CN219607272U - Water source heat pump air conditioner circulation system - Google Patents
Water source heat pump air conditioner circulation system Download PDFInfo
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- CN219607272U CN219607272U CN202320873819.3U CN202320873819U CN219607272U CN 219607272 U CN219607272 U CN 219607272U CN 202320873819 U CN202320873819 U CN 202320873819U CN 219607272 U CN219607272 U CN 219607272U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 295
- 238000004378 air conditioning Methods 0.000 claims abstract description 131
- 239000000498 cooling water Substances 0.000 claims abstract description 72
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000010865 sewage Substances 0.000 claims description 35
- 239000002351 wastewater Substances 0.000 claims 1
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Abstract
The utility model belongs to the field of air conditioning circulating systems, and particularly relates to a water source heat pump air conditioning circulating system, which comprises a water source part, a circulating part and an air conditioning part; the water source part comprises a cooling water supply port for providing cooling water supply and a cooling water return port for receiving cooling water return; the air conditioning part comprises an air conditioning water supply port for receiving air conditioning water supply and an air conditioning water return port for discharging air conditioning backwater; the circulating part comprises a water source heat pump, and the water source heat pump comprises an evaporator and a condenser; the water inlets and the water outlets of the evaporator and the condenser are respectively connected with a cooling water supply and return port and an air conditioner water supply and return port and are controlled by respective switching valves; the parts, the water gaps and the switching valves are connected through pipelines. The utility model is mainly used for implementing the technology of cooling by using the floor radiant coil on the basis of the existing floor radiant heating system. The utility model has the beneficial effects of saving energy, reducing consumption, improving comfort and the like.
Description
Technical Field
The utility model belongs to the field of air conditioning circulating systems, and particularly relates to a water source heat pump air conditioning circulating system.
Background
The water source heat pump system belongs to one kind of ground source heat pump system, and heating system mainly falls into three parts: an outdoor heat source heat exchange system, a heat pump machine room and an indoor heating terminal system. At present, the ground source heat pump system has been widely used, and a plurality of large-scale working examples exist, in particular, a ground source heat pump system, an underground water source heat pump system, reclaimed water, a sewage source heat pump system and the like. Especially, most projects are single heat pump heating systems, and the long-term use of the underground water source heat pump and the soil source heat pump heating systems can influence the use effect.
In the existing heat pump concentrated heating system using a water source as a heat source, the water source heats through the mechanical work of a heat pump in winter, and is used for a winter floor radiant heating system. In the residential area floor radiation central heating system, the floor radiation refrigeration is not considered, so that the water source is not utilized in summer, the area is not subjected to central refrigeration, the household small air conditioner is adopted by general users for refrigeration in summer, the air cooling air conditioner has low refrigeration efficiency and high energy consumption, a new design process technology is required, the winter floor radiation heating coil equipment is utilized for refrigeration in summer as a part of indoor refrigeration, the original heating water source heat pump is adopted for central refrigeration by the cold source, and the original water source is utilized by the cooling water.
Disclosure of Invention
In order to solve the defects existing in the prior art, the utility model provides a water source heat pump air conditioner circulating system, which comprises a water source part, a circulating part and an air conditioner part; the water source part comprises a cooling water supply port (I1) for providing cooling water supply and a cooling water return port (O1) for receiving cooling water return; the air conditioning part comprises an air conditioning water supply port (O2) for receiving air conditioning water supply and an air conditioning water return port (I2) for discharging air conditioning water return; the circulating part comprises a water source heat pump, and the water source heat pump comprises an evaporator and a condenser; the evaporator water inlet (C1) is respectively connected with the cooling water supply port (I1) and the air conditioner water return port (I2), and the evaporator water outlet (C2) is respectively connected with the cooling water return port (O1) and the air conditioner water supply port (O2); the condenser water inlet (C3) is respectively connected with the cooling water supply port (I1) and the air conditioner recovery port (I2), and the condenser water outlet (C4) is respectively connected with the cooling water return port (O1) and the air conditioner water supply port (O2); a first switching valve (V1) is arranged between an evaporator water inlet (C1) and a cooling water supply port (I1), a fourth switching valve (V4) is arranged between the evaporator water inlet (C1) and an air conditioner water return port (I2), a fifth switching valve (V5) is arranged between the evaporator water outlet (C2) and the cooling water return port (O1), an eighth switching valve (V8) is arranged between the evaporator water outlet (C2) and the air conditioner water supply port (O2), a second switching valve (V2) is arranged between the condenser water inlet (C3) and the cooling water supply port (I1), a third switching valve (V3) is arranged between the condenser water inlet (C3) and the air conditioner water return port (I2), a sixth switching valve (V6) is arranged between the condenser water outlet (C4) and the air conditioner water return port (O2), and the above parts, the water inlets and the switching valves are connected through pipelines.
