Refrigeration circulation is comprised of a compressor, four way
reversing valve, an electronic expansion valve, an evaporator
and an evaporative condenser followed by a receiver, a
filter-dryer and a refrigerant flow meter. Refrigerant (R134a),
absorbing heat in the evaporator, flows to the compressor
through the four-way reversing valve, the compressor which
could be adjusted from40 to 90 Hz increases the pressure of the
refrigerant and delivers superheated vapor to the condenser,
where the vapor is condensed into liquid. Then, the liquid
refrigerant passes through the electronic expansion valve.
Finally, the refrigerant returns back to the evaporator. The
photo of the novel air conditioning system using dual independent
evaporative condenser is shown in Fig. 2.