CN203454314U - Solar air conditioner and air-cooling module combined system - Google Patents

Abstract

The utility model discloses a combined system of a solar air conditioner and an air-cooling module, which comprises an air-cooling module unit and sequentially connected solar heat collectors, hot water circulation pipelines, absorption refrigerators, cold water circulation pipelines, and fan coils; The advantages are: the joint operation of solar air conditioners and air-cooled modules, in the sunny season, using solar energy as the main energy source to generate hot water, driving the absorption chiller to generate cold water for cooling, can greatly reduce the load on the power grid, and realize a system with sufficient solar energy resources. Under certain circumstances, the solar air conditioner is given priority to cooling or heating the building; when solar resources are insufficient, the solar air conditioner and the air-cooled module run simultaneously or the air-cooled module operates independently to cool or heat the building to meet the cooling or heating needs of the building. Therefore, the combined system of solar air conditioner and air-cooling module of the utility model uses solar energy preferentially on the premise of ensuring the user's comfort, greatly reduces the energy consumption of the air conditioning system, and has a high energy utilization rate.

Description

Combined system of solar air-conditioning and air-cooling modules

technical field

The utility model relates to the field of solar air-conditioning systems, in particular to a combined system of solar air-conditioning and air-cooling modules.

Background technique

Traditional air conditioners use electric energy to drive compression refrigerators, which consume a large amount of energy for a long time, and the energy utilization rate is low, which accelerates global warming, especially during the peak electricity consumption period in summer, which brings a huge burden to the power grid. Due to its inexhaustible characteristics, solar energy resources have become the largest energy source that can be developed in the world today. The development and utilization of solar energy resources in my country is in a stage of rapid development. Solar air-conditioning system is an advanced form of solar thermal utilization. It can not only make full use of solar energy throughout the year to provide users with cooling, heating and hot water services, but also is environmentally friendly and pollution-free, significantly reducing the consumption of traditional energy by air-conditioning systems. However, solar energy also has disadvantages such as low density, intermittent and randomness, which reduce the energy utilization rate of current solar air conditioning systems. When solar energy resources are not sufficient, corresponding backup energy sources need to be configured. The current technology mostly uses auxiliary heat sources to provide the hot water needed by the generator for the absorption chiller, such as waste heat, gas, electricity, etc. However, it is not common to use waste heat, and the use of gas consumes a lot of energy and is accompanied by a large amount of toxic waste gas. The use of power supply converts high-grade energy into low-grade heat energy, and the energy utilization rate is low. Therefore, there are certain deficiencies in existing solar air-conditioning systems equipped with back-up energy.

Contents of the invention

The technical problem to be solved by the utility model is to provide a combined solar air conditioner and air-cooling module system with high energy utilization rate and low energy consumption in view of the deficiencies of the prior art.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a combined system of solar air conditioners and air-cooled modules, including sequentially connected solar collectors, hot water circulation pipelines, absorption refrigerators, cold water circulation pipelines and fan disks The water outlet end of the solar heat collector is provided with a first valve and a first temperature sensor, and the solar heat collector is connected to the hot water circulation pipeline through a first heat exchanger, so The hot water circulation pipeline is connected to the absorption refrigerating machine through a second heat exchanger, and the absorption refrigerating machine is connected to the cold water circulation pipeline through a third heat exchanger, The hot water circulation pipeline is provided with a hot water storage tank and several circulating water pumps, the cold water circulation pipeline is provided with a cold water storage tank and several circulating water pumps, the water inlet end of the hot water storage tank is connected to the The water outlet of the fan coil is connected, the water outlet of the cold water storage tank is connected with the water inlet of the fan coil, the water inlet of the cold water storage tank is connected with the water outlet of the fan coil, It also includes an air-cooled modular unit, the water inlet end of the air-cooled modular unit is connected to the water outlet end of the fan coil unit, the water inlet end of the air-cooled modular unit is provided with a second valve, and the air-cooled modular unit is provided with a second valve. The water outlet of the modular unit is connected to the water inlet of the fan coil unit, the water outlet of the air-cooled modular unit is provided with a third valve, and the water outlet of the hot water storage tank is connected to the fan coil unit. connected to the water inlet end of the hot water storage tank, a second temperature sensor, a three-way valve, a fourth valve, and a circulating water pump are sequentially arranged between the water outlet end of the hot water storage tank and the water inlet end of the fan coil unit. The two temperature sensors are respectively connected with the fourth valve and the third valve, and the three-way valve is respectively connected with the outlet end of the hot water storage tank, the fourth valve and the first valve. The two heat exchangers are connected, and a third temperature sensor, a fifth valve, and a circulating water pump are sequentially arranged between the water outlet end of the cold water storage tank and the water inlet end of the fan coil unit, and the third temperature sensors are respectively It is connected with the fifth valve and the second valve.

