CN211876151U - Transcritical CO2 composite heat pump system - Google Patents
Transcritical CO2 composite heat pump system Download PDFInfo
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- CN211876151U CN211876151U CN201922277651.6U CN201922277651U CN211876151U CN 211876151 U CN211876151 U CN 211876151U CN 201922277651 U CN201922277651 U CN 201922277651U CN 211876151 U CN211876151 U CN 211876151U
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- water tank
- pipe
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- 239000002131 composite material Substances 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 53
- 229910002092 carbon dioxide Inorganic materials 0.000 description 26
- 239000000047 product Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to a transcritical CO2 composite heat pump system, including first water tank, CO2 heat pump system, second water tank, supplementary heat pump system and heat exchanger, the produced water of CO2 heat pump system passes through in the water pipe pours into first water tank into, water in the first water tank carries out the heat exchange through the water in heat exchanger and the supplementary heat pump system earlier before getting into CO2 heat pump system heating, the produced water of supplementary heat pump system passes through in the water pipe pours into the second water tank into. Through the temperature of intaking that reduces gas cooler in this patent CO2 system, guarantee the maximize of efficiency, the second evaporimeter is as the cold source with the intaking of gas cooler among the CO2 heat pump system among the supplementary heat pump system, the result make full use of to self system, the intaking and the heat exchanger of condenser carry out the heat transfer, the temperature of the condenser of advancing has been improved, the work efficiency is improved, the problem that the efficiency is low when solving CO2 system temperature of intaking when high, help further raising the efficiency, effectual energy saving.
Description
Technical Field
The utility model relates to a refrigeration plant technical field especially relates to a transcritical CO2 composite heat pump system.
Background
At present, an air source heat pump is used as clean energy to replace part of traditional boiler heating, freon is generally adopted as a refrigerant by the air source heat pump on the market, when the ambient temperature is lower than 0 ℃, the efficiency of a unit is greatly attenuated, and the highest outlet water temperature is generally between 40 ℃ and 55 ℃. Currently, there is still no ideal technology to achieve the efficiency degradation problem in the air source heat pump field at low ambient temperatures. In this case, CO2 (carbon dioxide) refrigerant is a desirable choice. CO2 is used as natural working medium, has no toxicity and pollution, is the most environment-friendly refrigerant, and is safer and easier to obtain compared with fluorine refrigerant. Although the CO2 heat pump system is gradually accepted, the common CO2 heat pump unit has a single function and is mainly used for heating.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transcritical CO2 composite heat pump system to solve the problem that meets in the above-mentioned background art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a transcritical CO2 composite heat pump system comprises a first water tank, a CO2 heat pump system, a second water tank, an auxiliary heat pump system and a heat exchanger, wherein the CO2 heat pump system comprises a first compressor, an oil separator, a gas cooler, a first electronic expansion valve, a first evaporator and a heat regenerator, an output pipe of the first compressor is connected with a top air inlet pipe of the gas cooler through the oil separator, a bottom output pipe of the gas cooler is connected with a top air inlet pipe of the heat regenerator, a bottom water inlet pipe of the gas cooler is connected with the first water tank through the heat exchanger, water in a top water outlet pipe of the gas cooler is injected into the first water tank, a bottom air inlet pipe of the heat regenerator is connected with the first evaporator through the first electronic expansion valve, an outlet pipe of the first evaporator is connected with a bottom inlet pipe of the heat regenerator, a top air return pipe of the heat regenerator is connected with an air inlet pipe of the first compressor, and water generated by the auxiliary heat pump system is injected into the second water tank through a water pipe.
In the above scheme, the auxiliary heat pump system includes a second evaporator, a second compressor, a condenser, and a second electronic expansion valve, an output pipe of the second compressor is connected to a top intake pipe of the condenser, a bottom liquid outlet pipe of the condenser is connected to a bottom inlet pipe of the second evaporator through the second electronic expansion valve, a top return pipe of the second evaporator is connected to an intake pipe of the second compressor, a bottom water inlet pipe of the condenser is connected to a second water tank through a heat exchanger, and water in a top water outlet pipe of the condenser is injected into the second water tank.
In the above scheme, the cold source of the second evaporator is inlet water in the CO2 heat pump system.
In the scheme, the water temperature conveyed by the first water tank is 60-70 degrees, and the water temperature conveyed by the second water tank is 40-50 degrees.
In the above scheme, the partition boards for separating cold water from hot water are arranged in the first water tank and the second water tank.
In the above scheme, a first water pump is arranged on a pipeline between the first water tank and the CO2 heat pump system, and a second water pump is arranged on a pipeline between the second water tank and the auxiliary heat pump system.
