CN203132031U - Ground-water-cooled preheating type solar jet air conditioner - Google Patents

Abstract

The utility model discloses an underground water-cooled preheating solar jet air conditioner, which comprises a connected solar heat collecting hot water circuit, a refrigerant circuit, an underground water circuit and an air conditioning water circuit, and the solar heat collecting hot water circuit includes a solar collector The heater and the solar heat collector are connected with the hot water tank, the generator and the hot water pump in turn, the input end of the hot water tank is provided with a fifth valve, and the output end of the hot water tank is connected with a sixth valve. The utility model uses the low-temperature underground water in summer to directly cool the condenser, which can reduce the condensation temperature of the system, improve the performance coefficient of the solar jet air-conditioning system, and can use the recovered condensation heat to preheat the refrigerant entering the generator. Putting it into use has a significant effect on reducing primary energy consumption and reducing outdoor heat pollution. In addition, because the weather is hotter, the air-conditioning load required is greater, and the supply of solar energy is more sufficient at this time, so the system can effectively alleviate daytime consumption. Grid stress during power peaks.

Description

Underground water-cooled preheating type solar jet air conditioning equipment

technical field

The utility model relates to the field of air-conditioning refrigeration, in particular to a refrigeration device utilizing groundwater for refrigeration .

Background technique

With the further aggravation of the energy crisis, the utilization of solar energy has become the focus of attention. In the solar energy utilization technology, the solar jet refrigeration system is favored by everyone for its simple structure, few moving parts, and low cost, and it is more and more widely used in the field of air conditioning and refrigeration.

The operating mechanism of the solar jet refrigeration system is different from that of the conventional compression system, which leads to three major problems in its operation: 1) Under the same cooling capacity, the same condensation temperature, and the same evaporation temperature, the heat transfer area of the condenser is larger than that of the compression refrigeration system. 2) When the system uses an air-cooled condenser, the condensation temperature of the system is high and the coefficient of performance of the system is low; 3) Compared with the compression system, under the same cooling capacity, the jet refrigeration system will generate huge If the heat of condensation is discharged directly to the atmosphere, it will cause serious thermal pollution.

In summer, there are abundant underground low-temperature water resources. Consider using underground low-temperature water in summer to cool the condenser, and adopt a regenerator to recycle part of the condensation heat, turning waste into treasure. This has important social and economic benefits for saving energy, alleviating the increasingly serious greenhouse effect, improving the living environment, and improving the efficiency of light and heat utilization.

Utility model content

The purpose of this utility model is to provide an underground water-cooled preheating solar jet air conditioner for the above-mentioned deficiencies in the prior art, which can use underground low-temperature water to cool the condenser, and can solve the problem caused by excessive condensation heat of the solar jet system. Problems with thermal pollution of the environment and inefficient system performance due to air-cooled condensers.

The technical solution of the utility model is realized in the following manner: an underground water-cooled preheating type solar jet air conditioner, comprising a connected solar heat collecting hot water circuit, a refrigerant circuit, an underground water circuit and an air conditioning water circuit, the The solar heat collecting hot water circuit includes a solar heat collector, and the solar heat collector is connected with a hot water tank, a generator and a hot water pump in sequence. Six valves.

The refrigerant circuit includes an ejector and a condenser, and there are two circuits from the condenser. The first circuit includes a refrigerant pump, a preheater and a generator connected through a refrigeration pipeline, and the generator is connected to the ejector; the second The circuit consists of a throttling valve and an evaporator connected by a refrigeration pipe, and the evaporator is connected to an ejector.

The groundwater circuit includes a condenser, a preheater and a groundwater pump connected through water pipes, the groundwater pump is connected to the condenser through the seventh valve, the groundwater pump is connected to the water separator through the eighth valve, and the water separator is connected to the water collector , The pipeline connecting the preheater and the water collector is provided with a first valve and a fourth valve.

The air-conditioning water circuit includes a hot water tank, an evaporator, and an air-conditioning water pump connected through water pipes, and a water collector. There is a third valve and a ninth valve between the evaporator and the air conditioning water pump.

