What is the approach temperature for a water-cooled condenser?

The approach temperature for a water-cooled condenser is defined as the difference between the temperature of the refrigerant entering the condenser and the temperature of the cooling water being used to absorb heat. In practical application, an approach temperature of around 10 degrees F is typical because it indicates an efficient heat exchange process.

If the approach temperature is too low, it may suggest that the cooling water is being effectively cooled, but it might not be practical or achievable in all circumstances due to constraints like ambient temperatures or water availability. Conversely, if the approach temperature is too high, it could indicate potential issues with the condenser's efficiency or the cooling water's temperature, which could lead to increased pressures in the refrigeration system and reduced system performance.

Thus, the choice of 10 degrees F reflects a balance between effective heat exchange and operational efficiency for typical water-cooled condensers in refrigeration systems.