CN115773551A - Heating or cooling system with coupling of renewable energy and heat supply network and operation method - Google Patents
Heating or cooling system with coupling of renewable energy and heat supply network and operation method Download PDFInfo
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- CN115773551A CN115773551A CN202211668804.XA CN202211668804A CN115773551A CN 115773551 A CN115773551 A CN 115773551A CN 202211668804 A CN202211668804 A CN 202211668804A CN 115773551 A CN115773551 A CN 115773551A
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B10/40—Geothermal heat-pumps
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Abstract
The invention discloses a heating or cooling system with coupling of renewable energy and a heat supply network and an operation method thereof.
Description
Technical Field
The invention belongs to the technical field of energy sources, and particularly relates to a heating or cooling system with coupling of renewable energy sources and a heat supply network and an operation method.
Background
The geothermal energy is heat energy stored in the earth, the air energy is low-grade heat energy stored in the air, and the solar energy belongs to clean, low-carbon, widely distributed, rich-resource, safe and high-quality renewable energy. The heat pump technology is utilized to fully extract low-grade shallow geothermal energy and air energy, heat is taken in winter and heat is discharged in summer, and the effects of heating in winter and cooling in summer are achieved, so that the soil source heat pump and the air source heat pump are both economic, efficient and energy-saving renewable energy utilization devices.
Along with the improvement of the quality of life of people, the demand of resident central heating is more and more strong, and some buildings such as high-end residence, business, hospital have multiple demands such as heating and cooling more, however along with thermal power installation contracts, traditional central heating's heating capacity is saturated day by day, need to solve heating or cooling civilian demand through renewable energy expansion existing heating capacity urgent.
The traditional centralized heat supply network has the advantages that: low cost, high quality, mature technology, stability, reliability and the like, and has the defect of poor flexibility; for concentrated heat supply network, distributed renewable energy supply cost is higher, energy supply quality and operating stability are weaker, and the advantage is: the operation is flexible and the cold and hot dual supply can be realized. The two energy supply forms have advantages and disadvantages, and how to couple the renewable energy source with the traditional centralized heating network to realize heating or cooling becomes a practical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a heating or cooling system with renewable energy coupled to a heat supply network and an operation method thereof
The specific scheme is as follows:
the heating or cooling system comprises a water supply pipeline, a water return pipeline, a constant-pressure water supplementing unit, a soil source heat pump unit, an air source heat pump unit and a centralized heat supply pipeline network, wherein a heat exchange input end and a heat exchange output end are arranged on the soil source heat pump unit, the air source heat pump unit and the centralized heat supply pipeline network, the heat exchange output end of the soil source heat pump unit, the heat exchange output end of the air source heat pump unit and the heat exchange output end of the centralized heat supply pipeline network are connected with the water supply pipeline, the heat exchange input end of the soil source heat pump unit, the heat exchange input end of the air source heat pump unit and the heat exchange input end of the centralized heat supply pipeline network are connected with the water return pipeline, the water return pipeline is connected with the constant-pressure water supplementing unit through a pipeline, and the constant-pressure water supplementing unit is connected with the soil source heat pump unit through a pipeline.
The soil source heat pump unit comprises a soil source heat pump, a buried pipe, a water collector, a water separator, a water treatment device and a first circulating pump, wherein the soil source heat pump is connected with the water separator through a heat exchange output end, the water separator is connected with the buried pipe through a pipeline, the buried pipe is connected with the water collector through a pipeline, the water collector is connected with a heat exchange input end of the soil source heat pump through the water treatment device and the first circulating pump through a pipeline, a switching main valve is arranged on a heat exchange input end of the soil source heat pump unit, and the soil source heat pump unit is connected with a water return pipeline through the switching main valve.
The soil source heat pump unit comprises a soil source heat pump unit and is characterized in that a heat exchange input end of the soil source heat pump unit comprises a heat exchange input first end and a heat exchange input second end, a first switching valve and a second switching valve are arranged on the heat exchange input first end, the heat exchange input first end is connected with a first circulating pump pipeline through the first switching valve, the heat exchange input first end is further connected with a switching main valve pipeline through the second switching valve, a third switching valve and a fourth switching valve are arranged on the heat exchange input second end, the heat exchange input second end is connected with the first circulating pump pipeline through the third switching valve, and the heat exchange input second end is connected with the switching main valve pipeline through the fourth switching valve.
