A New Type of Air Conditioning System Based on Finned Ceiling Radiant Coupled with Independent Fresh Air and Its Thermal Comfort Experimental Study

Figure 3

Schematic diagram of the direct-expansion ceiling radiation and independent fresh air coupled air conditioning system. 1 – compressor, 2 – four-way reversing valves, 3 – heat exchanger, 4 – ventilation fan, 5 – temperature sensor, 6 – radiation terminal, 7 – heat exchange core, 8 – filter, 9 – main service valve, 10 – electronic expansion valve, and 11 – liquid storage tank.