CN112628841A - Solar energy-sewage source heat pump coupling hot water system - Google Patents
Solar energy-sewage source heat pump coupling hot water system Download PDFInfo
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- CN112628841A CN112628841A CN202011550967.9A CN202011550967A CN112628841A CN 112628841 A CN112628841 A CN 112628841A CN 202011550967 A CN202011550967 A CN 202011550967A CN 112628841 A CN112628841 A CN 112628841A
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- hot water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0036—Domestic hot-water supply systems with combination of different kinds of heating means
- F24D17/0042—Domestic hot-water supply systems with combination of different kinds of heating means recuperated waste heat and solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A solar energy-sewage source heat pump coupling hot water system comprises a solar heat collector, a heat collecting water tank, a hot water supply tank, a sewage source heat pump unit, sewage treatment equipment, a plate heat exchanger, pipelines, a water pump and valves. The solar heat collector is connected with the heat collecting water tank, and the heat supply water tank is connected with the sewage source heat pump unit and the heat collecting water tank. When the solar radiation intensity is strong, the heat of the bathing water is borne by the solar energy; when the solar radiation intensity is strong, a sewage source heat pump system is started to bear a part of bath water heat; when the solar radiation intensity is weak, all heat required by the bathing water needs to be borne by the sewage source heat pump. The invention has the advantages that the advantages of solar energy and a sewage source heat pump can be fully utilized, clean energy is fully utilized, heat recovery can be carried out on sewage generated in a bathroom, waste of heat is avoided to the greatest extent, and environmental protection and energy saving are realized.
Description
Technical Field
The invention relates to a solar energy-sewage source heat pump coupling hot water system, and belongs to the technical field of energy.
Background
The temperature of bathroom water is generally 40-45 ℃, the temperature of waste water generated by the bathroom water can generally reach 30-35 ℃, direct discharge is easy to cause thermal pollution and waste of heat energy, and especially in professional bathrooms, hot springs and universities, the bathroom sewage is concentrated and large in discharge amount, and energy consumption of the bathrooms is not negligible. If the waste water can be treated and the heat can be recovered, the energy consumption can be greatly reduced and the full utilization of resources can be realized. However, if a single sewage source heat pump is used for heating, the hot water supply cannot be satisfied in the case of insufficient sewage. Meanwhile, in the currently adopted sewage source heat pump, sewage is directly discharged after entering the heat pump and subjected to primary heat exchange, and heat in the sewage cannot be well utilized.
Disclosure of Invention
[ problem ] to
The single sewage source heat pump is adopted for heating, the hot water supply can not be met under the condition that the sewage quantity is insufficient, and meanwhile, in the sewage source heat pump, sewage is directly discharged after entering the heat pump and subjected to primary heat exchange, so that the heat in the sewage can not be well utilized.
[ solution ]
The invention aims to provide a solar energy-sewage source heat pump coupling hot water system, which fully utilizes heat in sewage and reduces the temperature of the sewage by circularly exchanging heat for the sewage, and simultaneously utilizes solar energy for heat compensation to fully utilize the solar energy.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a solar energy-sewage source heat pump coupling hot water system comprises a solar heat collector, a heat collecting water tank, a hot water supply tank, a sewage source heat pump unit, sewage treatment equipment, a plate heat exchanger, a water using end and a water supplementing pipeline; the sewage source heat pump unit comprises an evaporator, a compressor, a condenser and a throttle valve; two passages are arranged in the evaporator and the condenser; the first passage of the evaporator, the first passage of the compressor, the first passage of the condenser and the throttle valve are sequentially connected into a loop, the second passage of the evaporator is connected with one side of the plate heat exchanger through a pipeline, and the second passage of the condenser is connected with the hot water supply tank to form a closed loop; the sewage tank, the sewage treatment equipment and the other side of the plate heat exchanger are connected into a loop through pipelines; one side of the heat collection water tank is connected with the solar heat collector through a pipeline to form a closed loop, the other side of the heat collection water tank is provided with a three-way pipeline, the heat collection water tank is connected with the hot water supply tank through a pipeline passage to form a loop, and the heat collection water tank is connected with the sewage pool through another passage; one side of the water using end is connected with a hot water supply tank, and the other side of the water using end is connected with a sewage pool through a pipeline.
