What carries the heat from the evaporator to the condenser?

- Apr 24, 2018-

Condenser heat dissipation = evaporator heat absorption + compressor compression work.

In the air-conditioning system, the refrigerant flows in the evaporator, compressor, evaporator, expansion valve, and i-pipe system to complete one cycle and return to the original state when it returns to the starting point.

The compressor constantly sucks refrigerant from the evaporator, forcing the pressure in the evaporator to decrease and the temperature to decrease continuously.

The compressor continuously discharges the refrigerant into the condenser, forcing the pressure in the condenser to rise continuously and the temperature to rise continuously.

When the temperature in the evaporator is lowered, the indoor heat is absorbed; when the temperature of the condenser is increased, the heat is radiated to the outdoor side until an equilibrium state is reached.

At this point, the evaporator pressure is no longer reduced and the condenser temperature no longer rises, ie it reaches a steady state.

From the point of view of entering the evaporator, the refrigerant absorbs heat in the evaporator and the state changes from vapor-liquid mixing to gas (overheating).

It is then compressed in a compressor and becomes a superheated gas.

In this compression process, the refrigerant absorbs the compression work (and heat equivalent) of the compressor, then dissipates heat in the condenser, and then enters the expansion valve. The heat in the expansion process does not change.

Therefore: the condenser heat dissipation = evaporator heat absorption + compressor compression work.

It should be noted that the compression work is only part of the electrical power consumed by the compressor and the rest is lost due to mechanical efficiency.