Compared with the prior art, the beneficial effects of the utility model are that: through the temperature of intaking that reduces gas cooler in this patent CO2 system, guarantee the maximize of efficiency, the second evaporimeter is as the cold source with the intaking of gas cooler among the CO2 heat pump system among the supplementary heat pump system, to the product make full use of self system. The water inlet of the condenser exchanges heat with the heat exchanger, so that the temperature of water entering the condenser is improved, and the working efficiency is improved. Set up two water tanks in this patent, satisfy different operation requirements, guarantee when the water tank temperature reaches, the system can be shut down, the energy saving. The problem that the efficiency is low when this patent is used for solving CO2 system temperature of intaking high time helps further raising the efficiency, effectual energy saving. This patent has increased domestic water's function on the basis of heating for heat pump system has multiple use, and the investment cost of saving equipment has improved the rate of utilization of equipment.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Reference numbers in the figures: 1-a first water tank, 10-a first water pump, 11-a first compressor, 12-an oil separator, 13-a gas cooler, 14-a first electronic expansion valve, 15-a first evaporator and 16-a heat regenerator; 2-a second water tank, 20-a first water pump, 21-a second evaporator, 22-a second compressor, 23-a condenser, 24-a second electronic expansion valve and 3-a heat exchanger.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1, a transcritical CO2 composite heat pump system comprises a first water tank 1, a CO2 heat pump system, a second water tank 2, an auxiliary heat pump system and a heat exchanger 3, wherein the CO2 heat pump system comprises a first compressor 11, an oil separator 12, a gas cooler 13, a first electronic expansion valve 14, a first evaporator 15 and a heat regenerator 16, an output pipe of the first compressor 11 is connected with a top inlet pipe of the gas cooler 13 through the oil separator 12, a bottom output pipe of the gas cooler 13 is connected with a top inlet pipe of the heat regenerator 16, a bottom inlet pipe of the gas cooler 13 is connected with the first water tank 1 through the heat exchanger 3, water in a top outlet pipe of the gas cooler 13 is injected into the first water tank 1, a return pipe of the heat regenerator 16 is connected with the first evaporator 15 through the first electronic expansion valve 14, an outlet pipe of the first evaporator 15 is connected with a bottom inlet pipe of the heat regenerator 16, the top outlet line of the regenerator 16 is connected to the inlet pipe of the first compressor 11.
The auxiliary heat pump system comprises a second evaporator 21, a second compressor 22, a condenser 23 and a second electronic expansion valve 24, wherein an output pipe of the second compressor 22 is connected with a top air inlet pipe of the condenser 23, a bottom liquid outlet pipe of the condenser 23 is connected with a bottom liquid inlet pipe of the second evaporator 21 through the second electronic expansion valve 24, a gas return pipe of the second evaporator 21 is connected with an air suction port of the second compressor 22, a bottom water inlet pipe of the condenser 23 is connected with the second water tank 2 through a heat exchanger 3, and water in a top water outlet pipe of the condenser 23 is injected into the second water tank 2. The auxiliary heat pump system can also adopt the existing Freon heat pump system to complete the auxiliary heat pump function in the transcritical CO2 composite heat pump system.
In the transcritical CO2 composite heat pump system, the cold source of the second evaporator 21 in the auxiliary heat pump system is the inlet water of the gas cooler 13 in the CO2 heat pump system, and the existing products of the system are reasonably utilized to save the external energy consumption. Before entering the CO2 heat pump system for heating, the water in the first water tank 1 exchanges heat with the water in the auxiliary heat pump system through the heat exchanger 3, and the existing product of the system is reused for reasonable utilization, so that the external energy consumption is saved.
The water temperature delivered by the first water tank 1 is 60-70 degrees, and the water temperature delivered by the second water tank 2 is 40-50 degrees. The first water tank 1 provides 60-70 ℃ heating water for users, the heating return water can enter the first water tank 1 again for water supplement, the second water tank 2 provides 40-50 ℃ domestic water for users, the water supplement is provided by an external water source, and the requirements of different users are met by setting two different kinds of warm water respectively.
The first water tank 1 and the second water tank 2 are provided with partitions for separating cold water from hot water, and when cold water rises on the cold water side of the partitions, the cold water enters the hot water side. A first water pump 10 is arranged on a pipeline between the first water tank 1 and the CO2 heat pump system to control a water source in the first water tank to enter the CO2 heat pump system, and a second water pump 20 is arranged on a pipeline between the second water tank 2 and the auxiliary heat pump system to control a water source in the second water tank to enter the auxiliary heat pump system.