Further, the water source part comprises a sewage heat exchanger and a sewage lifting pump, the sewage heat exchanger comprises two groups of water inlet and outlet passages, and the two groups of water inlet and outlet passages can exchange heat with each other.
Further, the sewage heat exchanger is plural.
Further, the air conditioning part comprises a water collector, a water separator and external air conditioning equipment, wherein the water collector, the water separator and the external air conditioning equipment are respectively provided with a water inlet and a water outlet.
Preferably, the external air conditioning device is a floor radiant tube.
Preferably, the external air conditioning device is a fan coil.
Further, a cooling water pump is additionally arranged on the pipeline at one side of the near end of the cooling water supply port (I1).
Further, an air conditioner water pump is additionally arranged on the pipeline at one side of the near end of the air conditioner water return port (I2).
In combination with the above technical solution and the technical problems to be solved, please analyze the following aspects to provide the following advantages and positive effects:
first, aiming at the technical problems in the prior art and the difficulty in solving the problems, the technical problems solved by the technical proposal of the utility model are analyzed in detail and deeply by tightly combining the technical proposal to be protected, the results and data in the research and development process, and the like, and some technical effects brought after the problems are solved have creative technical effects. The specific description is as follows:
the technical embodiment of the utility model is to reform and utilize the original sewage source heat pump system on the basis of heating, and solve the concentrated refrigeration in summer in the area by reforming a single heat supply system of the heat pump, and the technical problems to be solved when the scheme is realized are as follows:
1) The refrigerating capacity of an actual user indoor floor radiant tube is simulated and calculated, a user cold load database is built, and the cold load requirement of the building in the area is calculated.
2) And determining the feasibility of the installation position paths of the indoor fan coils and the air pipelines of the users using refrigeration, and performing construction design after confirming the installation feasibility of each user air conditioning system.
3) And (3) adjusting the summer refrigeration working condition of the heat pump machine, testing the proper air conditioner water supply temperature of the adjusting system, ensuring the water supply temperature to be stable, controlling the water supply temperature not to be lower than 13.0 ℃ and controlling the water outlet temperature to be within the range of 13.5.0-16 ℃.
4) And the flow rates of the circulating water pump, the intermediate water pump and the sewage pump of the air conditioning system are adjusted, so that the energy consumption of the system is saved.
5) Proper fan coils are designed and selected, the fresh air quantity and the return air quantity of the fan coils can be adjusted according to requirements, and the fan coils are additionally provided with new temperature and humidity controllers, so that the fan coils can refrigerate and dehumidify, and the indoor floor is guaranteed not to dew.
Secondly, the technical scheme is regarded as a whole or from the perspective of products, and the technical scheme to be protected has the following technical effects and advantages:
the utility model relates to a refrigerating process as a comprehensive technology, which comprises the steps of connecting a sewage source water delivery pipeline to a sewage heat exchanger in series, connecting the sewage source water delivery pipeline to a cooling water pump to send cooling water to a heat pump unit, and sending the cooling water to a user indoor fan coil and a buried radiation coil for refrigerating through pipelines.
The utility model utilizes the large-scale water source heat pump to refrigerate the efficiency far higher than the thermal efficiency of the domestic air conditioner, can greatly reduce the refrigerating energy consumption of the system, especially the underground water source heat pump, soil source heat pump system, can relieve the problem of heat balance of the groundwater, so the technology is a practical project of energy conservation, environmental protection, economy and low carbon, and has wide popularization significance.
