specific embodiment
Fig. 1 below in conjunction with prior art describes in detail the present invention.
The present invention is the economical operation method based on a kind of central air-conditioning system of prior art, is used for the in service of central air-conditioning system, may further comprise the steps:
The cold-storage operation, be that night is during cold-storage, control system 6 control fan coil entrance point valves 51 are closed, cold-storage groove 3 two ends valves 52,54 are opened, chilled water is come out to enter cold-storage groove 3 through valve 52 by refrigeration host computer 1 evaporimeter 12, and with groove in cool storage medium carry out heat exchange, chilled water after the heat exchange confluxes at cold-storage groove 3 collector pipe places and is transported to refrigeration host computer 1 evaporimeter 12 through chilled water pump 71 and lowers the temperature, finish cold-storage circulation, and by control system 6 control refrigeration host computers 1 all the time with high energy efficiency than operation;
The cooling operation, be that daytime is during cooling, watch-dog monitoring of environmental temperature and air conditioner load by control system 6 change, and the compressor Energy Efficiency Ratio under which kind of operating mode that calculates refrigeration host computer 1 is the highest, the rotating speed that changes centrifugal compressor by frequency converter makes it to move under optimum condition, not enough refrigeration duty is provided by cold-storage groove 3, and cold more than needed is stored in the cold-storage groove 3.
In service at cooling, also comprise the comparison process step, be about to that control system 6 detected refrigeration host computers 1 moves the refrigerating capacity exported under maximum Energy Efficiency Ratio and user's air conditioner load compares, operate accordingly then, that is:
If control system 6 monitors refrigeration host computer 1 when move the refrigerating capacity of exporting equaling user's air-conditioning refrigeration duty under maximum Energy Efficiency Ratio, then by refrigeration host computer 1 directly to fan coil 4 coolings;
If control system 6 monitors refrigeration host computer 1 and move the requirement of the refrigerating capacity of output less than user's air conditioner load under maximum Energy Efficiency Ratio, then control system 6 controls to adjust electric T-shaped valves 53, open the path of fan coil 4 and cold-storage groove 3, the backwater that is come out by fan coil 4 is introduced into cold-storage groove 3 coolings, send into evaporimeter 12 through cooling water pump 72 again and further lower the temperature, be transported to user side again;
If control system 6 monitors refrigeration host computer 1 and move the air-conditioning refrigeration duty of the refrigerating capacity of output greater than the user under maximum Energy Efficiency Ratio, then control system 6 controls to adjust electric T-shaped valves 53, close the path of fan coil 4 and cold-storage groove 3, cold-storage groove 3 two ends valves 52,54 are opened, and store unnecessary cold.
Satisfy the residue load if control system 6 monitors the cold of cold-storage groove 3, then control system 6 control refrigeration host computers 1 are out of service, provide cold to fan coil 4 separately by cold-storage groove 3.
In said method, control system 6 realizes the switch of valve, the conversion of operating condition according to built-in algorithms and program.
In service at above-mentioned cold-storage, refrigeration host computer 1 single cold-storage operating mode was moved automatically by the time of setting, and out of service automatically in the low ebb electricity price period according to the second day required cold that predicts.
In sum, the present invention makes the refrigeration host computer of central air-conditioning all the time with the highest efficient operation, and the variation with outside air temperature, air conditioner load does not change, the maximization of energy-saving effect trend.In addition, utilize the peak and valley time electricity price to save considerable operating cost for the user.
