Double-inner-cold-source two-stage cooling dehumidification heat pump system

Abstract

The invention provides a double-inner-cold-source two-stage cooling dehumidification heat pump system comprising a refrigerant system, a cooling water system and an air system. The refrigerant systemcomprises a compressor, a dehumidification heat exchanger (a refrigerant pipeline), a throttling device and an electromagnetic valve. The cooling water system comprises a dehumidification heat exchanger (a cooling water pipeline) and an electromagnetic valve. The air system comprises a fan, an air valve, an air channel and an air opening. In the double-inner-cold-source two-stage cooling dehumidification heat pump system, the two same dehumidification heat exchangers with double runners are adopted, one dehumidification heat exchanger operates as a dehumidification condenser, the other dehumidification heat exchanger operates as a water cooling dehumidification heat exchanger, and the work modes of the two dehumidification heat exchangers are switched periodically. One stream of air sequentially flows through the dehumidification heat exchanger and an evaporator to be cooled and dehumidified, and meanwhile the other stream of air flows through the dehumidification condenser to be heated and humidified. Continuous thermal and moisture load treatment can be achieved through switching of the electromagnetic valves and the air channel. Compared with the prior art, the double-inner-cold-source two-stage cooling dehumidification heat pump system can achieve stable and efficient treatment of thermal and moisture loads.

Description

technical field [0001] The invention relates to the field of dehumidification heat pumps, in particular to a dehumidification heat pump system with dual internal cooling sources and two-stage cooling. Background technique [0002] The desiccant is coated on the heat exchange surface by the desiccant heat exchanger, which can realize the cooling of the dynamic adsorption process of the desiccant on the other side while the cold fluid on one side of the heat exchanger handles the sensible heat load. The water-cooled desiccant heat exchanger system handles the adsorption heat and sensible heat load through the cooling water in the tube while the process air is dehumidified by the desiccant coated on the outer surface of the heat exchanger. However, such systems have limited capacity to handle sensible heat loads and still require a stable regenerative heat source. The dehumidification heat exchanger system based on refrigerant cooling uses a dehumidification heat exchanger to ...

AI Technical Summary

Problems solved by technology

Although this system can reduce the air temperature at the initial stage of switching the dehumidification evaporator from hot to cold, and improve the ability to handle the circulating heat and humidity load, it still needs to switch the operation mode of the dehumidification heat exchanger relatively frequently, and the condensation problem has not been solved. Improved

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