Thirdly, as inventive supplementary evidence of the claims of the present utility model, it is also reflected in the following important aspects:
(1) The expected benefits and commercial values after the technical scheme of the utility model is converted are as follows:
the utility model improves the refrigerating capacity of the regional summer refrigerating system, greatly improves the heat efficiency compared with the traditional household air conditioner, saves 40% of the electric load of the refrigerating system, saves more than 40% of the running cost of the system, and has higher commercial value for similar water source heat pump projects.
When the heat pump machine is used for refrigerating in summer according to the actual heating area of 60.0 ten thousand square meters, the available air conditioning area is 40.0 ten thousand square meters, the refrigerating efficiency of the heat pump machine is far higher than that of a household air conditioner by refrigerating in summer through a large sewage source heat pump, the electricity consumption is saved by more than 40% under the same cooling, and 3.27 is taken according to the equivalent index coefficient of the electric power (ten thousand kWh) of the water source heat pump system. Compared with the traditional household air conditioner refrigeration, the water source heat pump refrigeration is calculated through operation in summer, which is equivalent to saving more than 1300 tons of standard coal in summer and reducing more than 4000 tons of atmospheric pollutant emission.
The utility model is based on a northern area ground radiation centralized heating system, and implements and utilizes a ground floor radiation coil cooling technology. In the floor radiant heating system which is already used, the raw water source heat pump machine is used for refrigeration by the refrigerating system by means of a new process design technology, the original floor radiant heating coil is used for refrigeration indoors, meanwhile, part of cold load is supplemented by the fan coil, concentrated cooling in a residential area is realized, the water source cooling system is fully utilized, the refrigerating efficiency of the heat pump is high, and the comprehensive running cost of the system is greatly reduced. And as for the newly-built project, a set of floor radiation refrigerating and heating system can be considered, so that repeated investment construction of a building air conditioner terminal system is reduced, and the total investment of the air conditioner system is saved. Through increasing fan coil new trend system, can further improve building environment's air quality, make indoor environment's travelling comfort better. In order to solve the problems that a large-scale area only has a water source heat pump ground radiation heating system, the high-efficiency water source heat pump is not utilized for concentrated cooling in summer, a small household air conditioner is adopted for refrigerating by a user, the refrigerating efficiency is low, the noise is high, the air conditioner blows cold air, the comfort is poor, and the like, the utility model provides a novel energy-saving process technology of the water source heat pump refrigerating system, the original system water source heat pump and the ground radiation coil are utilized for refrigerating, and meanwhile, the added fresh air fan coil is utilized for refrigerating (or utilizing the household air conditioner) to supplement, so that the demand of the user for the concentrated air conditioner in summer is realized, the heat efficiency of the air conditioner system is improved, and the comprehensive energy consumption for refrigerating in summer is reduced. In order to realize a centralized refrigeration system in summer, the refrigeration capacity of the original heat pump system needs to be calculated, a new air conditioning process and operation conditions are designed, the efficient refrigeration function of the water source heat pump is exerted, the new system can meet the air conditioning requirement of a user, the effects of energy conservation and consumption reduction can be achieved, and the comprehensive operation cost of the refrigeration system is reduced.
