CN204853754U - A gas heat pump system for building cold and hot supply of inside and outside subregion - Google Patents
A gas heat pump system for building cold and hot supply of inside and outside subregion Download PDFInfo
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- CN204853754U CN204853754U CN201420237762.9U CN201420237762U CN204853754U CN 204853754 U CN204853754 U CN 204853754U CN 201420237762 U CN201420237762 U CN 201420237762U CN 204853754 U CN204853754 U CN 204853754U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 13
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims abstract description 4
- 238000004378 air conditioning Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000009408 flooring Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 230000001932 seasonal effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 26
- 239000002918 waste heat Substances 0.000 abstract description 15
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Other Air-Conditioning Systems (AREA)
Abstract
本实用新型公开一种用于建筑内外分区冷热供应的燃气热泵系统。该系统主要包括双管束冷凝器1、压缩机2、蒸发器3、节流阀4、燃气发动机5、热水余热回收装置6、冷却塔7、水-水换热器8、蓄水池9、辅助加热器10、蓄水池11、截止阀12、截止阀13、水泵14、水泵15、冷热用户末端设备16、冷用户末端设备17、水泵18，构成制冷剂系统、冷冻水系统、冷却水系统、采暖热水四个子系统。系统在满足冷负荷条件下运行，在热水循环回路中，水先通过双管束冷凝器1吸收冷凝热，之后通过燃气发动机热水余热回收装置6吸收发动机余热。该系统同时利用燃气热泵的冷热量，适用于同时有冷热需求、燃气供应充足的场所，并可对用电进行调峰。
The utility model discloses a gas heat pump system used for cold and heat supply in inner and outer partitions of buildings. The system mainly includes double tube bundle condenser 1, compressor 2, evaporator 3, throttle valve 4, gas engine 5, hot water waste heat recovery device 6, cooling tower 7, water-water heat exchanger 8, storage tank 9 , auxiliary heater 10, reservoir 11, shut-off valve 12, shut-off valve 13, water pump 14, water pump 15, cold and hot user terminal equipment 16, cold user terminal equipment 17, water pump 18, constitute a refrigerant system, a chilled water system, Cooling water system, heating and hot water four subsystems. The system operates under the condition of satisfying the cooling load. In the hot water circulation circuit, the water first absorbs the condensation heat through the double tube bundle condenser 1, and then absorbs the engine waste heat through the hot water waste heat recovery device 6 of the gas engine. The system utilizes the cold and heat of the gas heat pump at the same time, which is suitable for places with both hot and cold demand and sufficient gas supply, and can adjust the peak of electricity consumption.
Description
技术领域 technical field
本发明涉及燃气热泵空调余热及冷凝热回收应用技术。 The invention relates to an application technology for recovering waste heat and condensation heat of a gas heat pump air conditioner.
背景技术 Background technique
据调查，建筑能耗已占到我国社会总能耗的三分之一左右。其中，空调系统的能耗占到70％左右的水平。因此，降低建筑空调系统的能耗对于我国经济社会发展和技能目标具有重要意义。 According to the survey, building energy consumption has accounted for about one-third of the total energy consumption in our country. Among them, the energy consumption of the air conditioning system accounts for about 70% of the level. Therefore, reducing the energy consumption of building air-conditioning systems is of great significance to my country's economic and social development and technical goals.
(1)建筑按冷热需求特点分区 (1) Buildings are divided according to the characteristics of cooling and heating requirements
现代大型建筑一般进深较大,对于大面积的空调房间,内区与周边区负荷特性相差较大,周边区受环境温度变化的影响，冬季需采暖，夏季需制冷，而内部区域中的灯光、人员、各类设备的热量需经排风系统排出，如果内外区采用一个空调系统,则在冬季及过渡季节会出现内外区房间温差过大,在同一时间外区人员反映冷,而内区人员反映热。根据我国在2001年版的《采暖通风与空气调节设计规范》新增5.3.2条之规定,建筑物内负荷特性相差较大的内区与周边区,以及同一时间内必须分别进行加热与冷却的房间,宜分别设置空气调节系统。 Modern large-scale buildings generally have a large depth. For large-area air-conditioned rooms, the load characteristics of the inner area and the surrounding area are quite different. The surrounding area is affected by the change of ambient temperature. The heat of personnel and various equipment needs to be discharged through the exhaust system. If an air-conditioning system is used in the inner and outer areas, the temperature difference between the inner and outer areas will be too large in winter and transitional seasons. Reflect heat. According to the 2001 edition of my country's "Heating Ventilation and Air Conditioning Design Code" newly added Article 5.3.2, the inner area and the surrounding area with a large difference in load characteristics in the building, as well as the areas that must be heated and cooled separately at the same time Each room should be equipped with an air-conditioning system.
