What is a reasonable condensing temperature for evaporative condensers?

A reasonable condensing temperature for evaporative condensers is generally determined by considering the ambient conditions and the efficiency of the cooling system. When using an evaporative condenser, the temperature of the air entering the condenser is a key factor in achieving optimal performance.

The correct choice of air on the condenser wet bulb + 10k is appropriate because the wet bulb temperature accounts for the cooling effect of evaporation. In evaporative cooling applications, the wet bulb temperature reflects both the temperature and the humidity of the air. By adding a margin (in this case, 10k), one allows for the heat rejection capacity needed to efficiently condense the refrigerant. This margin helps ensure that the condenser operates effectively, taking into account that the cooling potential of the wet bulb temperature is higher than that of the dry bulb due to its consideration of humidity.

This choice ensures the system operates within the expected range of temperatures for effective condensing, taking advantage of the cooling properties of evaporation, especially in humid conditions where the wet bulb temperature may be significantly lower than the dry bulb temperature.