Condenser

Since refrigerant leaves compressor in high pressure vapor form, so it requires a way to change vapor into liquid again. This is the function of condensing unit to condense vapor into liquid, so it can reuse in cooling cycle.
When cooling vapor pumped into condenser by compressor, the temperature and the pressure increase, that high temperature facilitate the effective heat transfer from condenser surface to entire room. Some of heat which is transffered to room air is a latent heat that absosrbs refrigerant in evaporator. Heat releasing into room is enough to condense cooling vapor into liquid.
There are some condenser types, i.e. air cooled with free air circulation, force air cooled with fan, indirect air cooled through thermal contact with a cabinet.
This type is usually bigger phisically than force air cooled with fan condenser, and construsted from small finned or fin that surrounded by wire. Condenser is put on back side of refrigerator and continous the thermal expansion to surrounding air room to create a convection current at pipes.
The construction of forced draft condenser type is usually made by small fin. The fan of the condenser convective to circuit, so only work during compressor work.
This type put in compartment and requires air baffles to direct air at that small fins.
Warm wall condenser is other form of static condenser. At that condenser, condenser pipe is attached directly in thermal contact with inside of refrigeration. Heat is removed from refrigeration wall to surrounding air room. The outside wall of refrigeration will feel hot if this type condenser work.