(2) The technology of the utility model mainly teaches heating system equipment for the floor radiant coil pipe in winter by utilizing a water source heat pump, and gives consideration to the technology of cooling by floor radiation in summer. In the implemented residential water source heat pump floor radiant heating system, the water source is used for heat exchange of the heat pump heating system, so that winter heating hot water is prepared for users, the high efficiency of the water source heat pump is exerted, but the low-energy of the water source is not utilized in summer, and the potential heat energy of the water is wasted in summer. Because the refrigerating efficiency of the large-scale water source heat pump is far greater than that of the household air conditioner, the power consumption of the household air conditioner is far higher than the concentrated refrigerating power consumption of the water source heat pump under the same refrigerating load, and the running cost is high. Therefore, in the refrigeration in summer, the concentrated refrigeration by utilizing the water source heat pump and the ground radiation heating system is necessary and feasible, and the floor has the advantages of energy conservation, environmental protection, economy and low carbon, can reduce the noise of the air conditioner, has no cold air blowing sense problem of the air conditioner, and has better floor radiation comfort. The radiation refrigeration of the floor in summer is realized by carrying out new process technology design and necessary detection elements and adding a new fan coil or (using the original air conditioner) in the room. When the floor radiation heating coil is used for floor radiation refrigeration, the heat exchange capacity is small, the floor radiation heating coil runs under the design load of a refrigeration system, the refrigeration load can be comprehensively calculated to meet the requirement of more than 60% of the design cold load, so the refrigeration capacity can meet the requirement of most of the refrigeration time periods in summer of an air conditioning system, the floor radiation refrigeration can completely meet the indoor air conditioning temperature requirement in low-load time periods, a fan coil is required to be newly added for refrigerating (the household air conditioner can be utilized) to meet the requirement of the system air conditioner in high-load time periods, the cooling load of the floor radiation deficiency is regulated in a complementary mode through fan coil refrigeration, meanwhile, dehumidification and cooling are carried out on indoor air, floor condensation is prevented, the fan coil can also be used for processing part of fresh air, and the fresh air is used as indoor fresh air, so that the indoor air quality is improved.
(3) For the conventional water source heat pump, only a radiation heating system is provided, the defects of a heat pump centralized refrigerating system are overcome, a new process technology is needed to be adopted for transformation and recycling, water source cooling is fully utilized in the refrigerating process in summer, the refrigerating efficiency of the water source heat pump is improved, the water source heat pump centralized refrigerating system is used for replacing the refrigerating of a household air conditioner, the cooling load of the insufficient floor radiation part is regulated in a supplement mode through additionally arranging a fan coil for refrigerating (or utilizing the household air conditioner), the normal and efficient operation of the air conditioning system is ensured, the total energy consumption of the air conditioning refrigerating system in summer is effectively reduced, and particularly, the problem of the heat balance deficiency of the heat pump system using a ground source and a ground water source can be solved.
Drawings
Fig. 1 is a general structural diagram of a water source heat pump air conditioning cycle system provided in embodiment 1 of the present utility model.
Fig. 2 is a diagram of a circulating part of a water source heat pump air conditioning circulating system according to embodiment 2 of the present utility model.
Fig. 3 is a water source part structure diagram of a water source heat pump air conditioning cycle system provided in embodiment 3 of the present utility model.
Fig. 4 is one of the configurations of the air conditioning unit of the water source heat pump air conditioning cycle system provided in embodiment 4 of the present utility model.
Fig. 5 shows one of the configurations of the air conditioning unit of the water source heat pump air conditioning cycle system according to embodiment 5 of the present utility model.
Fig. 6 shows one of the configurations of the air conditioning unit of the water source heat pump air conditioning cycle system according to embodiment 6 of the present utility model.
Fig. 7 is a cycle chart mode of the winter heating scheme provided in embodiment 7 of the present utility model, in which the closed switching valve is omitted: v2, V4, V6, V8.
Fig. 8 is a cycle chart of the summer refrigeration scheme provided in embodiment 8 of the present utility model, omitting the closed switching valve: v1, V3, V5, V7.
FIG. 9 is a simulated chart for seasonal air conditioning load demand throughout the year for a typical residential building using DeST-h 1 (residential building thermal environment simulation kit) according to the present utility model, with light bars representing thermal load and dark bars representing cold load.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
1. The embodiments are explained. In order to fully understand how the utility model may be embodied by those skilled in the art, this section is an illustrative embodiment in which the claims are presented for purposes of illustration.
