Regenerative heat recovery dehumidification heat pump system and its operation method

Abstract

The invention discloses a regenerative and recuperative dehumidifying heat pump system. The regenerative and recuperative dehumidifying heat pump system comprises a primary evaporator, a secondary evaporator, a condenser, a compressor, a throttling valve, a dehumidifying heat exchanger, a surface air cooler, a first water pump and a second water pump, wherein the dehumidifying heat exchanger comprises a dehumidifying cooler and a dehumidifying regenerator. By the dehumidifying property of the dehumidifying heat exchanger, the evaporator and the condenser of the heat pump system are respectively used as a cold source and a heat source in a dehumidifying and regenerating process of the dehumidifying heat exchanger, continuous running of the system is realized, and functions of cooling dehumidifying in summers and heating humidifying in winters can be fulfilled. In addition, the secondary evaporator is added in the heat pump system and is used for recycling heat in regenerated air, possibility of liquid impact of the compressor can be reduced, energy can be recycled, and the regenerative and recuperative dehumidifying heat pump system is energy-saving and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air conditioning, in particular to a regenerative heat recovery and dehumidification heat pump system and an operating method thereof. Background technique [0002] According to research and practice in the energy field in the past 30 years, building energy consumption accounts for nearly 1 / 3 of the total energy consumption of society, and more than half of building energy consumption comes from the energy consumption of refrigeration, air conditioning and heating systems. One of the main reasons for the high energy consumption of the traditional heat pump air-conditioning system is that the latent heat and sensible heat of the air are processed simultaneously by condensation and dehumidification. [0003] After searching the public literature of the prior art, it is found that the current heat pump air-conditioning system is difficult to meet the requirements of both winter and summer a...

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Problems solved by technology

[0003] After searching the public literature of the prior art, it is found that the current heat pump air-conditioning system is difficult to meet the requirements of both winter and summer and energy recovery. "It is a rotary dehumidification system driven by a heat pump system, which can meet the requirements of summer and winter working conditions through valve switching, but this system can only achieve heating but not humidification in winter working conditions, and additional auxiliary humidification equipment is required. Increase energy consumption, and the system does not have an energy recovery device, and the system COP is low

However, the Chinese patent application number 201410166042.2 "a heat pump drying system with sensible heat recovery and multi-effect dehumidification function" satisfies the dehumidification function and sensible heat recovery, but it does not have the function of heating and humidification

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