Furthermore, the heat collection water tank and the hot water supply tank are layered water tanks, and the number of the layers is 3.
Furthermore, the water supplementing pipeline is connected with a hot water supply tank.
Furthermore, a freezing water pump is installed on a pipeline connecting the plate heat exchanger and the evaporator.
Furthermore, a cooling water pump is arranged on a pipeline connecting the hot water supply tank and the condenser.
Furthermore, a water pump A, an electric regulating valve A and a thermometer A are installed on a pipeline for connecting the heat collecting water tank and the sewage pool.
Furthermore, a heat collection circulating pump is arranged on a pipeline between the solar heat collector and the hot water supply tank; a hot water circulating pump is arranged on a pipeline between the hot water supply tank and the heat collecting water tank; and a sewage pump is arranged on a pipeline connecting the sewage treatment equipment and the plate heat exchanger.
Furthermore, an electric regulating valve B is installed on a pipeline connecting the plate heat exchanger and the sewage tank, and a thermometer B is installed at a position close to the plate heat exchanger.
Furthermore, a liquid level regulating valve is installed on the water replenishing pipeline, and the amount of water replenishing entering is controlled through the liquid level height of the water supply and heating tank.
Furthermore, a hot water supply pump is arranged on a pipeline connecting the hot water supply tank and the water using end.
[ advantageous effects ]
Compared with the prior art, the invention has the following technical effects:
(1) the invention carries out circulating heat exchange on the sewage, can fully utilize the heat in the sewage, simultaneously reduces the temperature of the sewage and can avoid secondary pollution of the high-temperature sewage to the environment.
(2) The solar energy is adopted for heat supplement, so that not only can high-temperature hot water prepared by the solar energy be utilized, but also low-temperature hot water can be utilized, and the clean energy of the solar energy is fully utilized.
(3) The sewage source heat pump unit can be prevented from being blocked by dirt of better pre-sewage water by adopting sewage treatment equipment to treat sewage and exchanging heat through the plate heat exchanger.
(4) Compared with a single air source heat pump and natural gas heat supply, the invention has higher operation efficiency and lower operation cost, and achieves the effects of energy saving and environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of a solar-sewage source heat pump coupled hot water system according to the present invention;
in fig. 1, 1 is a sewage treatment device, 2 is a sewage reservoir, 3 is a plate heat exchanger, 4 is a sewage source heat pump unit, 5 is a throttle valve, 6 is an evaporator, 7 is a compressor, 8 is a condenser, 9 is a hot water supply tank, 10 is a water replenishing pipeline, 11 is a water end, 12 is a heat collecting water tank, 13 is a solar heat collector, 14 is a sewage pump, 15 is a liquid level regulating valve, 16 is a hot water supply pump, 17 is a freezing water pump, 18 is a cooling water pump, 19 is a hot water circulating pump, 20 is a heat collecting circulating pump, 21 is an electric regulating valve B, 22 is an electric regulating valve A, 23 is a thermometer B, 24 is a water pump A, and 25 is a thermometer A.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A solar energy-sewage source heat pump coupling hot water system is characterized by comprising a solar heat collector 13, a heat collection water tank 12, a hot water supply tank 9, a sewage source heat pump unit 4, sewage treatment equipment 1, a plate heat exchanger 3, a water using terminal 11 and a water supplementing pipeline 10; the sewage source heat pump unit 4 comprises an evaporator 6, a compressor 7, a condenser 8 and a throttle valve 5; two passages are arranged in the evaporator 6 and the condenser 8; the first passage of the evaporator 6, the first passage of the compressor 7 and the condenser 8 and the throttle valve 5 are sequentially connected into a loop, the second passage of the evaporator 6 is connected with one side of the plate heat exchanger 3 through a pipeline, and the second passage of the condenser 8 is connected with the hot water supply tank 9 to form a closed loop; the sewage pool 2, the sewage treatment equipment 1 and the other side of the plate type heat exchanger 3 are connected into a loop through pipelines.
