Final answer:
The most common single-phase motor used in HVACR equipment is the permanent split capacitor motor, known for its efficiency and reliability in systems like heat pumps.
Step-by-step explanation:
The most common type of single-phase motor used in HVACR equipment is the permanent split capacitor motor. These motors are preferred due to their high efficiency, reliability, and relatively low cost compared to other types of motors. In a simple heat pump, for instance, components such as the compressor may utilize a permanent split capacitor motor to drive the process of heating. Heat transfer occurs as the working fluid in the evaporator absorbs heat from the outdoor air and then is compressed, increasing its temperature and pressure. The hot gas then moves to the condenser inside the heated space, where heat is released as the gas condenses back into a liquid. Afterward, the working fluid is cooled as it passes through the expansion valve, completing the cycle.