Solution dehumidifying fresh air handling unit combining heat pump drive and evaporative cooling

Abstract

The invention relates to a solution dehumidifying fresh air handling unit combining heat pump drive and evaporative cooling, which is characterized by comprising a solution circulating system, a heat pump system and an evaporative cooling water system, wherein the solution circulating system comprises an interstage solution circulation loop formed by connecting a dehumidifying module, a regeneration module and a solution circulating pump; the heat pump system comprises a solution heat exchange circulation loop formed by connecting a compressor, a first condenser, a throttle valve and an evaporator sequentially and a water heat exchange circulation loop formed by connecting the compressor, a solenoid valve, a second condenser, the throttle valve and the evaporator sequentially; the first condenser and the heat-exchange end of the evaporator are respectively connected with the regeneration module and the dehumidifying module through the solution circulating pump to form two intrastage solution circulation loops; the evaporative cooling water system comprises an evaporative cooling module, a water circulating pump and a water replenishing valve; and the evaporative cooling module is connected with the second condenser through the water circulating pump to form a circulation loop performing heat exchange with refrigeration working media. The solution dehumidifying fresh air handling unit can be widely applied to occasions without indoor ventilation for use.

Description

technical field [0001] The invention relates to a fresh air unit, in particular to a solution dehumidification fresh air unit combined with heat pump driving and evaporative cooling. Background technique [0002] At present, most of the existing air conditioners adopt the condensation dehumidification treatment method, and use the refrigerator to prepare low-temperature frozen water to reduce the air temperature below the dew point, thereby realizing the dehumidification treatment process for the fresh air. Since the required cold source temperature is very low (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. Moreover, the condensed water produced by condensation dehumidification is easy to breed mold and seriously affect the indoor air quality. The solution dehumidification method uses a salt solution with hygroscopic properties as the w...

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Problems solved by technology

But in many cases, no indoor exhaust can be used. Patent ZL200610012268.2 discloses a heat-driven solution fresh air treatment unit that uses cooling water as a cooling source. It installs an evaporative cooling device (using cooling water as a cooling source) Take away the excess heat from the condenser, but because the heat from the condenser is only taken away by the solution regeneration system, the condensation temperature is very high, which significantly reduces the performance of the solution dehumidification unit

In addition, in the above three patents, the heat dissipation of the condenser is greater than the heat required for the concentration and regeneration of the solution in the system. If the excess heat of this part of the condenser is not eliminated, the condensation temperature will continue to rise, which will significantly affect the heat pump. System and overall solution dehumidification unit performance

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