Performance Analysis And Simulation Of A Novel Temperature And Humidity Independent Control System

The load of air conditioning system includes two parts, sensible heatload and latent heat load. Latent load accounts for20%to40%of the totalair-conditioning load. Conventional vapor-compression air conditioningsystem handles sensible load and latent load separately which requires highenergy consumption, and is difficult to ensure the thermal comfort.In this paper, a novel humidity control system (DESICA), and thetemperature and humidity independent control system constituted ofDESICA and VRV (variable refrigerant volume air conditioning system),are studied through field experiment under summer and winter conditions.Comparisons have been made to common adopted joint heat recoveryventilator (HRV) and VRV system. In Shanghai summer conditions,DESICA&VRV system can provide26oC,11.0g/kg indoor space, and theenergy consumption of8hours during the day is18.8kWh, the system COPis4.7and consumes14%less energy. In winter, DESICA&VRV system canprovide21oC,8.1g/kg indoor space, and the energy consumption of8hoursduring the day is17.8kWh, the system COP is4.4and consumes12%lessenergy. The results show that DESICA&VRV system provides more indoorthermal comfort and consumes less energy than HRV&VRV system.A mathematical model of the system is established in EnergyPlus andvalidation is conducted compared with the field experiments results. Therelative error of the model is within16%.