Final answer:
The suction saturation temperature in an air source heat pump in heating mode refers to the temperature at which the refrigerant entering the compressor changes from a gas to a liquid. It is determined by the pressure of the refrigerant in the evaporator coil and can vary depending on factors such as the design of the heat pump and the outdoor temperature.
Step-by-step explanation:
In an air source heat pump, the suction saturation temperature in heating mode refers to the temperature at which the refrigerant entering the compressor changes from a gas to a liquid.
The suction saturation temperature is determined by the pressure of the refrigerant in the evaporator coil. As the refrigerant absorbs heat from the outside air, it evaporates and increases in temperature.
The specific suction saturation temperature of an air source heat pump in heating mode can vary depending on factors such as the design of the heat pump and the outdoor temperature.