Research on Energy-Saving Experimental of Critical Dehumidification of Combined Drying by Dehumidification Wheel and Heat Pump

Figure 4

Experimental bench for critical dehumidification. 1: three-way valve, 2: temperature and humidity sensors, 3: compressor, 4: pressure gage, 5: desiccant wheel, 6: regenerative auxiliary heater, 7: regeneration fan, 8: regenerative condenser, 9: inlet air regeneration, 10: drying box, 11: drying frame, 12: drying auxiliary heater, 13: drying condenser, 14: waste heat condenser, 15: dehumidification fan, 16: expansion valve, 17: evaporator, 18: preheater, and 19: humidifier.