24/06/2025
The refrigeration cycle and reversing valve operation in a heat pump system, which provides both heating and cooling. The compressor pressurizes the refrigerant, sending it through the discharge port toward the outdoor coil (condenser in cooling mode, evaporator in heating mode). A metering device (expansion valve) regulates the refrigerant flow before entering the indoor coil, which functions as either an evaporator or condenser depending on the mode. The reversing valve directs the refrigerant flow, switching between heating and cooling modes. In cooling mode, heat is expelled outdoors, while in heating mode, heat is absorbed from outside and transferred indoors. The control circuit and solenoid valve regulate the reversing valve operation based on thermostat signals. This system allows for energy-efficient temperature control in all seasons, making heat pumps a sustainable HVAC solution.
