What happens to the load when evaporator pressure goes down?

When the evaporator pressure goes down, the load on the refrigeration system typically decreases. This is because a lower evaporator pressure results in a lower temperature in the evaporator coil. The refrigerant does not absorb as much heat from the surrounding area or product, leading to a reduction in the cooling capacity needed from the system.

In practical terms, as the evaporator pressure drops, the refrigerant remains in a liquid state longer at lower temperatures, which means it effectively absorbs less heat during its phase change process. Consequently, with less heat being absorbed, the overall load that needs to be managed by the compressor is reduced. This principle is essential in understanding refrigeration cycles and how changes in pressures within the system can directly impact the efficiency and performance of the cooling process.