Heat pump driven direct expansion type temperature and humidity separately-controlled heat recovery type solution humidity adjusting fresh air unit

Abstract

The invention relates to a direct expansion type temperature and humidity separately-controlled heat recovery type solution humidity adjusting fresh air unit. The fresh air unit comprises a heat pumpsystem, a solution regeneration system and a solution humidity adjusting system, wherein the heat pump system is formed through pipeline connection of a compressor, a heat recovery coil pipe, a condenser, an expansion valve, a pre-cooling and preheating coil pipe and an evaporator; the solution regeneration is formed through pipeline connection of a regeneration solution pump, a condenser, a regeneration solution spraying pipe, regeneration solution wet film filler and a regeneration solution collecting tank; the solution humidity adjusting system is formed through pipeline connection of a humidity adjusting solution pump, an evaporator, a humidity adjusting solution spraying pipe, humidity adjusting solution wet film filler and a humidity adjusting solution collecting tank; the heat recovery coil pipe and the regeneration solution wet film filler form a heat recovery return air solution regeneration channel; and a fresh air humidity adjusting air supply channel is formed by the pre-cooling and pre-heating coil pipe and the humidity adjusting solution wet film filler. The direct expansion type temperature and humidity separately-controlled heat recovery type solution humidity adjusting fresh air unit can be widely applied to places needing to provide dry fresh air.

Description

Technical field [0001] The invention relates to a fresh air unit, in particular to a heat pump-driven direct expansion type temperature and humidity sub-control heat recovery type solution humidity adjustment fresh air unit. Background technique [0002] Most of the existing air-conditioning systems adopt condensation and dehumidification treatment methods, using refrigerators to prepare low-temperature chilled water, reducing the air temperature to below the dew point, so as to achieve the dehumidification process of the fresh air. In order to meet the dehumidification requirements, the chilled water temperature is much lower than the cooling point. The required cold water temperature causes the evaporation temperature of the refrigerator to decrease, thereby reducing the coefficient of performance of the refrigerator. At present, the solution dehumidification equipment uses salt solution with moisture absorption and dehumidification characteristics as the working medium, and th...

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a heat pump-driven direct expansion type temperature-humidity control heat recovery type solution humidity control fresh air unit; to solve the problem of low heat exchange efficiency of the heat exchanger in the prior art and poor return air heat recovery effect, The solution dehumidification fresh air unit cannot meet the requirements of energy saving and anti-corrosion at the same time, and the efficiency of the heat pump system is low.

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