The condenser is required to cool down the refrigerant heated up by compression in the compressor. The hot refrigerant gas flows into the compressor, thereby dissipating heat to the environment via the pipeline and fins. As it cools, the refrigerant pressure falls and the refrigerant state changes from gaseous to liquid.
Increase in power over the whole speed range, low fuel consumption, improved engine efficiency, reduction of emission values, less thermal pressure on the engine - there are numerous reasons to cool the combustion air of supercharged engines with intercoolers.