Below embodiment has been described in detail the present invention in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details among the embodiment should not constitute limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (5)
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| CN2008100332783A CN101498494B (en) | 2008-01-31 | 2008-01-31 | An economical operation method of central air-conditioning system |
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| CN2008100332783A CN101498494B (en) | 2008-01-31 | 2008-01-31 | An economical operation method of central air-conditioning system |
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| CN101498494A true CN101498494A (en) | 2009-08-05 |
| CN101498494B CN101498494B (en) | 2010-06-09 |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679649A (en) * | 2012-05-25 | 2012-09-19 | 王慧文 | Energy conservation control device and energy conservation control method of refrigerating system |
| CN102914028A (en) * | 2012-10-19 | 2013-02-06 | 广东美的制冷设备有限公司 | Energy saving control method and system as well as air conditioner |
| CN103062866A (en) * | 2013-01-04 | 2013-04-24 | 广东美的制冷设备有限公司 | Energy saving control method, energy saving control system and air conditioner |
| CN103234250A (en) * | 2013-05-15 | 2013-08-07 | 新奥科技发展有限公司 | Chilled water storage air conditioning system and operation method thereof |
| CN103277855A (en) * | 2013-05-29 | 2013-09-04 | 赖正伦 | Distributed energy storage control method and energy storage device of distributed energy storage control method |
| CN103335365A (en) * | 2013-06-05 | 2013-10-02 | 深圳达实智能股份有限公司 | Ice storage air-conditioning system and operation method thereof |
| CN104279667A (en) * | 2014-10-11 | 2015-01-14 | 深圳市英普生环保科技有限公司 | Phase-change energy-storage air-conditioning system |
| CN104848633A (en) * | 2015-04-17 | 2015-08-19 | 南京祥源动力供应有限公司 | Energy-saving chilled water supply device |
| CN106594925A (en) * | 2016-11-07 | 2017-04-26 | 珠海格力电器股份有限公司 | Heat pump system, control method and air conditioner |
| CN107110570A (en) * | 2014-12-26 | 2017-08-29 | 大金工业株式会社 | Heat storage type air conditioner |
| CN108518773A (en) * | 2018-04-03 | 2018-09-11 | 中国科学院广州能源研究所 | An energy storage double cycle heat pump air conditioning system |
| CN108895691A (en) * | 2018-08-14 | 2018-11-27 | 中节能城市节能研究院有限公司 | A kind of SAPMAC method that freezed combines power supply device and method with charge cycle |
| CN109059154A (en) * | 2018-08-07 | 2018-12-21 | 王凯旋 | A kind of Commercial Complex shares cold source with for cold accumulation system and its control method |
| CN110006125A (en) * | 2019-05-15 | 2019-07-12 | 荏原冷热系统（中国）有限公司 | A kind of air-conditioner set control system and its energy-saving control method |
| CN110145828A (en) * | 2019-06-12 | 2019-08-20 | 珠海格力电器股份有限公司 | Air conditioning system, integrated cold station and control method of integrated cold station |
| CN112502978A (en) * | 2020-12-17 | 2021-03-16 | 西安向阳新环保科技有限公司 | Mechanical vacuum pump unit with refrigeration equipment |
| CN113167493A (en) * | 2018-12-06 | 2021-07-23 | 东芝开利株式会社 | Air conditioner |
| CN113587287A (en) * | 2021-08-06 | 2021-11-02 | 宝加国际有限公司 | Super-efficient phase-change energy-storage load-variable central air-conditioning system |
| CN114294737A (en) * | 2021-12-23 | 2022-04-08 | 珠海格力电器股份有限公司 | Refrigeration system, control method and air conditioner |
| CN114413369A (en) * | 2022-03-28 | 2022-04-29 | 深圳市森若新材科技有限公司 | Cold storage air conditioning system based on nano microcapsule suspension phase change material and control method |
| CN114992693A (en) * | 2021-03-01 | 2022-09-02 | 艾欧史密斯(中国)热水器有限公司 | Heat pump unit and control method and device thereof, heat pump system and combined supply system |
| CN115540103A (en) * | 2021-06-30 | 2022-12-30 | 北京天诚同创电气有限公司 | heat exchange system |
-
2008
- 2008-01-31 CN CN2008100332783A patent/CN101498494B/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679649B (en) * | 2012-05-25 | 2014-10-29 | 王慧文 | Energy conservation control device and energy conservation control method of refrigerating system |
| CN102679649A (en) * | 2012-05-25 | 2012-09-19 | 王慧文 | Energy conservation control device and energy conservation control method of refrigerating system |
| CN102914028A (en) * | 2012-10-19 | 2013-02-06 | 广东美的制冷设备有限公司 | Energy saving control method and system as well as air conditioner |
| CN102914028B (en) * | 2012-10-19 | 2015-12-16 | 广东美的制冷设备有限公司 | Energy-saving control method, system and air-conditioner |
| CN103062866A (en) * | 2013-01-04 | 2013-04-24 | 广东美的制冷设备有限公司 | Energy saving control method, energy saving control system and air conditioner |
| CN103234250A (en) * | 2013-05-15 | 2013-08-07 | 新奥科技发展有限公司 | Chilled water storage air conditioning system and operation method thereof |