Through the temperature of intaking that reduces gas cooler 13 in this patent CO2 system, guarantee the maximize of efficiency, second evaporimeter 21 is as the cold source with gas cooler 13's among the CO2 heat pump system intaking in the supplementary heat pump system, to the product make full use of self system. The water inlet of the condenser 23 exchanges heat with the heat exchanger 3, so that the water temperature of the water inlet of the condenser 23 is improved, and the working efficiency is improved.
Set up two water tanks in this patent, satisfy different operation requirements, guarantee when the water tank temperature reaches, the system can be shut down, the energy saving. The problem that the efficiency is low when this patent is used for solving CO2 system temperature of intaking high time helps further raising the efficiency, effectual energy saving. This patent has increased domestic water's function on the basis of heating for heat pump system has multiple use, and the investment cost of saving equipment has improved the rate of utilization of equipment.
The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (6)
1. A transcritical CO2 hybrid heat pump system, characterized in that: the heat pump system comprises a first water tank (1), a CO2 heat pump system, a second water tank (2), an auxiliary heat pump system and a heat exchanger (3), wherein the CO2 heat pump system comprises a first compressor (11), an oil separator (12), a gas cooler (13), a first electronic expansion valve (14), a first evaporator (15) and a heat regenerator (16), an output pipe of the first compressor (11) is connected with a top air inlet pipe of the gas cooler (13) through the oil separator (12), a bottom output pipe of the gas cooler (13) is connected with a top air inlet pipe of the heat regenerator (16), a bottom water inlet pipe of the gas cooler (13) is connected with the first water tank (1) through the heat exchanger (3), water in a top water outlet pipe of the gas cooler (13) is injected into the first water tank (1), a bottom air inlet pipe of the heat regenerator (16) is connected with the first evaporator (15) through the first electronic expansion valve (14), an outlet pipeline of the first evaporator (15) is connected with a bottom inlet pipeline of the heat regenerator (16), a top air return pipe of the heat regenerator (16) is connected with an air inlet pipe of the first compressor (11), and water generated by the auxiliary heat pump system is injected into the second water tank (2) through a water pipe.
2. The transcritical CO2 hybrid heat pump system according to claim 1, wherein: the auxiliary heat pump system comprises a second evaporator (21), a second compressor (22), a condenser (23) and a second electronic expansion valve (24), an output pipe of the second compressor (22) is connected with a top air inlet pipe of the condenser (23), a bottom liquid outlet pipe of the condenser (23) is connected with a bottom inlet pipeline of the second evaporator (21) through the second electronic expansion valve (24), a top air return pipe of the second evaporator (21) is connected with an air inlet pipe of the second compressor (22), a bottom water inlet pipe of the condenser (23) is connected with a second water tank (2) through a heat exchanger (3), and water in a top water outlet pipe of the condenser (23) is injected into the second water tank (2).
3. The transcritical CO2 hybrid heat pump system according to claim 2, wherein: the cold source of the second evaporator (21) is inlet water in the CO2 heat pump system.
4. The transcritical CO2 hybrid heat pump system according to claim 1, wherein: the water temperature conveyed by the first water tank (1) is 60-70 ℃, and the water temperature conveyed by the second water tank (2) is 40-50 ℃.
5. The transcritical CO2 hybrid heat pump system according to claim 1, wherein: and partition plates for separating cold water from hot water are arranged in the first water tank (1) and the second water tank (2).
6. The transcritical CO2 hybrid heat pump system according to claim 1, wherein: a first water pump (10) is arranged on a pipeline between the first water tank (1) and the CO2 heat pump system, and a second water pump (20) is arranged on a pipeline between the second water tank (2) and the auxiliary heat pump system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922277651.6U CN211876151U (en) | 2019-12-18 | 2019-12-18 | Transcritical CO2 composite heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922277651.6U CN211876151U (en) | 2019-12-18 | 2019-12-18 | Transcritical CO2 composite heat pump system |
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| Publication Number | Publication Date |
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| CN211876151U true CN211876151U (en) | 2020-11-06 |
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| CN201922277651.6U Active CN211876151U (en) | 2019-12-18 | 2019-12-18 | Transcritical CO2 composite heat pump system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288537A (en) * | 2019-12-18 | 2020-06-16 | 南京久鼎精机冷冻设备有限公司 | Transcritical CO2Composite heat pump system |
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2019
- 2019-12-18 CN CN201922277651.6U patent/CN211876151U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288537A (en) * | 2019-12-18 | 2020-06-16 | 南京久鼎精机冷冻设备有限公司 | Transcritical CO2Composite heat pump system |
| CN111288537B (en) * | 2019-12-18 | 2024-03-12 | 南京久鼎精机冷冻设备有限公司 | Transcritical CO 2 Composite heat pump system |
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