Study on the Optimization of Operation Mode of Heat Pump Rotary Desiccant Dehumidifier Fresh Air Units
To reduce the regeneration energy consumption of the rotary desiccant dehumidification system,a heat pump condensation heat was used to heat indoor exhaust air for regeneration of the rotary desiccant,and a heat pump type rotary desiccant dehumidification fresh air unit was constructed.The dehumidification characteristics of the unit were studied through TRNSYS simulation software,with a focus on the effect of the temperature and humidity of the processed air on the dehumidification performance of the unit.A meteorological model was first constructed to determine the typical working conditions in Shanghai.Then,a heat pump system model was built to determine the operating conditions of the heat pump system under different working conditions.Finally,a unit model was constructed to study the dehumidification performance of the unit under different typical working conditions.It was concluded that with the drop of chilled water temperature in the front surface cooler,the overall dehumidification performance of the dehumidification rotary desiccant and the unit was improved,but the wet load bearing ratio of the dehumidification rotary desiccant was lowered.It was proposed that when the moisture content of the target supply air was high,the dehumidification performance of the dehumidification rotary desiccant can be fully exerted by increasing the supply temperature of chilled water,and the refrigeration energy consumption can be reduced at the same time.
fresh air unitheat pumprotary desiccant dehumidificationregenerateTRNSYS
NETL
NSTL
万方数据