As shown in fig. 1 and 2, the utility model provides a water source heat pump air conditioner circulation system, which comprises a water source part, a circulation part and an air conditioner part; the water source part comprises a cooling water supply port (I1) for providing cooling water supply and a cooling water return port (O1) for receiving cooling water return; the air conditioning part comprises an air conditioning water supply port (O2) for receiving air conditioning water supply and an air conditioning water return port (I2) for discharging air conditioning water return; the circulating part comprises a water source heat pump, and the water source heat pump comprises an evaporator and a condenser; the evaporator water inlet (C1) is respectively connected with the cooling water supply port (I1) and the air conditioner water return port (I2), and the evaporator water outlet (C2) is respectively connected with the cooling water return port (O1) and the air conditioner water supply port (O2); the condenser water inlet (C3) is respectively connected with the cooling water supply port (I1) and the air conditioner recovery port (I2), and the condenser water outlet (C4) is respectively connected with the cooling water return port (O1) and the air conditioner water supply port (O2); a first switching valve (V1) is arranged between an evaporator water inlet (C1) and a cooling water supply port (I1), a fourth switching valve (V4) is arranged between the evaporator water inlet (C1) and an air conditioner water return port (I2), a fifth switching valve (V5) is arranged between an evaporator water outlet (C2) and the cooling water return port (O1), an eighth switching valve (V8) is arranged between the evaporator water outlet (C2) and the air conditioner water supply port (O2), a second switching valve (V2) is arranged between a condenser water inlet (C3) and the cooling water supply port (I1), a third switching valve (V3) is arranged between the condenser water inlet (C3) and the air conditioner water return port (I2), and a sixth switching valve (V6) is arranged between the condenser water outlet (C4) and the cooling water return port (O1), and a seventh switching valve (V7) is arranged between the condenser water outlet (C4) and the air conditioner water supply port (O2).
2. Application example. In order to prove the inventive and technical value of the technical solution of the present utility model, this section is an application example on specific products or on related technologies of the claim technical solution:
as shown in fig. 3, further, the water source part includes a sewage heat exchanger and a sewage lift pump, the sewage heat exchanger includes two sets of water inlet and outlet passages, and the two sets of water inlet and outlet passages can exchange heat with each other, wherein one set of water inlet and outlet passages is communicated with the cooling water supply port (I1) and the cooling water return port (O1), and the inlet of the other set of water inlet and outlet passages is communicated with the sewage lift pump.
Further, the sewage heat exchanger is plural.
3. According to the original water source condition of the water source heat pump system in the area, the flow and the temperature of the water source system can be calculated according to the load of the air conditioning system. According to the water taking flow of the original system, a reclaimed water diversion pipe, a water storage sedimentation tank, a sewage lifting pump, a water delivery pipe, a sewage heat exchanger, a cooling water pump and a heat pump unit are taken.
As shown in fig. 4 and 5, the air conditioning part further comprises a water collector, a water separator and external air conditioning equipment, wherein the water collector, the water separator and the external air conditioning equipment are respectively provided with a water inlet and a water outlet, and the air conditioning equipment is characterized in that the water collector water outlet is connected with an air conditioning water return port (I2), the water collector water inlet is connected with the water outlet of the external air conditioning equipment, the water separator water inlet is connected with an air conditioning water supply port (O2), and the water separator water outlet is connected with the water inlet of the external air conditioning equipment.
4. Fig. 4 shows embodiment 4 of the present utility model, wherein the external air conditioning equipment is preferably a floor radiant tube.
As shown in fig. 5, in embodiment 5 of the present utility model, the external air conditioning equipment is a fan coil.
As shown in fig. 6, in embodiment 6 of the present utility model, the external air conditioning device may preferably be connected with both the floor radiant tube and the fan coil.
According to the technology of the water source heat pump system, firstly, the system is converted into a summer refrigeration mode through a winter and summer conversion valve, a water source lifting water pump is started, the water source lifting water pump enters a sewage heat exchanger in a heat pump machine room through a water pipe and a regenerated water pipe, cooling water is exchanged through the sewage heat exchanger to obtain cooling water, the cooling water is used as a cooling water system of a heat pump machine, water is circularly supplied by the cooling water pump, the heat pump refrigeration system is cooled through a condenser and then works through a heat pump evaporator to prepare air-conditioning cold water, the air-conditioning water is sent to a user end-to-end radiating coil and a fan coil through the air-conditioning water pump, the air-conditioning water is subjected to joint refrigeration through end equipment to meet the temperature requirement of an indoor air conditioner, and then the air-conditioning water returns to the heat pump machine set through an air-conditioning water return pipe. The fan coil adopts fresh air and return air to be used in a mixed mode, and the air conditioner cold load is sent into a room through the air supply pipe, so that a certain amount of indoor fresh air load can be ensured, and the indoor air conditioner refrigerating load requirement is met.