An evaporator and a condenser are arranged in the soil source heat pump, the evaporator is connected with a first end pipeline of the heat exchange input, and the condenser is connected with a second end pipeline of the heat exchange input.
The heat exchange output end of the soil source heat pump unit comprises a first heat exchange output end and a second heat exchange output end, the evaporator is connected with a first heat exchange output end through a pipeline, a fifth switching valve and a sixth switching valve are arranged on the first heat exchange output end, the first heat exchange output end is connected with the water distributor through a fifth switching valve through a pipeline, the first heat exchange output end is connected with the water supply pipeline through a sixth switching valve, the condenser is connected with a second heat exchange output end through a pipeline, a seventh switching valve and an eighth switching valve are arranged on the second heat exchange output end, the second heat exchange output end is connected with the water distributor through a seventh switching valve, and the second heat exchange output end is connected with the water supply pipeline through an eighth switching valve.
The air source heat pump unit comprises an air source heat pump, the air source heat pump is connected with a water return pipeline through the ninth switching valve, and the air source heat pump is further connected with a water supply pipeline through the tenth switching valve.
The heat exchange input end of the centralized heat supply pipe network is provided with an eleventh switching valve, the heat exchange output end of the centralized heat supply pipe network is provided with a twelfth switching valve, the centralized heat supply pipe network comprises a heat supply input pipe, a heat supply output pipe and a heat exchanger, one end of the heat exchanger is respectively connected with the heat supply input pipe and the heat supply output pipe, the other end of the heat exchanger is connected with a water return pipeline through the eleventh switching valve, and the other end of the heat exchanger is further connected with a water supply pipeline through the twelfth switching valve.
And a thirteenth switching valve is further arranged between the heat exchange output end of the air source heat pump unit and the heat exchange input end of the centralized heat supply pipe network, and the heat exchange output end of the air source heat pump unit is further connected with the heat exchange input end of the centralized heat supply pipe network through a pipeline of the thirteenth switching valve.
The constant-pressure water supplementing unit comprises a water softening processor, a filter, a buried pipe constant-pressure water supplementing device and a return water pipeline constant-pressure water supplementing device, the water softening processor is connected with a filter pipeline, the filter is connected with a soil source heat pump unit pipeline through the buried pipe constant-pressure water supplementing device, the filter is connected with the return water pipeline through the return water pipeline constant-pressure water supplementing device, a second circulating pump and a water treatment instrument are further arranged on the return water pipeline, and the return water pipeline is connected with a heat exchange output end of the soil source heat pump unit, a heat exchange output end of the air source heat pump unit and a heat exchange output end pipeline of the centralized heat supply pipeline through the second circulating pump and the water treatment instrument respectively.
According to the operation method of the heating or cooling system with the coupling of renewable energy sources and a heat supply network, return water in a return water pipeline is softened by a water treatment device and pressurized by a second circulating pump and then respectively exchanges heat with a soil source heat pump unit, an air source heat pump unit and a centralized heating pipe network unit, water after heat exchange enters a water supply pipeline, and the heat exchange comprises heating heat exchange or cooling heat exchange.
The invention discloses a heating or cooling system with coupling of renewable energy and a heat supply network and an operation method thereof, wherein the system can realize double supply of cold and heat, and the heat load is greater than the cold load, so that the centralized cooling demand of part of high-end users can be realized in a centralized heating area; in an extremely cold period, the heat supply capacity of the soil source heat pump, especially the air source heat pump is reduced, and the heat supply temperature can be increased by secondary heating through the heat supply network heat exchanger, so that the heat supply quality is ensured, and the energy supply stability is improved; when the heat supply network fails or the heat supply output is insufficient, the air source heat pump and the soil heat pump can independently operate, so that the safety of energy supply is improved; flexible adjustment and improved energy supply economy.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the implementations of the present invention, and not all implementations, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any inventive work are within the scope of the present invention.
