The energy absorbed by a unit mass of refrigerant in the evaporator is called?

The term that defines the energy absorbed by a unit mass of refrigerant in the evaporator is known as the refrigeration effect. This concept is fundamental in refrigeration systems, as it quantifies how much heat is removed from the refrigerated space during the phase change of the refrigerant.

When the refrigerant enters the evaporator, it absorbs heat from the surrounding environment and evaporates, changing from a liquid into a vapor. The refrigeration effect is expressed in terms of energy per unit mass, often measured in BTU per pound or kilojoules per kilogram. It is crucial for evaluating the performance of a refrigeration system, as a higher refrigeration effect indicates a more efficient system in terms of heat absorption relative to the amount of refrigerant used.

The other choices involve different concepts. Mass flow refers to the quantity of refrigerant moving through a system but does not directly pertain to the energy absorbed. Melting equivalent isn’t a recognized term in refrigeration contexts; it generally refers to heat absorption during a phase transition related to melting substances, distinct from the function of a refrigerant. Capacity refers to the maximum output or ability of a cooling system, which encompasses various factors including the refrigeration effect but doesn't specifically define the energy absorbed by the refrigerant itself in the