The fan coil is designed to be used by mixing fresh air and return air, the refrigerating load of the fan coil is selected according to 50% of the total design load of users, the refrigerating capacity of the system under the use condition is required to be met, the system can normally run in summer, in order to ensure that the air conditioning system can not produce dew condensation during running, the temperature of air conditioning water of the refrigerating system is required to be controlled, namely, high-temperature air conditioning cold water is adopted, and the water source temperature of regenerated water in summer of the system is basically about 25 ℃. According to design and calculation, the air-conditioning water supply temperature used by the air-conditioning system is calculated to be not lower than 13.0 ℃, the air-conditioning water supply temperature is generally controlled to be in the range of 13.5.0-16 ℃, the air-conditioning backwater temperature is generally controlled to be in the range of 19.0-21 ℃, and the air-conditioning water supply and backwater temperature is adopted to operate in a normal state, so that the system is ensured not to be dewed, the fan coil can be ensured to have certain dehumidification capability, the reliable operation of the refrigerating system in summer can be ensured, and the user requirements are met.
In order to meet the requirements of the air conditioning system, the fan coil is a high static pressure coil, the temperature controller is automatically controlled, the fan coil return air system adopts fresh air and return air proportion adjustment, the air supply pipe is conveyed to a bedroom by adopting a miniature air pipe according to indoor practical conditions, the living room is directly conveyed sideways, the fan coil is installed nearby in a kitchen, the workload is small, the floor radiation coil and the fan coil are used for combined refrigeration, a part of the refrigerating capacity of the fan coil is used for indoor cooling load, and a part of the cooling load is used for fresh air cooling and dehumidification.
By adopting the novel process technology, not only can great economic benefit be obtained, but also certain social benefit is achieved, the method is an environment-friendly, environment-friendly and energy-saving economic technical project, and has great popularization value and significance for similar projects.
Fig. 7 and 8 show a heat pump room refrigeration process according to the present utility model: the method comprises the steps of performing winter and summer mode conversion on a heat pump system pipe network in a heat pump machine room, switching off winter heat supply valves V1, V3, V5 and V7, opening system summer refrigeration valves V2, V4, V6 and V8, switching the working mode of a heat pump, enabling the heat pump to be converted into a refrigeration mode, performing equipment configuration adjustment according to the design of an air conditioning system, enabling the refrigeration system equipment to work in parallel, setting working conditions of a unit according to design requirements, enabling an air conditioning cooling water system to be recycled by a cooling water pump, cooling the heat pump refrigerating system, enabling the heat pump to work through the refrigeration system, preparing air conditioning cold water, enabling the air conditioning cold water to be pumped to user terminal equipment through a system air conditioning water pump, enabling terminal fan coils and a ground radiation coil to perform refrigeration, and meeting the user air conditioning requirements. The air conditioning system can be accurately regulated, so that the air conditioning system can be reliably and economically operated, the heat pump refrigerating system can be ensured to reach the design standard of the air conditioning system, and the heat pump machine can work in a high-efficiency state.