One side of the heat collecting water tank 12 is connected with the solar heat collector 13 through a pipeline to form a closed loop, the other side of the heat collecting water tank 12 is provided with a three-way pipeline, the heat collecting water tank 12 is connected with the hot water supply tank 9 through a pipeline passage to form a loop, and the heat collecting water tank 12 is connected with the sewage pool 2 through another passage. The heat collecting water tank 12 and the hot water supply tank 9 are layered water tanks, and the number of layers is 3, so that the heat exchange in the water tanks is prevented better, and the heat supply quality is ensured. The water supply line 10 is connected to the hot water supply tank 9. One side of the water using end 11 is connected with the hot water supply tank 9, and the other side of the water using end 10 is connected with the sewage pool 2 through a pipeline.
The working medium of the sewage source heat pump unit 4 is R22. A freezing water pump 17 is arranged on a pipeline connecting the plate heat exchanger 3 and the evaporator 6. A cooling water pump 18 is installed on a pipeline connecting the hot water supply tank 9 and the condenser 8. A water pump A24, an electric control valve A22 and a thermometer A25 are arranged on a pipeline for connecting the heat collection water tank 12 and the sewage pool 2, and when the sewage amount in the sewage pool is not enough to meet the heat exchange requirement during hot water preparation and the water temperature of the heat collection water tank is measured by the thermometer to exceed 10 ℃, the water pump A24 and the electric control valve A22 are opened.
A heat collecting circulating pump 20 is arranged on a pipeline between the solar heat collector 13 and the hot water supply tank 9. When the temperature difference between the water outlet temperature of the solar heat collector 13 and the water inlet temperature of the solar heat collector 13 is 2 ℃, and the temperature of the top layer of the heat collecting water tank 12 is lower than 80 ℃, the heat collecting circulating pump is started. A hot water circulating pump 19 is arranged on a pipeline between the hot water supply tank 9 and the heat collection water tank 12, the temperature difference between the top layer water temperature of the hot water supply tank 9 and the top layer water temperature of the heat collection water tank 12 is less than 2.5 ℃, and the hot water circulating pump is started when the top layer temperature of the hot water supply tank 9 is less than 45 ℃.
A sewage pump 14 is arranged on a pipeline connecting the sewage treatment device 1 and the plate heat exchanger 3. An electric control valve B21 is arranged on a pipeline connecting the plate heat exchanger 3 and the sewage tank 2, and a thermometer B23 is arranged close to the plate heat exchanger. When the temperature of the sewage after heat exchange in the plate heat exchanger 3 is measured to exceed 10 ℃ by a thermometer B23, an electric regulating valve B21 is opened, otherwise, the sewage is closed, and the sewage is discharged. The water replenishing pipeline 10 is provided with a liquid level regulating valve 15, and the entering amount of the replenished water can be controlled through the liquid level height of the water supply and heating tank 9. A hot water supply pump 16 is arranged on a pipeline connecting the hot water supply tank 9 and the water using tail end 11.
When the solar radiation intensity is strong, the heat of bathing water all day is borne by the solar energy system, and the sewage source heat pump system is closed. A heat collection circulating pump 20 and a hot water circulating pump 19 in the solar system are started to circularly heat the hot water supply tank 9 and the heat collection water tank 12, the hot water supply pump is started to meet the hot water requirement of the water using end 11, and other water pumps are all in a closed state.