As shown in fig. 1, a heating or cooling system with renewable energy coupled with a heat supply network comprises a water supply pipeline 15, a water return pipeline 14, a constant pressure water replenishing unit, a soil source heat pump unit, an air source heat pump unit and a centralized heat supply pipeline network, wherein the soil source heat pump unit, the air source heat pump unit and the centralized heat supply pipeline network are all provided with a heat exchange input end and a heat exchange output end, the heat exchange output end of the soil source heat pump unit, the heat exchange output end of the air source heat pump unit and the heat exchange output end of the centralized heat supply pipeline network are all connected with the water supply pipeline 15, the heat exchange input end of the soil source heat pump unit, the heat exchange input end of the air source heat pump unit and the heat exchange input end of the centralized heat supply pipeline network are all connected with the water return pipeline 14, the water return pipeline 14 is connected with the constant pressure water replenishing unit, and the constant pressure water replenishing unit is connected with the soil source heat pump unit.
During heating, the temperature of the return water in the return water pipeline 14 is lower, the temperature of the return water is increased after the return water in the return water pipeline 14 exchanges heat with the soil source heat pump unit, the air source heat pump unit and the centralized heat supply pipe network respectively, and the high-temperature return water is used for heating again through the water supply pipeline 15;
during cooling, the return water in the return water pipeline 14 is the return water with higher temperature, the return water in the return water pipeline 14 exchanges heat with the soil source heat pump unit and the air source heat pump unit respectively, the temperature of the return water is reduced after heat exchange, and the return water with low temperature supplies the cooling again through the water supply pipeline 15.
The soil source heat pump unit comprises a soil source heat pump 20, a buried pipe 28, a water collector 29, a water separator 27, a water treatment device 30 and a first circulating pump 31, wherein the soil source heat pump 20 is connected with the water separator 27 through a heat exchange output end, the water separator 27 is connected with the buried pipe 28 through a pipeline, the buried pipe 28 is connected with the water collector 29 through a pipeline, the water collector 29 is connected with a heat exchange input end of the soil source heat pump through the water treatment device 30 and the first circulating pump 31 through a pipeline, a switching main valve 35 is arranged on a heat exchange input end of the soil source heat pump unit, and the soil source heat pump unit is connected with the water return pipeline 14 through the switching main valve 35.
The heat exchange input end of the soil source heat pump unit comprises a heat exchange input first end 25 and a heat exchange input second end 26, a first switching valve 1 and a second switching valve 2 are arranged on the heat exchange input first end 25, the heat exchange input first end 25 is connected with the first circulating pump 31 through the first switching valve 1 in a pipeline mode, the heat exchange input first end 25 is further connected with a switching main valve 35 through the second switching valve 2 in a pipeline mode, a third switching valve 3 and a fourth switching valve 4 are arranged on the heat exchange input second end 26, the heat exchange input second end 26 is connected with the first circulating pump 31 through the third switching valve 3 in a pipeline mode, and the heat exchange input second end 26 is connected with the switching main valve 35 through the fourth switching valve 4 in a pipeline mode.
An evaporator 21 and a condenser 22 are arranged in the soil source heat pump 20, the evaporator 21 is connected with a heat exchange input first end 25 through a pipeline, and the condenser 22 is connected with a heat exchange input second end 26 through a pipeline.
The heat exchange output end of the soil source heat pump unit comprises a heat exchange output first end 23 and a heat exchange output second end 24, the evaporator 21 is connected with the heat exchange output first end 23 through a pipeline, a fifth switching valve 5 and a sixth switching valve 6 are arranged on the heat exchange output first end 23, the heat exchange output first end 23 is connected with the water distributor 27 through the fifth switching valve 5, the heat exchange output first end 23 is connected with the water supply pipeline 15 through the sixth switching valve 6, the condenser 22 is connected with the heat exchange output second end 24 through a pipeline, a seventh switching valve 7 and an eighth switching valve 8 are arranged on the heat exchange output second end 24, the heat exchange output second end 24 is connected with the water distributor 27 through the seventh switching valve 7, and the heat exchange output second end 24 is connected with the water supply pipeline 15 through the eighth switching valve 8.
