A heat pump driven internal cooling solution dehumidification fresh air unit

Abstract

The invention relates to an inner-cooling type solution desiccant fresh air unit driven by a heat pump. The inner-cooling type solution desiccant fresh air unit comprises fresh air treatment units in multiple stages, the fresh air treatment unit of each stage comprises an inner-cooling type solution dehumidifier, an inner-heating type solution regenerator, an auxiliary heat-insulation solution dehumidifier, a compressor and an expansion valve. An evaporator is embedded in the inner-cooling type solution dehumidifier, a condenser is embedded in the inner-heating type solution regenerator, the compressor, the condenser in the inner-heating type solution regenerator, the expansion valve and the evaporator in the inner-cooling type solution dehumidifier are sequentially connected to form a heat pump circulating loop, the auxiliary heat-insulation type solution dehumidifier is connected with a solution circulating pump to form an inside-dehumidifier solution circulating loop, the inner-heating type solution regenerator is connected with the inner-cooling type solution dehumidifier and the auxiliary heat-insulation type solution dehumidifier through a solution circulating pump to form a solution circulating loop, and a solution-solution heat exchanger is arranged on the solution circulating loop between the inner-cooling type solution dehumidifier and the inner-heating type solution regenerator.

Description

technical field [0001] The invention relates to a fresh air unit, in particular to a heat pump driven internal cooling solution dehumidification fresh air unit. Background technique [0002] The main task of the civil building air conditioning system is to meet the requirements of suitable indoor temperature and humidity parameters, and the air dehumidification process is an important part of it. Most of the existing dehumidification methods are based on condensation dehumidification, that is, low-temperature cold water, refrigerants and other refrigerants are used to cool the air below the dew point temperature, so that the moisture in the air condenses to complete the dehumidification process. Due to the low temperature of the cold source required (lower than the dew point temperature of the air), the evaporation temperature of the refrigerator is reduced, which seriously affects the coefficient of performance of the refrigerator. In addition, the traditional condensing d...

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Problems solved by technology

However, the function of the regeneration module itself is to increase the concentration of the solution and realize the concentrated regeneration of the solution, while replenishing water directly leads to a decrease in the concentration of the solution. There is a significant contradiction between the two

From the perspective of solution regeneration, the heat on the side of the condenser can be effectively utilized, and the above-mentioned schemes of setting up an auxiliary condenser to discharge the heat of condensation have failed to make full use of the heat on the side of the condenser to regenerate the solution

[0005] Therefore, from the perspective of the prior art, there is still a lack of a heat pump-driven solution dehumidification device that can use all the heat on the condenser side for solution regeneration

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