When the solar radiation intensity is strong, the heat stored in the solar heat collector 13 can not completely satisfy all heat required by bathing water on the same day, the sewage source heat pump system and the solar energy system are required to be started simultaneously, after the bathing wastewater at the water end 11 flows into the sewage pool 2, the sewage source heat pump system is started, the bathing wastewater sequentially flows through the sewage treatment equipment 1 and the plate heat exchanger 3, heat exchange is carried out between the bathing wastewater and intermediate water in the plate heat exchanger 3, the temperature of the bathing wastewater is reduced, if the temperature is higher than 10 ℃, the bathing wastewater returns to the sewage pool 2, otherwise, the bathing wastewater is discharged, the intermediate water exchanges heat with a working medium in the sewage source heat pump unit 4 again, the working medium continuously obtains heat energy from sewage, so that the working medium is evaporated and gasified, the gasified working medium enters the compressor 7 to be further compressed into high-temperature and high-pressure steam, and the, latent heat is released to heat water in the hot water supply tank 9, and working medium condensate water enters the throttle valve 5 for throttling and cooling and then enters the evaporator 6 for recycling. A cooling water pump 18, a freezing water pump 17 and a sewage pump 14 in the sewage source heat pump system are all required to be started, and a water pump in the solar system is completely started to meet the water supply requirement of the other part of bathing.
When the solar radiation intensity is weak, the heat stored by the solar heat collector 13 can not supply heat to the user, all the heat required by bathing water on the same day is required to be borne by the sewage source heat pump system, the cooling water pump 18, the freezing water pump 17 and the sewage pump 14 in the sewage source heat pump system are started, the heat collection circulating pump 20 in the solar system is started to prepare low-temperature hot water, and when the sewage in the sewage source heat pump system is insufficient, the low-temperature hot water prepared by the solar system is used for supplementing the shortage of the sewage, so that the requirement of the sewage source heat pump on the bathing water supply is met.
Example 2
The invention discloses a solar energy-sewage source heat pump coupling hot water system which is installed in a dormitory of a college in Jiangsu, wherein 1116 students are in total, and the daily average water consumption is 54m3The square meter is selected as a solar heat collector, the area of the square meter is 859, the sewage source heat pump unit is 263Kw, after the system is adopted, the collection temperature of the sewage is 30-32 ℃, the discharge temperature is 10-12 ℃, the heat in the sewage is about 4525.2MJ, the cost for producing 1 ton of hot water by the system is about 2.28 yuan, the cost for producing 1 ton of hot water by a single air source heat pump is about 8.56 yuan, and the coal quantity can be saved by operating the system for one day, so that the system is fully explained to have good energy saving and environmental protection.
The scope of the present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. that can be made by those skilled in the art within the spirit and principle of the inventive concept should be included in the scope of the present invention.
Claims (10)
1. A solar energy-sewage source heat pump coupling hot water system which is characterized in that: the system comprises a solar heat collector, a heat collecting water tank, a hot water supply tank, a sewage source heat pump unit, sewage treatment equipment, a plate heat exchanger, a water using terminal and a water supplementing pipeline; the sewage source heat pump unit comprises an evaporator, a compressor, a condenser and a throttle valve; two passages are arranged in the evaporator and the condenser; the first passage of the evaporator, the first passage of the compressor, the first passage of the condenser and the throttle valve are sequentially connected into a loop, the second passage of the evaporator is connected with one side of the plate heat exchanger through a pipeline, and the second passage of the condenser is connected with the hot water supply tank to form a closed loop; the sewage tank, the sewage treatment equipment and the other side of the plate heat exchanger are connected into a loop through pipelines; one side of the heat collection water tank is connected with the solar heat collector through a pipeline to form a closed loop, the other side of the heat collection water tank is provided with a three-way pipeline, the heat collection water tank is connected with the hot water supply tank through a pipeline passage to form a loop, and the heat collection water tank is connected with the sewage pool through another passage; one side of the water using end is connected with a hot water supply tank, and the other side of the water using end is connected with a sewage pool through a pipeline.
2. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: the heat collection water tank and the hot water supply tank are layered water tanks, and the number of layers is 3.
3. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: the water supplementing pipeline is connected with the hot water supply tank.
4. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: and a freezing water pump is arranged on a pipeline connecting the plate heat exchanger and the evaporator.
5. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: and a cooling water pump is arranged on a pipeline for connecting the hot water supply tank and the condenser.
6. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: and a water pump A, an electric regulating valve A and a thermometer A are arranged on a pipeline for connecting the heat collecting water tank with the sewage pool.
7. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: a heat collection circulating pump is arranged on a pipeline between the solar heat collector and the hot water supply tank; a hot water circulating pump is arranged on a pipeline between the hot water supply tank and the heat collecting water tank; and a sewage pump is arranged on a pipeline connecting the sewage treatment equipment and the plate heat exchanger.
8. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: and an electric regulating valve B is arranged on a pipeline connecting the plate heat exchanger and the sewage tank, and a thermometer B is arranged at a position close to the plate heat exchanger.
9. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: and a liquid level regulating valve is arranged on the water replenishing pipeline, and the amount of water replenishing entering is controlled through the liquid level height of the water supply and heating tank.
10. The solar-sewage source heat pump coupled hot water system of claim 1, wherein: and a hot water supply pump is arranged on a pipeline for connecting the hot water supply tank with the water end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011550967.9A CN112628841A (en) | 2020-12-24 | 2020-12-24 | Solar energy-sewage source heat pump coupling hot water system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011550967.9A CN112628841A (en) | 2020-12-24 | 2020-12-24 | Solar energy-sewage source heat pump coupling hot water system |
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| CN112628841A true CN112628841A (en) | 2021-04-09 |
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| CN202011550967.9A Pending CN112628841A (en) | 2020-12-24 | 2020-12-24 | Solar energy-sewage source heat pump coupling hot water system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561493U (en) * | 2009-10-29 | 2010-08-25 | 重庆大学 | Solar energy heat pump composite hot water system for bathroom |
| CN201662157U (en) * | 2009-10-29 | 2010-12-01 | 重庆大学 | Heat pump hot water system of bathroom |
| KR20110110914A (en) * | 2010-04-02 | 2011-10-10 | 이승식 | Waste heat recycle apparatus for solar thermal system |
| NL2006599C2 (en) * | 2011-04-14 | 2012-10-16 | Christeyns N V | SYSTEM AND METHOD FOR HEATING PROCESS MEDIUM TO BE USED IN A TEXTILE LAUNDRY. |
| US20170241649A1 (en) * | 2016-02-03 | 2017-08-24 | Piers St John Spencer Cave | Heat storing and heat transfer systems |
| CN109579557A (en) * | 2018-10-24 | 2019-04-05 | 上海联创设计集团股份有限公司 | Build steam condensate recycling system and its method |
| CN210345928U (en) * | 2019-08-05 | 2020-04-17 | 江南大学 | Bathroom hot water supply system of solar energy coupling sewage source heat pump |
| CN213931511U (en) * | 2020-12-24 | 2021-08-10 | 江南大学 | Solar water heating system is assisted to sewage source heat pump |
-
2020
- 2020-12-24 CN CN202011550967.9A patent/CN112628841A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561493U (en) * | 2009-10-29 | 2010-08-25 | 重庆大学 | Solar energy heat pump composite hot water system for bathroom |
| CN201662157U (en) * | 2009-10-29 | 2010-12-01 | 重庆大学 | Heat pump hot water system of bathroom |
| KR20110110914A (en) * | 2010-04-02 | 2011-10-10 | 이승식 | Waste heat recycle apparatus for solar thermal system |
| NL2006599C2 (en) * | 2011-04-14 | 2012-10-16 | Christeyns N V | SYSTEM AND METHOD FOR HEATING PROCESS MEDIUM TO BE USED IN A TEXTILE LAUNDRY. |
| US20170241649A1 (en) * | 2016-02-03 | 2017-08-24 | Piers St John Spencer Cave | Heat storing and heat transfer systems |
| CN109579557A (en) * | 2018-10-24 | 2019-04-05 | 上海联创设计集团股份有限公司 | Build steam condensate recycling system and its method |
| CN210345928U (en) * | 2019-08-05 | 2020-04-17 | 江南大学 | Bathroom hot water supply system of solar energy coupling sewage source heat pump |
| CN213931511U (en) * | 2020-12-24 | 2021-08-10 | 江南大学 | Solar water heating system is assisted to sewage source heat pump |
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Application publication date: 20210409 |