The refrigeration process flow of the heat pump system comprises the following steps: the cooling process is that firstly, the reclaimed water is pressurized by a pump station sewage lifting pump and is sent to each heat pump machine room through a water pipe, the primary reclaimed water entering the machine room firstly enters a conveying main pipe and then enters a sewage heat exchanger for cooling and heat exchange, the reclaimed water is discharged to a rainwater well through a reclaimed water pipe after heat exchange, the cooled water after being cooled by the sewage heat exchanger is sent to a condenser of a heat pump machine through a cooling water pump connected with an LQS cooling water pipe and a valve, the cooled water is recycled to cool the heat pump, and the cooled water from the heat pump is connected with a cooling water outlet pipe and the valve to return to the sewage heat exchanger. The heat pump machine is used for cooling and refrigerating heat exchange to prepare air-conditioning cold water of an air-conditioning system, the air-conditioning water coming out of the heat pump firstly enters an air-conditioning water supply header pipe, then is connected with an air-conditioning water pipe and a valve V8 and then enters a water separator of a heat pump machine room, and is respectively sent to a user water collector of each area through an air-conditioning water supply pipe, is connected with the air-conditioning water supply pipe to enter users, is subjected to heat exchange and refrigeration through a connected indoor fan coil and a floor radiant tube, the fan coil is sent into the indoor through fresh air and return air mixed refrigeration to fulfill the requirement of indoor part of air-conditioning load, the floor radiant tube is used for completing most of air-conditioning load, after the air-conditioning water is refrigerated, the air-conditioning water returns to the air-conditioning system water collector through an air-conditioning return pipe, the return water of each system is collected to the water collector, is connected with the air-conditioning water return header pipe to the air-conditioning water pump, then is connected with the air-conditioning water return pipe and the valve V4 to be sent to the water inlet end of the evaporator of the heat pump machine through the air-conditioning water circulation pump, and the air-conditioning water is continuously used by the air-conditioning water pump, and the air-conditioning system requirement is met (if a household air-conditioning system is used for supplementing an air-conditioning cold load user, and a fan coil refrigerating system is not used).
The working process of the refrigeration system of the water source heat pump machine comprises the following steps: the cooling process is that firstly, the regenerated water with the temperature of 25 ℃ is conveyed to a sewage heat exchanger through a sewage lifting pump, after the heat exchange of the sewage heat exchanger, the outlet water temperature of the regenerated water is raised to 32 ℃, the heat exchange temperature difference is 7 ℃ (10 ℃ can be also taken according to the actual situation), and after the operation of the regenerated water is completed, the regenerated water is discharged to a rainwater well through a drainage pipe. The temperature of the cooling water cooled by the sewage heat exchanger is reduced from 33.5 ℃ when the cooling water enters the sewage heat exchanger to 28 ℃ when the cooling water is discharged, the 28 ℃ cooling water discharged from the sewage heat exchanger is pumped to the heat pump machine of the air conditioning system through the cooling water pump, after the cooling water is subjected to heat exchange by the heat pump, the temperature of the cooling water discharged from the heat pump machine is increased to 33.5 ℃, and then the cooling water is connected to the inlet end of the sewage heat exchanger through a regenerated water pipe and is recycled through the cooling water pump. The temperature of the air-conditioning cold water used by the system is controlled to be more than 13.0 ℃, the temperature of the water discharged from the heat pump is controlled to be more than 13.0 ℃, the water discharged from the heat pump is set to be 14 ℃, the water is sent to a water separator through an air-conditioning water pump connecting air-conditioning pipeline and then distributed to the tail ends of air conditioners in all areas through the water separator, the tail end equipment of the air conditioner exchanges heat and refrigerates and then is sent to a water collector through a water return pipe, the water is circularly sent to the heat pump unit through the air-conditioning water pump, the water return temperature of the air conditioner is set to be 19 ℃, and the working temperatures of air conditioner water supply and return are set to be 14 ℃/19 ℃. The air conditioning system with the temperature is safe and reliable to operate, and the water source heat pump has high heat efficiency and is more energy-saving.
3. Evidence of the effect of the examples. The embodiment of the utility model has a great advantage in the research and development or use process, and has the following description in combination with data, charts and the like of the test process.
As shown in fig. 9, for the dynamic cooling load analysis of residential buildings, the following conclusions can be drawn for the summer cooling season:
1) The load below 50% is 70% of the Ji Fuhe% refrigeration,
2) The load below 55% accounts for Ji Fuhe%,
3) The load below 60% accounts for 82% of the refrigeration season load,
4) The load below 80% accounts for 96.6% of the load in the refrigerating season,
5) It follows that most of the time during summer cooling is in the low load operation phase, therefore, during the summer cooling low load period (below 60%), the indoor air conditioning needs can be completed through the floor radiant coil cooling.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is merely illustrative of the embodiments of the present utility model, and the present utility model is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principle of the present utility model will be apparent to those skilled in the art within the scope of the present utility model.