The utility model uses the low-temperature underground water in summer to directly cool the condenser, which can reduce the condensation temperature of the system, improve the performance coefficient of the solar jet air-conditioning system, and can use the recovered condensation heat to preheat the refrigerant entering the generator. Putting it into use has a significant effect on reducing primary energy consumption and reducing outdoor heat pollution. In addition, because the weather is hotter, the air-conditioning load required is greater, and the supply of solar energy is more sufficient at this time, so the system can effectively alleviate daytime consumption. The system can stably and reliably provide chilled water for air-conditioning and hot water for air-conditioning with a temperature between 40 and 80°C due to the pressure on the power grid during peak hours of electricity. , Fan coil air conditioning system. Especially in rural residences, it has broad application prospects. Most farmers in my country have self-drilled wells, and the groundwater temperature is stable between 10 and 18°C in summer, which provides advantages for the application and promotion of the system. At the same time, the system It can improve the utilization rate of solar energy, alleviate the pressure on the power grid caused by the power consumption of air conditioners, and has significant economic and social benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in the accompanying drawings, an underground water-cooled preheating type solar jet air conditioner includes a connected solar collector hot water circuit, a refrigerant circuit, an underground water circuit and an air conditioning water circuit, and the solar collector hot water circuit includes The solar heat collector 1 and the solar heat collector 1 are connected to the hot water tank 2, the generator 4 and the hot water pump 3 in sequence, the input end of the hot water tank 2 is provided with a fifth valve F ₆ , and the output end of the hot water tank 2 is connected to There is a sixth valve F ₆ . What comes out of the sixth valve _F6 is domestic hot water, and what links to each other with the fifth valve _F6 is an automatic water supply pipe.

The refrigerant circuit includes an ejector 7 and a condenser 8, and there are two circuits from the condenser 8. The first circuit includes a refrigerant pump 6, a preheater 5 and a generator 4 connected through a refrigeration pipeline, and the generator 4 It is connected with the ejector 7; the second loop includes a throttle valve 10 and an evaporator 9 connected through a refrigeration pipeline, and the evaporator 9 is connected with the ejector 7.

The groundwater circuit includes a condenser 8, a preheater 5 and a groundwater pump 14 connected through water pipes, the groundwater pump 14 is connected to the condenser 8 through the seventh valve _F7 , and the groundwater pump 14 is connected to the water separator through the eighth valve _F8 12, the water separator 12 is connected to the water collector 13, and the pipeline connecting the preheater 5 and the water collector 13 is provided with a first valve F ₁ and a fourth valve F ₄ . The underground water pump 14 and the preheater 5 are connected with the underground water source.

The air-conditioning circuit includes a hot water tank 2, an evaporator 9, and an air-conditioning water pump 11 connected by water pipes, and a water collector 13. A second valve F ₂ is arranged between the water collector and the hot water tank 2, and the hot water tank A third valve F ₃ is provided between 2 and the evaporator 9 , and a ninth valve F ₉ is provided between the evaporator 9 and the air-conditioning water pump 11 . Each of the above-mentioned valves is a manual control or automatic control valve.

The unit can be applied in the air-conditioning cold and hot water dual supply system. While providing chilled water for air-conditioning, it also provides hot water with a temperature between 40-90°C. The hot water temperature span is large, which can meet domestic hot water supply, and can also meet production process heating and small area heating. The system can also provide low-temperature chilled water separately, which is suitable for air-conditioning systems such as radiant cooling and fan coil units.

The solar heat collection system is mainly composed of solar heat collector 1, hot water pump 3, hot water tank 2, generator 4, etc. Water circulates in the pipeline to absorb solar energy to obtain the required hot water. The injection refrigeration system is mainly composed of generator 4, ejector 7, condenser 8, evaporator 9, preheater 5, throttling device 10 and refrigerant pump 6, etc. In summer, the underground water source, ground water pump 14, condenser 8, and preheater 5 form the ground water cooling system. In addition, the ground water source, ground water pump 14, water separator 12, and water collector 13 form the summer ground water direct cooling system. , Through the ground water pump, ground water can be directly supplied to the air conditioner in the room to realize cooling. The air-conditioning water pump 11, the water collector 13, the water distributor 12 and each valve mainly realize the needs of heating and cooling for users.