A ninth switching valve 9 is arranged on a heat exchange input end of the air source heat pump unit, a tenth switching valve 10 is arranged on a heat exchange output end of the air source heat pump unit, the air source heat pump unit comprises an air source heat pump 19, the air source heat pump 19 is connected with a water return pipeline 14 through the ninth switching valve 9, and the air source heat pump 19 is further connected with a water supply pipeline 15 through the tenth switching valve 10.
The heat exchange input end of the centralized heating pipe network is provided with an eleventh switching valve 11, the heat exchange output end of the centralized heating pipe network is provided with a twelfth switching valve 12, the centralized heating pipe network comprises a heat supply input pipe 17, a heat supply output pipe 18 and a heat exchanger 16, one end of the heat exchanger 16 is respectively connected with the heat supply input pipe 17 and the heat supply output pipe 18, the other end of the heat exchanger 16 is connected with a water return pipeline 14 through the eleventh switching valve 11, and the other end of the heat exchanger 16 is further connected with a water supply pipeline 15 through the twelfth switching valve 12.
A thirteenth switching valve 13 is further arranged between the heat exchange output end of the air source heat pump unit and the heat exchange input end of the centralized heat supply pipe network, and the heat exchange output end of the air source heat pump unit is further connected with the heat exchange input end of the centralized heat supply pipe network through the thirteenth switching valve 13.
The constant-pressure water supplementing unit comprises a soft water processor 34, a filter 33, a buried pipe constant-pressure water supplementing device 32 and a return water pipeline constant-pressure water supplementing device 36, the soft water processor 34 is in pipeline connection with the filter 33, the filter 33 is in pipeline connection with the soil source heat pump unit through the buried pipe constant-pressure water supplementing device 32, the filter 33 is further in pipeline connection with the return water pipeline 14 through the return water pipeline constant-pressure water supplementing device 36, a second circulating pump 38 and a water treatment instrument 37 are further arranged on the return water pipeline 14, and the return water pipeline 14 is in pipeline connection with the heat exchange output end of the soil source heat pump unit, the heat exchange output end of the air source heat pump unit and the heat exchange output end of the centralized heat supply pipe network through the second circulating pump 38 and the water treatment instrument 37 respectively.
In the operation method of heating or cooling by coupling renewable energy sources and a heat supply network, backwater in a backwater pipeline 14 is softened by a water treatment device 37 and pressurized by a second circulating pump 38, and then respectively exchanges heat with a soil source heat pump unit, an air source heat pump unit and a centralized heat supply network unit, and the water after heat exchange enters a water supply pipeline 15, wherein the heat exchange comprises heating heat exchange or cooling heat exchange.
The specific working process of the heating or cooling system with the coupling of the renewable energy source and the heat supply network is as follows:
as shown in fig. 1, in the heating season, for the soil source heat pump unit, it is necessary to manually open the switching master valve 35, the first switching valve 1, the fourth switching valve 4, the fifth switching valve 5, and the eighth switching valve 8, while closing the second switching valve 2, the third switching valve 3, the sixth switching valve 6, and the seventh switching valve 7;
at this time, the low-temperature backwater in the backwater pipeline 14 enters the condenser 22 in the soil source heat pump 20 through the switching main valve 35 and the fourth switching valve 4, the low-temperature backwater exchanges heat with the condenser 22, the temperature of the backwater after heat exchange is increased, and the heated backwater enters the water supply pipeline 15 through the eighth switching valve 8 to supply heat again;
the temperature of the water in the condenser 22 after heat exchange is decreased, and at this time, the condenser 22 absorbs heat through the evaporator 21, and the circulating water in the evaporator 21 absorbs heat from the buried pipe 28 through the fifth switching valve 5, absorbs heat from the buried pipe 28, and then flows into the evaporator 21 again through the first circulating pump 31 and the first switching valve 1 to prepare for the next heat exchange cycle.
