When the evaporator load increases, what happens to the suction pressure of the system?

When the evaporator load increases, it leads to a higher demand for refrigerant to absorb heat, which directly affects the suction pressure of the system. In this scenario, as the evaporator load increases, there is an increase in the flow of refrigerant that the compressor has to move, resulting in a corresponding increase in the suction pressure.

This relationship occurs because greater evaporator loads require the compressor to work harder to maintain the desired cooling effect. As the evaporator absorbs more heat, the refrigerant vaporizes more quickly. Thus, the increased flow through the evaporator not only enhances the system's capacity to cool but also causes a rise in suction pressure as the compressor pulls more vapor that has been generated.

Understanding this dynamic is crucial because it illustrates the balance and relationship between evaporator load, refrigerant flow, and suction pressure in refrigeration systems. Therefore, the correct interpretation of the effects of increased evaporator load aligns with the understanding that flow increases while pressure remains relatively stable during the process of heat absorption and vaporization.