The absorption refrigerating machine is a lithium bromide absorption refrigerating machine.

Compared with the prior art, the utility model has the advantages that the solar air conditioner and the air-cooled module operate jointly, and in the sunny season, the solar energy is used as the main energy source to generate hot water, and the absorption refrigerator is driven to generate cold water for cooling, which can be greatly improved. Significantly reduce the load on the power grid, and realize the priority of using solar air conditioners for building cooling or heating when solar resources are sufficient; when solar resources are insufficient, solar air conditioners and air-cooled modules run at the same time or the air-cooled modules run alone for building cooling or heating. Building cooling or heating needs. Therefore, the combined system of solar air conditioner and air-cooling module of the utility model uses solar energy preferentially on the premise of ensuring the user's comfort, greatly reduces the energy consumption of the air conditioning system, and has a high energy utilization rate.

Description of drawings

Fig. 1 is a schematic diagram of a combined system of a solar air conditioner and an air-cooled module in an embodiment.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the combined system of solar air conditioners and air-cooled modules includes solar collectors 1, hot water circulation pipelines 2, absorption refrigerators 3, cold water circulation pipelines 4, and fan coil units 5 connected in sequence. Including the air-cooled module unit 6, the water outlet end of the solar collector 1 is provided with a first valve 11 and a first temperature sensor 12, and the solar collector 1 and the hot water circulation pipeline 2 are connected through a first heat exchanger 71 , the hot water circulation pipeline 2 is connected to the absorption chiller 3 through the second heat exchanger 72, the absorption chiller 3 is connected to the cold water circulation pipeline 4 through the third heat exchanger 73, and the hot water circulation pipe A hot water storage tank 21 and two circulating water pumps 81 are arranged on the road 2, a cold water storage tank 41 and a circulating water pump 81 are arranged on the cold water circulation pipeline 4, and the water inlet end of the hot water storage tank 21 and the water outlet of the fan coil unit 5 The water outlet end of the cold water storage tank 41 is connected with the water inlet end of the fan coil unit 5, the water inlet end of the cold water storage tank 41 is connected with the water outlet end of the fan coil unit 5, and the water inlet end of the air-cooled modular unit 6 is connected with the fan coil unit 5 The water outlet of the air-cooled modular unit 6 is provided with a second valve 61, the water outlet of the air-cooled modular unit 6 is connected with the water inlet of the fan coil unit 5, and the water outlet of the air-cooled modular unit 6 is provided with a third valve 61. The valve 62, the water outlet end of the hot water storage tank 21 is connected with the water inlet end of the fan coil unit 5, and the second temperature sensor 22 and the three-way connection are sequentially arranged between the water outlet end of the hot water storage tank 21 and the water inlet end of the fan coil unit 5. valve 23, the fourth valve 24 and the circulating water pump 81, the second temperature sensor 22 is connected with the fourth valve 24 and the third valve 62 respectively, the three-way valve 23 is connected with the outlet end of the hot water storage tank 21, the fourth valve 24 and the The second heat exchanger 72 is connected, and the third temperature sensor 42, the fifth valve 43 and the circulating water pump 81 are sequentially arranged between the water outlet end of the cold water storage tank 41 and the water inlet end of the fan coil unit 5, and the third temperature sensor 42 is respectively connected with The fifth valve 43 is connected to the second valve 61 .

In the above embodiments, the design value of the return water temperature of the absorption refrigerator 3 is 12-14° C., and the absorption refrigerator 3 may be a lithium bromide absorption refrigerator.

