A plate heat exchanger (PHE) serving as a condenser allows the hot refrigerant gas to release heat as it flows through a series of thin, closely spaced plates. These plates are designed with corrugations that increase the surface area for heat transfer and induce turbulence, improving the efficiency of heat exchange. Concurrently, a secondary fluid like water or air flows on the outside of the plates, absorbing the heat from the refrigerant. This process cools the refrigerant, causing it to condense back into a liquid. The condensed refrigerant is then collected and removed from the condenser, while the warmed secondary fluid is either recirculated through a cooling system or released into the environment. The PHE's compact and efficient design makes it an ideal choice for condensing applications where space is limited and high heat transfer performance is needed.