(2)双管束冷凝器热回收 (2) Heat recovery of double tube bundle condenser
双管束式冷凝器的热回收热泵系统常用于具有内区和周边区的大型建筑物。该冷凝器具有两路管束，一路管束中，水将冷凝器排出的热量吸收，送至需加热的房间末端装置，另一路管束中，水将热量吸收后，流至冷却塔冷却，将热量排至环境。 Heat recovery heat pump systems with twin tube bundle condensers are often used in large buildings with inner and perimeter zones. The condenser has two tube bundles. In one tube bundle, the water absorbs the heat discharged from the condenser and sends it to the end device of the room to be heated. In the other tube bundle, the water absorbs the heat and flows to the cooling tower to cool down and discharge the heat. to the environment.
(3)燃气热泵空调发动机余热利用 (3) Waste heat utilization of gas heat pump air conditioner engine
在燃气热泵空调系统中，燃气发动机驱动压缩机运行时，发动机转变为有效功的热当量占燃料燃烧发热量的37％，燃烧过程产生17％的能量损失，仍有可利用的46％热能被缸套水、废气带走未利用，不利于降低空调系统的能耗。 In the gas heat pump air conditioning system, when the gas engine drives the compressor to run, the heat equivalent converted into effective work by the engine accounts for 37% of the calorific value of fuel combustion, and 17% of the energy loss occurs during the combustion process, and 46% of the available heat energy is still consumed. Jacket water and exhaust gas are taken away and not used, which is not conducive to reducing the energy consumption of the air conditioning system.
目前，现有的燃气热泵空调系统中燃气发动机尾气的能源品位比较低，回收比较困难。相比起来，利用燃气发动机冷却水的余热却容易许多。燃气发动机的冷却水温度最高可达75℃。然而在传递相同热量的条件下，热水温升与其流量成反比，因而为保障采暖热水的温度，需采取其他辅助办法。 At present, the energy grade of gas engine exhaust in the existing gas heat pump air-conditioning system is relatively low, and it is difficult to recover. In comparison, it is much easier to use the waste heat of the gas engine cooling water. The cooling water temperature of the gas engine can reach up to 75°C. However, under the condition of transferring the same amount of heat, the temperature rise of hot water is inversely proportional to its flow rate, so in order to ensure the temperature of heating hot water, other auxiliary measures need to be taken.
发明内容 Contents of the invention
本实用新型提出了燃气热泵空调技术燃气发动机冷却水余热利用的新途径，目的在于充分利用燃气热泵空调系统的冷热量，提高空调机组的性能。 The utility model proposes a new way to utilize the residual heat of the gas engine cooling water of the gas heat pump air-conditioning technology, aiming at making full use of the cold heat of the gas heat pump air-conditioning system and improving the performance of the air-conditioning unit.
采暖热水依次通过冷凝器、发动机热水余热回收装置、辅助加热器至热水箱，供用户使用，保障热水供水温度。 The heating hot water passes through the condenser, the engine hot water waste heat recovery device, the auxiliary heater to the hot water tank in turn, and is used by users to ensure the temperature of the hot water supply.
通过储水箱后的阀门对末端设备进行供冷供热转换，即水路转换代替四通换向阀，避免不能满足对一年中只有供冷需求的用户供冷的问题。 Through the valve behind the water storage tank, the cooling and heating supply of the terminal equipment is converted, that is, the water channel conversion replaces the four-way reversing valve, so as to avoid the problem of not being able to meet the cooling supply for users who only have cooling demand throughout the year.
该技术适用于同时有冷热需求、燃气供应充足的场所，并可对用电进行调峰。 This technology is suitable for places with both hot and cold demand and sufficient gas supply, and can perform peak shaving of electricity consumption.