For the air source heat pump unit, the ninth switching valve 9 and the tenth switching valve 10 need to be opened manually, a part of backwater in the backwater pipeline 14 enters the air source heat pump 19 through the ninth switching valve 9 to be heated to the water supply temperature, and the heated water enters the water supply pipeline 15 through the tenth switching valve 10 to supply heat again;
for a centralized heat supply pipe network, manually opening an eleventh switching valve 11 and a twelfth switching valve 12, enabling return water in a return water pipeline 14 to enter a heat exchange device 16 through the eleventh switching valve 11 to exchange heat with the heat supply pipe network, increasing the temperature of the return water after heat exchange, and enabling the heated water to enter a water supply pipeline 15 through the twelfth switching valve 12 to supply heat again;
the soil source heat pump unit, the air source heat pump unit and the centralized heat supply pipeline network system can operate independently and can also operate in series and parallel, and the operation modes are flexible and complementary.
If only the operation of the soil source heat pump unit is required, the switching master valve 35 is opened, and the ninth switching valve 9, the tenth switching valve 10, the eleventh switching valve 11, the twelfth switching valve 12 and the thirteenth switching valve 13 are closed;
if only the air source heat pump unit needs to be operated, the ninth switching valve 9 and the tenth switching valve 10 are opened, and the switching main valve 35, the eleventh switching valve 11, the twelfth switching valve 12 and the thirteenth switching valve 13 are all closed;
if only the central heating pipe network needs to operate, the eleventh switching valve 11 and the twelfth switching valve 12 are opened, and the switching main valve 35, the ninth switching valve 9, the tenth switching valve 10 and the thirteenth switching valve 13 are all closed;
the serial-parallel connection switching among the soil source heat pump unit, the air source heat pump unit and the centralized heat supply pipe network can be realized through the thirteenth switching valve 13; when the efficiency of the air source heat pump unit is reduced in an extremely cold period and the heating temperature does not reach the standard, at the moment, the thirteenth switching valve 13 is opened, and water heated by the soil source heat pump unit and the air source heat pump unit can enter the centralized heating pipe network through the thirteenth switching valve 13 to perform secondary heat exchange.
In the daytime and at the peak electricity price, the comparison condition of the heating operation cost is that the ground source heat pump < the centralized heat supply network < the air source heat pump; when the electricity price is at the valley value at night, the operation cost is compared with the situation that the ground source heat pump is smaller than the air source heat pump and the centralized heat supply network.
The operation mode can be flexibly adjusted according to various aspects such as heating operation cost, equipment efficiency, heat supply capacity of a heat supply network and the like, the heat supply capacity of a centralized heat supply network is sufficient in the initial stage and the final stage of heating, a soil source heat pump and the centralized heat supply network are preferentially operated, and an air source heat pump is used as a supplementary heat source; when the central heating network is extremely cold in the middle heating period, the central heating network has insufficient heating capacity, the soil source heat pump and the ultralow temperature air source heat pump are preferentially operated, and the central heating network is used as a supplementary heat source and a standby heat source.
In the cold supply season, the central heating pipe network stops running, only the soil source heat pump unit and the air source heat pump unit run,
during cooling, for the soil source heat pump unit, the switching main valve 35, the second switching valve 2, the third switching valve 3, the sixth switching valve 6 and the seventh switching valve 7 are opened, the first switching valve 1, the fourth switching valve 4, the fifth switching valve 5 and the eighth switching valve 8 are closed, return water in the water return pipeline 14 enters the evaporator 21 in the soil source heat pump 20 through the second switching valve 2 for heat exchange, the temperature of the return water is reduced after heat exchange, and low-temperature return water enters the water supply pipeline 15 through the sixth switching valve 6 for cooling again;
after heat exchange, the water temperature of the evaporator 21 rises, at this time, the evaporator 21 dissipates heat through the condenser 22, after the condenser 22 receives heat in the evaporator 21, the temperature of circulating water in the condenser 22 rises, at this time, the circulating water in the condenser 22 enters the buried pipe 28 through the seventh switching valve 7 and dissipates heat in the buried pipe 28, and the circulating water after heat dissipation flows into the condenser 22 again through the first circulating pump 31 and the third switching valve 3 to prepare for the next heat exchange cycle.