| CN103234250B (en) * | 2013-05-15 | 2015-09-16 | 新奥科技发展有限公司 | A kind of water cool-storage technology system and operation method thereof |
| CN103277855A (en) * | 2013-05-29 | 2013-09-04 | 赖正伦 | Distributed energy storage control method and energy storage device of distributed energy storage control method |
| CN103277855B (en) * | 2013-05-29 | 2016-06-08 | 赖正伦 | A kind of distributed energy-accumulation control method and accumulation of energy device thereof |
| CN103335365A (en) * | 2013-06-05 | 2013-10-02 | 深圳达实智能股份有限公司 | Ice storage air-conditioning system and operation method thereof |
| CN104279667B (en) * | 2014-10-11 | 2017-03-01 | 东莞市兆荣节能科技有限公司 | A kind of phase change energy storage air conditioning system |
| CN104279667A (en) * | 2014-10-11 | 2015-01-14 | 深圳市英普生环保科技有限公司 | Phase-change energy-storage air-conditioning system |
| CN107110570A (en) * | 2014-12-26 | 2017-08-29 | 大金工业株式会社 | Heat storage type air conditioner |
| CN104848633A (en) * | 2015-04-17 | 2015-08-19 | 南京祥源动力供应有限公司 | Energy-saving chilled water supply device |
| CN106594925A (en) * | 2016-11-07 | 2017-04-26 | 珠海格力电器股份有限公司 | Heat pump system, control method and air conditioner |
| CN108518773A (en) * | 2018-04-03 | 2018-09-11 | 中国科学院广州能源研究所 | An energy storage double cycle heat pump air conditioning system |
| CN108518773B (en) * | 2018-04-03 | 2023-11-03 | 中国科学院广州能源研究所 | Energy storage type double-circulation heat pump air conditioning system |
| CN109059154A (en) * | 2018-08-07 | 2018-12-21 | 王凯旋 | A kind of Commercial Complex shares cold source with for cold accumulation system and its control method |
| CN108895691A (en) * | 2018-08-14 | 2018-11-27 | 中节能城市节能研究院有限公司 | A kind of SAPMAC method that freezed combines power supply device and method with charge cycle |
| CN108895691B (en) * | 2018-08-14 | 2023-09-26 | 中节能城市节能研究院有限公司 | Combined energy supply device and method for refrigeration supercooling cycle and cold accumulation cycle |
| CN113167493A (en) * | 2018-12-06 | 2021-07-23 | 东芝开利株式会社 | Air conditioner |
| CN110006125A (en) * | 2019-05-15 | 2019-07-12 | 荏原冷热系统（中国）有限公司 | A kind of air-conditioner set control system and its energy-saving control method |
| CN110145828A (en) * | 2019-06-12 | 2019-08-20 | 珠海格力电器股份有限公司 | Air conditioning system, integrated cold station and control method of integrated cold station |
| CN112502978A (en) * | 2020-12-17 | 2021-03-16 | 西安向阳新环保科技有限公司 | Mechanical vacuum pump unit with refrigeration equipment |
| CN114992693A (en) * | 2021-03-01 | 2022-09-02 | 艾欧史密斯(中国)热水器有限公司 | Heat pump unit and control method and device thereof, heat pump system and combined supply system |
| CN114992693B (en) * | 2021-03-01 | 2024-08-27 | 艾欧史密斯(中国)热水器有限公司 | Heat pump unit, control method and control device thereof, heat pump system and combined supply system |
| CN115540103A (en) * | 2021-06-30 | 2022-12-30 | 北京天诚同创电气有限公司 | heat exchange system |
| CN113587287A (en) * | 2021-08-06 | 2021-11-02 | 宝加国际有限公司 | Super-efficient phase-change energy-storage load-variable central air-conditioning system |
| CN114294737A (en) * | 2021-12-23 | 2022-04-08 | 珠海格力电器股份有限公司 | Refrigeration system, control method and air conditioner |
| CN114413369A (en) * | 2022-03-28 | 2022-04-29 | 深圳市森若新材科技有限公司 | Cold storage air conditioning system based on nano microcapsule suspension phase change material and control method |
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| CN101498494B (en) | 2010-06-09 |
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Effective date of registration: 20120530 Address after: 200233 No. 222, Qin Jiang Road, Shanghai, Xuhui District Patentee after: Shanghai Nangong Electrical Design Co.,Ltd. Address before: 200233 No. 222 Chiang Lu, Shanghai Co-patentee before: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: SHANGHAI NANQU ENERGY SAVING T Co-patentee before: Shanghai Maritime University |
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Owner name: SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY SHANGHAI Free format text: FORMER OWNER: SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY SHANGHAI MARITIME UNIVERSITY Effective date: 20121025 |
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Effective date of registration: 20121025 Address after: 200233 No. 222, Qin Jiang Road, Shanghai, Xuhui District Patentee after: Shanghai Nangong Electrical Design Co.,Ltd. Patentee after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: Shanghai Maritime University Patentee after: State Grid Corporation of China Address before: 200233 No. 222, Qin Jiang Road, Shanghai, Xuhui District Patentee before: Shanghai Nangong Electrical Design Co.,Ltd. Patentee before: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: Shanghai Maritime University |
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