Claims (8)
1. The water source heat pump air conditioning circulation system is characterized by comprising a water source part, a circulation part and an air conditioning part;
the water source part comprises a cooling water supply port (I1) for providing cooling water supply and a cooling water return port (O1) for receiving cooling water return;
the air conditioning part comprises an air conditioning water supply port (O2) for receiving air conditioning water supply and an air conditioning water return port (I2) for discharging air conditioning water return;
the circulating part comprises a water source heat pump, and the water source heat pump comprises an evaporator and a condenser;
the water inlet (C1) of the evaporator is respectively connected with the cooling water supply port (I1) and the air conditioner water return port (I2), and the water outlet (C2) of the evaporator is respectively connected with the cooling water return port (O1) and the air conditioner water supply port (O2);
the water inlet (C3) of the condenser is respectively connected with the cooling water supply port (I1) and the air conditioner water return port (I2), and the water outlet (C4) of the condenser is respectively connected with the cooling water return port (O1) and the air conditioner water supply port (O2);
a first switching valve (V1) is arranged between a water inlet (C1) of the evaporator and a cooling water supply port (I1), a fourth switching valve (V4) is arranged between the water inlet (C1) of the evaporator and an air conditioner water return port (I2), a fifth switching valve (V5) is arranged between a water outlet (C2) of the evaporator and the cooling water return port (O1), an eighth switching valve (V8) is arranged between the water outlet (C2) of the evaporator and the air conditioner water supply port (O2), a second switching valve (V2) is arranged between the water inlet (C3) of the condenser and the cooling water supply port (I1), a third switching valve (V3) is arranged between the water inlet (C3) of the condenser and the air conditioner water return port (I2), a sixth switching valve (V6) is arranged between the water outlet (C4) of the condenser and the cooling water return port (O1), and a seventh switching valve (V7) is arranged between the water outlet (C4) of the condenser and the air conditioner water supply port (O2);
and the parts, the water gaps and the switching valves are connected through pipelines.
2. The water source heat pump air conditioning cycle system according to claim 1, wherein the water source part comprises a sewage heat exchanger and a sewage lifting pump, the sewage heat exchanger comprises two groups of water inlet and outlet passages, and the two groups of water inlet and outlet passages can exchange heat with each other, and the water inlet and outlet passages are communicated with a cooling water supply port (I1) and a cooling water return port (O1), and the inlets of the other groups of water inlet and outlet passages are communicated with the sewage lifting pump.
3. The water source heat pump air conditioning cycle system of claim 2 wherein said wastewater heat exchanger is a plurality.
4. The water source heat pump air conditioning circulation system according to claim 1, wherein the air conditioning part comprises a water collector, a water separator and external air conditioning equipment, the water collector, the water separator and the external air conditioning equipment are respectively provided with a water inlet and a water outlet, the water collector water outlet is connected with an air conditioning backwater port (I2), the water collector water inlet is connected with a water outlet of the external air conditioning equipment, the water separator water inlet is connected with an air conditioning water supply port (O2), and the water separator water outlet is connected with a water inlet of the external air conditioning equipment.
5. The water source heat pump air conditioning cycle system of claim 4 wherein said external air conditioning device is a floor radiant tube.
6. The water source heat pump air conditioning cycle of claim 4 wherein said external air conditioning unit is a fan coil.
7. The water source heat pump air conditioning cycle system according to claim 1, wherein a cooling water pump is additionally arranged on a pipeline at the side of the near end of the cooling water supply port (I1).
8. The water source heat pump air conditioner circulating system according to claim 1, wherein an air conditioner water pump is additionally arranged on a pipeline on the side of the near end of the air conditioner water return port (I2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320873819.3U CN219607272U (en) | 2023-04-19 | 2023-04-19 | Water source heat pump air conditioner circulation system |
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| CN202320873819.3U CN219607272U (en) | 2023-04-19 | 2023-04-19 | Water source heat pump air conditioner circulation system |
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Denomination of utility model: Water source heat pump air conditioning cycle system Effective date of registration: 20230908 Granted publication date: 20230829 Pledgee: Xi'an Yongcheng Financing Guarantee Co.,Ltd. Pledgor: Silian Intelligent Technology Co.,Ltd. Registration number: Y2023610000673 |