refrigeration cycles

Refrigeration cycles remove heat from an enclosed space to keep it cold, typically using a refrigerant fluid. The cycle involves four main steps: compressing the refrigerant to increase its temperature and pressure; condensing it to release heat and turn it into a liquid; expanding it through a valve or capillary tube, which lowers its pressure and temperature; and finally, evaporating it inside the cooling space to absorb heat. This continuous loop maintains a low temperature within refrigerators, air conditioners, and other cooling systems by transferring heat out and keeping the interior cold.