Under what conditions is the heat absorbed by the condenser water in a refrigerating plant the greatest?

The heat absorbed by the condenser water in a refrigerating plant is greatest when the evaporative temperatures are higher and the condenser temperatures are lower. When the evaporative temperature rises, the refrigerant absorbs more heat from the refrigerated space, increasing its enthalpy. Consequently, this leads to a greater amount of heat being transferred to the condenser as the refrigerant condenses and releases that absorbed heat.

Additionally, having low condenser temperatures allows the refrigerant to release this heat more efficiently, increasing the temperature difference between the refrigerant and the cooling water, which enhances the heat transfer process. When there's a considerable difference in temperature between the two media, the effectiveness of heat exchange improves, leading to a higher rate of heat absorption by the condenser water.

In this scenario, it’s important to note that opting for low condenser temperatures while elevating evaporator temperatures maximizes the heat transfer process, thus ensuring the most efficient operation of the refrigerating cycle.