This inverter-driven heat pump system provides heating in the winter, and cooling in the summer, by connecting a maximum of 16 various indoor units with a large capacity outdoor unit. The air-conditioned space consists of large rooms or various zones. The heat pump system uses one central controller to run all indoor units, or individual controllers for each indoor unit, having EHP or GHP types.

   
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  ¢º Operation Principle
  Except for the gas engine and heat exchangers (to recover heat from exhaust gas), there is little difference with an Electric Heat Pump.

As you can see in the picture above, in order to conduct cooling operations, the gas engine driven compressor pressurizes and heats the refrigerant. And then, the refrigerant loses its heat at the heat exchanger through condensation.

When liquid refrigerant passes through the expansion valve, its temperature and pressure decrease. At the indoor heat exchanger, the refrigerant absorbs heat from the air, cooling it. As for heating, the four-way valve reverses the cooling cycle.

When passed through the expansion valve, the pressure and temperature of the condensed coolant rise. At the outdoor heat exchanger, the refrigerant vaporizes by absorbing heat from the outdoor air.
 
     
   
     
     
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