There are two cooling modes for the air conditioning system. The first mode is the direct cooling of the solar jet refrigeration system. The working process is as follows: the second valve F ₂ , the third valve F ₃ , the fourth valve F ₄ , and the eighth valve F ₈ closed, the first valve F ₁ , the seventh valve F ₇ and the ninth valve F ₉ are opened. When the temperature of the hot water in the hot water tank 2 reaches the start-up requirement of the jet refrigeration system, the jet refrigeration system starts to run, the hot water pump 3, the air-conditioning water pump 11 and the ground water pump 14 start, and the ground water cools the condenser, and the high temperature coming out of the condenser The water enters the preheater 5 to preheat the refrigerant at the outlet of the refrigerant pump 6 . When there is a demand for domestic hot water, the sixth valve F ₆ is opened, and when there is no demand, the sixth valve F ₆ is closed. When the water temperature in the water tank is lower than the required water level, the fifth valve _F5 is opened to replenish water.

Mode 2 is the groundwater direct cooling mode, and the working process is as follows: the second valve F ₂ , the third valve F ₃ , the seventh valve F ₇ and the ninth valve F ₉ are closed, the first valve F ₁ , the fourth valve F ₄ and The eighth valve _F8 is opened. Under the action of the underground water pump 14, the low-temperature groundwater is directly passed into the water separator ₁₂ and then sent to each air-conditioned room _. After the preheater 5, it flows into the underground water source for cooling.

The switch between mode 1 and mode 2 is determined by the load of the terminal air conditioner, and mode 2 is preferred.

Winter heating mode of the air conditioning system: when the solar energy resources are abundant and the water temperature in the hot water tank 2 reaches the temperature required by the air conditioner user for heating, the second valve F ₂ , the third valve F ₃ , and the ninth valve F ₉ are opened, and the first The first valve F ₁ , the fourth valve F ₄ and the eighth valve F ₈ are closed. Under the action of the air-conditioning water pump 11, the high-temperature solar hot water is sent to the water separator 12 through the third valve _F3 , the evaporator 9, and the ninth valve _F9 , and then sent to each air-conditioned room, where heat is released in each air-conditioned room After the water collector 13, the second valve _F2 enters the hot water tank, and repeats the above cycle after heating up.

Claims (4)

1. a underground water cold type preheating type solar energy jetting air-conditioning equipment, comprise the solar energy heating hot-water return, refrigerant loop, ground water loop and the air conditioner water loop that are connected, it is characterized in that: described solar energy heating hot-water return comprises that solar thermal collector (1), solar thermal collector (1) are connected with boiler (2), generator (4) and heat-exchanger pump (3) successively, and the input of boiler (2) is provided with the 5th valve (F ₅), the output of boiler (2) is connected with the 6th valve (F ₆).

2. underground water cold type preheating type solar energy jetting air-conditioning equipment according to claim 1, it is characterized in that: described refrigerant loop comprises injector (7) and condenser (8), from condenser (8), two loops are out arranged, the first loop comprises the refrigerated medium pump connected by refrigeration piping (6), preheater (5) and generator (4), and generator (4) is connected with injector (7); Second servo loop comprises the choke valve connected by refrigeration piping (10) and evaporimeter (9), and evaporimeter (9) is connected with injector (7).

3. underground water cold type preheating type solar energy jetting air-conditioning equipment according to claim 1, it is characterized in that: described ground water loop comprises the condenser connected by water pipe (8), preheater (5) and underground water pump (14), and underground water pump (14) is by the 7th valve (F ₇) with condenser (8), be connected, underground water pump (14) is by the 8th valve (F ₈) with water knockout drum (12), be connected, water knockout drum (12) is connected with water collector (13), and the pipeline that preheater (5) is connected with water collector (13) is provided with the first valve (F ₁) and the 4th valve (F ₄).

4. underground water cold type preheating type solar energy jetting air-conditioning equipment according to claim 1, it is characterized in that: described air conditioner water loop comprises the boiler connected by water pipe (2), evaporimeter (9) and water pump of air conditioner (11), also comprise water collector (13), between water collector (13) and boiler (2), be provided with the second valve (F ₂), be provided with the 3rd valve (F between boiler (2) and evaporimeter (9) ₃), be provided with the 9th valve (F between evaporimeter (9) and water pump of air conditioner (11) ₉).

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