为此，本实用新型采取了如下技术方案：本系统主要由双管束冷凝器1、压缩机2、蒸发器3、节流阀4、燃气发动机5、热水余热回收装置6、冷却塔7、水-水换热器8、第一蓄水池9、辅助加热器10、第二蓄水池11、第一截止阀12、第二截止阀13、第一水泵14、第二水泵15、冷热用户末端设备16、冷用户末端设备17、第三水泵18构成。连接方式为，双管束冷凝器1第一进出口端与压缩机2连接、压缩机2与蒸发器3连接、蒸发器3与节流阀4连接，构成制冷压缩回路，燃气发动机5与热水余热回收装置6一端连接，构成热回收回路，冷却塔7经由第三水泵18与双管束冷凝器1第二进出口端连接，水-水换热器8与第一蓄水池9连接，第一蓄水池9与辅助加热器10连接，辅助加热器10与热水余热回收装置6另一出口端连接，热水余热回收装置6另一进口端与双管束冷凝器1第三进出口端连接，第二蓄水池(11)经由第二截止阀(13)、第一水泵(14)向冷热用户末端设备(16)供水，第二蓄水池(11)经第二水泵(15)向冷用户末端设备(17)供水。 For this reason, the utility model adopts the following technical scheme: the system is mainly composed of a double tube bundle condenser 1, a compressor 2, an evaporator 3, a throttle valve 4, a gas engine 5, a hot water waste heat recovery device 6, a cooling tower 7, Water-water heat exchanger 8, first storage tank 9, auxiliary heater 10, second storage tank 11, first stop valve 12, second stop valve 13, first water pump 14, second water pump 15, cooling The hot user terminal equipment 16, the cold user terminal equipment 17, and the third water pump 18 constitute. The connection mode is that the first inlet and outlet ends of the double tube bundle condenser 1 are connected with the compressor 2, the compressor 2 is connected with the evaporator 3, and the evaporator 3 is connected with the throttle valve 4 to form a refrigeration compression circuit, and the gas engine 5 is connected with the hot water One end of the waste heat recovery device 6 is connected to form a heat recovery circuit. The cooling tower 7 is connected to the second inlet and outlet of the double tube bundle condenser 1 through the third water pump 18. The water-water heat exchanger 8 is connected to the first water storage tank 9. The second A reservoir 9 is connected to the auxiliary heater 10, the auxiliary heater 10 is connected to the other outlet end of the hot water waste heat recovery device 6, the other inlet end of the hot water waste heat recovery device 6 is connected to the third inlet and outlet end of the double tube bundle condenser 1 connection, the second water storage tank (11) supplies water to the cold and hot user terminal equipment (16) through the second shut-off valve (13) and the first water pump (14), and the second water storage tank (11) passes through the second water pump (15 ) supply water to the cold user terminal equipment (17).
附图说明 Description of drawings
图1一种用于建筑内外分区冷热供应的燃气热泵系统原理图 Fig. 1 Schematic diagram of a gas heat pump system for cold and heat supply in and out of buildings
具体实施方式 Detailed ways
如图1所示，本系统主要由双管束冷凝器1、压缩机2、蒸发器3、节流阀4、燃气发动机5、热水余热回收装置6、冷却塔7、水-水换热器8、第一蓄水池9、辅助加热器10、第二蓄水池11、第一截止阀12、第二截止阀13、第一水泵14、第二水泵15、冷热用户末端设备16、冷用户末端设备17、第三水泵18构成。 As shown in Figure 1, this system is mainly composed of double tube bundle condenser 1, compressor 2, evaporator 3, throttle valve 4, gas engine 5, hot water waste heat recovery device 6, cooling tower 7, water-water heat exchanger 8. The first storage tank 9, the auxiliary heater 10, the second storage tank 11, the first stop valve 12, the second stop valve 13, the first water pump 14, the second water pump 15, the cold and hot user terminal equipment 16, The cold user terminal equipment 17 and the third water pump 18 constitute.
系统运行时，在冷冻水循环中，冷水与蒸发器中制冷剂换热；在热水循环回路中，水先通过双管束冷凝器1吸收冷凝热，之后通过燃气发动机热水余热回收装置6吸收烟气余热。 When the system is running, in the chilled water cycle, the cold water exchanges heat with the refrigerant in the evaporator; in the hot water cycle, the water first absorbs the condensation heat through the double tube bundle condenser 1, and then absorbs the flue gas through the gas engine hot water waste heat recovery device 6 waste heat.
系统在满足冷负荷条件下运行，供热分为供暖及供热水，供暖的热水循环为闭式系统，多余的热量用于供热水，在水-水换热器8中实现热交换。当总需冷量与总需热量平衡时，可直接供冷、供暖、供热水；当需热量小于放热量时，冷凝器多余的热量由冷却塔7冷却；当需热量大于放热量时，由辅助加热器10补充热量。 The system operates under the condition of satisfying the cooling load. The heat supply is divided into heating and hot water supply. The hot water circulation for heating is a closed system, and the excess heat is used for hot water supply. Heat exchange is realized in the water-water heat exchanger 8 . When the total required cooling capacity is in balance with the total required heat, it can directly supply cooling, heating, and hot water; when the required heat is less than the heat released, the excess heat of the condenser is cooled by the cooling tower 7; when the required heat is greater than the released heat, The heat is supplemented by auxiliary heater 10 .
