A solar absorption type supercooled compression composite refrigeration system and refrigeration method thereof

Abstract

Disclosed are a solar energy absorption type supercooling and compressing combined refrigeration system and a refrigeration method therefor. In the refrigeration system, a solar heat collector (1) is in connection with a heat accumulating box (2), a generator (3), and a driving fluid pump (13) successively; the generator (3) is in connection with a first condenser (4), a first throttle valve (5), a super-cooler (6), an absorber (7), a solution pump (14), and a solution heat exchanger (8) successively; a second condenser (9) is in connection with the super-cooler (6), a second throttle valve (10), an evaporator (11) and a compressor (12) successively; a first temperature sensor (15) is located in a middle part of the heat accumulating box (2); a second temperature sensor (16) is located at an inlet end of the second throttle valve (10); a first controller (17) is connected to the driving fluid pump (13), the solution pump (14) and the first temperature sensor (15) respectively for receiving a temperature signal and transmitting a control signal; and a second controller (18) is connected to the driving fluid pump (13), a frequency converter (19) and the second temperature sensor (16) respectively for receiving a temperature signal and transmitting a control signal. The refrigeration system is capable of adaptively regulating the driving fluid temperature and refrigerating capacity of an absorption sub-system according to the variation characteristics of the operation condition, thereby effectively improving the energy saving effect of the system under the circumstance of variable operation conditions.

Description

technical field [0001] The invention relates to a refrigeration system, in particular to a solar absorption type supercooled compression composite refrigeration system and a refrigeration method thereof. Background technique [0002] The energy consumption of air conditioners has become the main factor for the shortage of power supply in summer in many big cities in my country. In recent years, air-conditioning energy consumption has continued to grow and has accounted for more than 50% of building energy consumption. In addition, the huge air-conditioning power consumption also seriously restricts the further improvement of my country's energy conservation and emission reduction. Therefore, reducing the energy consumption of air conditioners will effectively alleviate the contradiction of power supply and significantly promote the sustainable development of society and economy. Solar energy is a green and clean energy with an extremely large amount of resources. Its hourl...

AI Technical Summary

Problems solved by technology

When the solar radiation is significantly attenuated, the temperature of the driving fluid will drop rapidly and cause the absorption subsystem to consume too much driving energy, which will cause the absorption subsystem to shut down for a long time, resulting in a significant reduction in the energy saving effect of the system

In addition, when the real-time cooling load of the building drops sharply, the temperature of the subcooler (which also serves as the evaporator of the absorption subsystem) will decay synchronously, which can also induce long-term shutdown of the absorption subsystem, which in turn leads to attenuation of the energy-saving effect of the system

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