During cooling, for the air source heat pump unit, the ninth switching valve 9 and the tenth switching valve 10 are manually opened, a part of the return water in the return water pipeline 14 enters the air source heat pump 19 through the ninth switching valve 9 to be cooled to the water supply temperature, and the cooled water enters the water supply pipeline 15 through the tenth switching valve 10 to be cooled again.
During heating or cooling, the constant pressure water replenishing unit may replenish water for the ground source heat pump unit and the recovery pipeline 14.
The heating or cooling system with the shell renewable energy source coupled with the heat supply network realizes the coupling of the distributed renewable energy source energy supply system and the centralized heat supply network system, and improves the safety, stability and flexibility of the energy supply of the comprehensive energy source system.
The technical means disclosed in the scheme of the invention are not limited to the technical means disclosed in the above embodiments, but also include the technical means formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (10)
1. A heating or cooling system with renewable energy coupled to a heat grid, comprising: the ground source heat pump unit, the air source heat pump unit and the centralized heat supply pipe network are all provided with a heat exchange input end and a heat exchange output end, the heat exchange output end of the ground source heat pump unit, the heat exchange output end of the air source heat pump unit and the heat exchange output end of the centralized heat supply pipe network are all connected with the water supply pipeline (15), the heat exchange input end of the ground source heat pump unit, the heat exchange input end of the air source heat pump unit and the heat exchange input end of the centralized heat supply pipe network are all connected with the water return pipeline (14), the water return pipeline (14) is connected with a constant pressure water supply unit pipeline, and the constant pressure water supply unit is connected with the ground source heat pump unit pipeline.
2. The renewable energy and heat grid coupled heating or cooling system of claim 1, wherein: the ground source heat pump unit comprises a ground source heat pump (20), a buried pipe (28), a water collector (29), a water distributor (27), a water treatment device (30) and a first circulating pump (31), wherein the ground source heat pump (20) is in pipeline connection with the water distributor (27) through a heat exchange output end, the water distributor (27) is in pipeline connection with the buried pipe (28), the buried pipe (28) is in pipeline connection with the water collector (29), the water collector (29) is in pipeline connection with a heat exchange input end of the ground source heat pump through the water treatment device (30) and the first circulating pump (31), a switching main valve (35) is arranged on a heat exchange input end of the ground source heat pump unit, and the ground source heat pump unit is connected with the water return pipeline (14) through the switching main valve (35).
3. The renewable energy and heat grid coupled heating or cooling system of claim 2, wherein: the heat exchange input end of the soil source heat pump unit comprises a first heat exchange input end (25) and a second heat exchange input end (26), a first switching valve (1) and a second switching valve (2) are arranged on the first heat exchange input end (25), the first heat exchange input end (25) is connected with a first circulating pump (31) through the first switching valve (1) in a pipeline mode, the first heat exchange input end (25) is further connected with a switching main valve (35) through the second switching valve (2) in a pipeline mode, a third switching valve (3) and a fourth switching valve (4) are arranged on the second heat exchange input end (26), the second heat exchange input end (26) is connected with the first circulating pump (31) through the third switching valve (3) in a pipeline mode, and the second heat exchange input end (26) is connected with the switching main valve (35) through the fourth switching valve (4) in a pipeline mode.
4. The heating or cooling system of claim 3 wherein the renewable energy source is coupled to a heat grid, wherein: an evaporator (21) and a condenser (22) are arranged in the soil source heat pump (20), the evaporator (21) is connected with a heat exchange input first end (25) through a pipeline, and the condenser (22) is connected with a heat exchange input second end (26) through a pipeline.
5. The heating or cooling system of claim 4 wherein the renewable energy source is coupled to a heat grid, wherein: the soil source heat pump unit is characterized in that a heat exchange output end of the soil source heat pump unit comprises a first heat exchange output end (23) and a second heat exchange output end (24), the evaporator (21) is connected with the first heat exchange output end (23) through a pipeline, a fifth switching valve (5) and a sixth switching valve (6) are arranged on the first heat exchange output end (23), the first heat exchange output end (23) is connected with the water distributor (27) through the fifth switching valve (5) through a pipeline, the first heat exchange output end (23) is connected with the water supply pipeline (15) through the sixth switching valve (6), the condenser (22) is connected with the second heat exchange output end (24) through a pipeline, a seventh switching valve (7) and an eighth switching valve (8) are arranged on the second heat exchange output end (24), the second heat exchange output end (24) is connected with the water supply pipeline (15) through the seventh switching valve (7) and the water supply pipeline (15) through the eighth switching valve (8).