将建筑内空调末端设备按冷热需求差异进行分区，分为冬季需供热、夏季需供冷的末端设备区16和全年只有供冷需求的末端设备区17，当末端设备区16需供热时，开启第一阀门12，关闭第二阀门13；当末端设备区16需供冷时，开启第二阀门13，关闭第一阀门12。 The air-conditioning terminal equipment in the building is divided according to the difference in cooling and heating demand, and is divided into a terminal equipment area 16 that requires heating in winter and cooling in summer and a terminal equipment area 17 that only needs cooling throughout the year. When the terminal equipment area 16 needs to supply When it is hot, open the first valve 12 and close the second valve 13; when the terminal equipment area 16 needs to be cooled, open the second valve 13 and close the first valve 12.
空调末端可以是地板辐射供暖、散热器供暖，也可以是风机盘管等形式。相比现有技术，本实用新型具有如下优势： The end of the air conditioner can be in the form of floor radiant heating, radiator heating, or fan coil. Compared with the prior art, the utility model has the following advantages:
(1)本实用新型利用了空调系统的冷凝热和燃气发动机的余热，可防止采暖热水温度达不到要求。 (1) The utility model utilizes the condensation heat of the air-conditioning system and the waste heat of the gas engine, which can prevent the temperature of the heating water from failing to meet the requirements.
(2)本实用新型同时利用了系统的冷量和热量，提高了系统的一次能源利用率。 (2) The utility model utilizes the cooling capacity and heat of the system at the same time, and improves the primary energy utilization rate of the system.
(3)本实用新型设置为集中空调系统，减少了设为分散式空调的燃气管网建设及运行费。 (3) The utility model is set as a centralized air-conditioning system, which reduces the gas pipeline network construction and operating costs set as a decentralized air-conditioning system.
(4)本实用新型在双管束冷凝器的一端设置冷却塔，保证需热量小于供热量时冷凝器的正常冷却和运行。 (4) The utility model is provided with a cooling tower at one end of the double-tube bundle condenser to ensure the normal cooling and operation of the condenser when the heat demand is less than the heat supply.
(5)本实用新型采暖热水管路与冷冻水管路都设置有储水箱，可通过储水箱后的阀门对末端设备进行供冷供热转换，即进行水路转换，避免了在冷剂系统使用四通换向阀而不能满足对一年中只有供冷需求的用户供冷。 (5) Both the heating hot water pipeline and the chilled water pipeline of the utility model are equipped with a water storage tank, and the valve behind the water storage tank can be used to switch the cooling and heating supply of the terminal equipment, that is, the waterway conversion, which avoids the use in the refrigerant system The four-way reversing valve cannot meet the cooling supply for users who only have cooling demand in a year.
(6)本实用新型适用于同时有冷热需求、燃气供应充足的场所，并可对用电进行调峰。 (6) The utility model is suitable for places with both hot and cold demands and sufficient gas supply, and can perform peak regulation on electricity consumption.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420237762.9U CN204853754U (en) | 2014-05-09 | 2014-05-09 | A gas heat pump system for building cold and hot supply of inside and outside subregion |
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| CN201420237762.9U CN204853754U (en) | 2014-05-09 | 2014-05-09 | A gas heat pump system for building cold and hot supply of inside and outside subregion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028408A (en) * | 2018-08-16 | 2018-12-18 | 埃洛普(广东)空调科技有限公司 | Central air-conditioning cooling, chilled water intelligent heat-exchange device systems |
| CN111811164A (en) * | 2020-06-03 | 2020-10-23 | 深圳市燃气集团股份有限公司 | Natural gas cold and heat cogeneration method |
-
2014
- 2014-05-09 CN CN201420237762.9U patent/CN204853754U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028408A (en) * | 2018-08-16 | 2018-12-18 | 埃洛普(广东)空调科技有限公司 | Central air-conditioning cooling, chilled water intelligent heat-exchange device systems |
| CN109028408B (en) * | 2018-08-16 | 2019-08-30 | 埃洛普(广东)空调科技有限公司 | Central air-conditioning cooling, chilled water intelligent heat-exchange device systems |
| CN111811164A (en) * | 2020-06-03 | 2020-10-23 | 深圳市燃气集团股份有限公司 | Natural gas cold and heat cogeneration method |
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