The heat being absorbed in the evaporator comes from what source?

The heat absorbed in the evaporator is primarily sourced from the product being cooled or the conditioned space. In refrigeration and air conditioning systems, the evaporator serves a crucial role in transferring heat from the area that needs to be cooled.

As refrigerant flows into the evaporator coil, it undergoes a phase change from liquid to vapor. This phase change occurs at a low temperature, allowing the refrigerant to absorb heat from the surrounding area or product. The heat, which would otherwise raise the temperature in that space, is effectively removed, resulting in cooling.

The evaporator's function is central to the refrigeration cycle, where it allows heat to be extracted and transferred away, ultimately contributing to the efficiency and effectiveness of the cooling system. The source of the heat is directly tied to the specific environment or items being treated rather than from other components of the system or external sources.