Frostless air source heat pump system based on humidity adjustment and evaporative cooling

Abstract

The invention discloses a frostless air source heat pump system based on humidity adjustment and evaporative cooling. The frostless air source heat pump system based on humidity adjustment and evaporative cooling comprises a refrigerant circuit, a water and humidity adjustment solution circuit and an air circuit. The refrigerant circuit comprises a compressor, a four-way valve, a first heat exchanger, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a heat exchanger, a liquid accumulator, a drying and filtering device, an electronic expansion valve, a finned tube exchanger and an air-liquid separator; the water and humidity adjustment solution circuit comprises a humidity adjustment device, a first valve, a second valve, a third valve, a fourth valve, a first solution pump, a second solution pump, a fluid reservoir, a heat exchanger and a regenerating device; and the air circuit comprises the finned tube exchanger , the humidity adjustment device and a fan. When the system provided by the invention runs at a heating mode in winter, the frosting can be avoided, when the system runs at a cooling mode in summer, the condensing temperature can be lower through evaporative cooling, and higher cooling efficiency is achieved, so that dual efficient running of the system in winter and summer is realized.

Description

technical field [0001] The invention belongs to the technical field of design and manufacture of refrigeration and air-conditioning systems, and relates to a frost-free air-source heat pump system based on humidity control and evaporative cooling. Background technique [0002] Air source heat pumps take into account both refrigeration and heating, and have the advantages of high comprehensive utilization efficiency of primary energy, energy saving, environmental protection, and low initial investment. The vigorous promotion of air source heat pumps is of great significance to improve the comprehensive utilization efficiency of energy in my country and realize energy saving and emission reduction. The biggest problem in the heating operation of air source heat pumps in winter is the frost on the surface of the outdoor fin tube heat exchanger. With the growth of the frost layer between the fins of the heat exchanger, the heat transfer resistance between the fin surface and t...

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Problems solved by technology

[0004] Technical problem: The purpose of the present invention is to solve the performance degradation of the air source heat pump system caused by the frosting problem and the low cooling efficiency in summer, and to provide a solution to adjust the humidity in winter to achieve heating operation without frosting. A frost-free air source heat pump system based on humidity control and evaporative cooling to achieve lower condensing temperature operation and improve subcooling by evaporative cooling

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