In the cooling mode, the solar collector 1 generates hot water at 85~105°C, the first heat exchanger 71 heats the hot water in the hot water storage tank 21, and the hot water drives the absorption refrigerator 3 to generate 6~8°C The cold water is stored in the cold water storage tank 41 and delivered to the fan coil unit 5 through the circulating water pump 81 to provide air conditioning and refrigeration for the building. The start and stop of the air-cooled modular unit 6 are controlled by the third temperature sensor 42 and the second valve 61, and the third valve 62 is opened. When the outlet water temperature of the cold water storage tank 41 is 6-8°C, the solar energy resources are sufficient at this time, the fifth valve 43 is opened, the second valve 61 is closed, and the chilled water that meets the cooling needs of the building is all provided by the solar air conditioner; when the cold water storage tank When the outlet water temperature of 41 is between 8°C and the designed return water temperature of absorption chiller 3 of 12-14°C, the solar energy resource is slightly insufficient at this time, the fifth valve 43 and the second valve 61 are opened at the same time, and the solar air conditioner and wind The cold modules operate at the same time to provide chilled water for the fan coil unit 5; when the outlet water temperature of the cold water storage tank 41 is 12-14°C higher than the designed return water temperature of the absorption chiller 3, the solar energy resources are relatively insufficient at this time, and the fifth valve 43 is closed, the second valve 61 is opened, and all the chilled water meeting the cooling needs of the building is provided by the air-cooled module.

In the heating mode, close the three-way valve 23 to stop the operation of the absorption refrigerator 3, the solar collector 1 generates hot water at 45-60°C, and the first heat exchanger 71 heats the hot water in the hot water storage tank 21, The hot water is transported to the fan coil unit 5 through the circulating pump 81 to provide air conditioning and heating for the building. The start and stop of the air-cooled modular unit 6 are controlled by the second temperature sensor 22 and the third valve 62, and the second valve 61 is opened. When the outlet water temperature of the hot water storage tank 21 is 45~60°C, the solar energy resources are sufficient at this time, the fourth valve 24 is opened, the third valve 62 is closed, and all the hot water meeting the heating needs of the building is provided by the solar air conditioner; when the hot water When the outlet water temperature of the storage tank 21 is 40-45°C, the solar energy resources are slightly insufficient at this time, the fourth valve 24 and the third valve 62 are opened at the same time, and the solar air conditioner and the air-cooling module are operated at the same time to provide heating heat for the fan coil unit 5 Water: when the outlet water temperature of the hot water storage tank 21 is lower than 40°C, the solar energy resources are relatively insufficient at this time, the fourth valve 24 is closed, the third valve 62 is opened, and all the hot water meeting the heating needs of the building is provided by the air-cooled module.

It can be seen that when solar energy resources are sufficient, solar energy is used first when building cooling or heating; when solar energy resources are insufficient, when building cooling or heating, solar air conditioners and air-cooling modules operate simultaneously or air-cooling modules operate independently. On the premise of ensuring the comfort of users, solar energy is used first, which greatly reduces the energy consumption of the air conditioning system, and the energy utilization rate is high.

Claims (2)

1. solar airconditioning and air cooling module association system, comprise the solar thermal collector connecting successively, hot water circulating pipeline, Absorption Refrigerator, cool water circulating pipe road and fan coil, the water side of described solar thermal collector is provided with the first valve and the first temperature sensor, between described solar thermal collector and described hot water circulating pipeline, by First Heat Exchanger, be connected, between described hot water circulating pipeline and described Absorption Refrigerator, by the second heat exchanger, be connected, between described Absorption Refrigerator and described cool water circulating pipe road, by the 3rd heat exchanger, be connected, on described hot water circulating pipeline, be provided with hot water storage tank and some water circulating pumps, on described cool water circulating pipe road, be provided with cold water storage tank and some water circulating pumps, described hot water storage tank's water intake end is connected with the water side of described fan coil, the water side of described cold water storage tank is connected with the water intake end of described fan coil, the water intake end of described cold water storage tank is connected with the water side of described fan coil, characterized by further comprising air cooling module unit, the water intake end of described air cooling module unit is connected with the water side of described fan coil, the water intake end of described air cooling module unit is provided with the second valve, the water side of described air cooling module unit is connected with the water intake end of described fan coil, the water side of described air cooling module unit is provided with the 3rd valve, described hot water storage tank's water side is connected with the water intake end of described fan coil, between the water intake end of described hot water storage tank's water side and described fan coil, be disposed with the second temperature sensor, triple valve, the 4th valve and water circulating pump, the second described temperature sensor is connected with the 3rd described valve with the 4th described valve respectively, described triple valve respectively with described hot water storage tank's water side, the 4th described valve is connected with the second described heat exchanger, between the water intake end of the water side of described cold water storage tank and described fan coil, be disposed with three-temperature sensor, the 5th valve and water circulating pump, described three-temperature sensor is connected with the second described valve with the 5th described valve respectively.

2. solar airconditioning according to claim 1 and air cooling module association system, is characterized in that described Absorption Refrigerator is lithium-bromide absorption-type refrigerating machine.

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