Heat Pump

Air source Heat pump is a device which extracts heat from air and transfer heat to the water. Main components of heat pump are

• Evaporator
• Compressor
• Condenser
• Expansion valve
• Fan

Function:

Fan draws out side ambient air in to the heat pump and pass through the evaporator coil. In the evaporator coil, the refrigerant can turn liquid to gas at very low temperature. This gas compressed by compressor to elevate the temperature and pressure. Condenser is nothing but tube in tube or tube in shell heat exchanger is made of copper pipe with no welding inside. The internal spiral surface of copper tube ensure effectiveness of heat exchanger. Provision is made for gas as well as water connection.

Heated gas pass through one tube while water passes through the shell. Water gets instantly heated from 15 deg.c to 55 deg.c. Refrigerant gas is condensed and goes to liquid from the same pressure as discharged by compressor. In expansion valve, causes sudden pressure drop in refrigerant, in turn refrigerant temperature drop to temperature below the ambient