6. The renewable energy and heat grid coupled heating or cooling system of claim 1, wherein: the air source heat pump unit is characterized in that a ninth switching valve (9) is arranged on a heat exchange input end of the air source heat pump unit, a tenth switching valve (10) is arranged on a heat exchange output end of the air source heat pump unit, the air source heat pump unit comprises an air source heat pump (19), the air source heat pump (19) is connected with a water return pipeline (14) through the ninth switching valve (9), and the air source heat pump (19) is further connected with a water supply pipeline (15) through the tenth switching valve (10).
7. The renewable energy and heat grid coupled heating or cooling system of claim 1, wherein: an eleventh switching valve (11) is arranged at the heat exchange input end of the centralized heat supply pipe network, a twelfth switching valve (12) is arranged at the heat exchange output end of the centralized heat supply pipe network, the centralized heat supply pipe network comprises a heat supply input pipe (17), a heat supply output pipe (18) and a heat exchanger (16), one end of the heat exchanger (16) is connected with the heat supply input pipe (17) and the heat supply output pipe (18) respectively, the other end of the heat exchanger (16) is connected with a water return pipeline (14) through the eleventh switching valve (11), and the other end of the heat exchanger (16) is further connected with a water supply pipeline (15) through the twelfth switching valve (12).
8. The heating or cooling system of claim 1 wherein the renewable energy source is coupled to a heat grid, wherein: a thirteenth switching valve (13) is further arranged between the heat exchange output end of the air source heat pump unit and the heat exchange input end of the centralized heat supply pipe network, and the heat exchange output end of the air source heat pump unit is further connected with the heat exchange input end of the centralized heat supply pipe network through the thirteenth switching valve (13).
9. The heating or cooling system of claim 1 wherein the renewable energy source is coupled to a heat grid, wherein: the constant-pressure water supplementing unit comprises a water softening processor (34), a filter (33), a buried pipe constant-pressure water supplementing device (32) and a water return pipeline constant-pressure water supplementing device (36), the water softening processor (34) is connected with the filter (33) through a pipeline, the filter (33) is connected with a soil source heat pump unit through the buried pipe constant-pressure water supplementing device (32), the filter (33) is further connected with a water return pipeline (14) through the water return pipeline constant-pressure water supplementing device (36), a second circulating pump (38) and a water treatment instrument (37) are further arranged on the water return pipeline (14), and the water return pipeline (14) is respectively connected with a heat exchange output end of the soil source heat pump unit, a heat exchange output end of the air source heat pump unit and a heat exchange output end of a centralized heat supply pipe network through the second circulating pump (38) and the water treatment instrument (37).
10. Method for operating a heating or cooling system with coupling of renewable energy sources to a heat network according to any of claims 1 to 9, characterized in that: backwater in the backwater pipeline (14) is softened by a water treatment instrument (37) device and pressurized by a second circulating pump (38) and then respectively exchanges heat with a soil source heat pump unit, an air source heat pump unit and a centralized heating pipe network unit, water after heat exchange enters a water supply pipeline (15), and the heat exchange comprises heating heat exchange or cooling heat exchange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211668804.XA CN115773551A (en) | 2022-12-24 | 2022-12-24 | Heating or cooling system with coupling of renewable energy and heat supply network and operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211668804.XA CN115773551A (en) | 2022-12-24 | 2022-12-24 | Heating or cooling system with coupling of renewable energy and heat supply network and operation method |
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| CN115773551A true CN115773551A (en) | 2023-03-10 |
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| CN202211668804.XA Pending CN115773551A (en) | 2022-12-24 | 2022-12-24 | Heating or cooling system with coupling of renewable energy and heat supply network and operation method |
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2022
- 2022-12-24 CN CN202211668804.XA patent/CN115773551A/en active Pending
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