If refrigerant condenses at a temperature of 105 degrees F and the water leaves the condenser at 95 degrees F, the condenser approach temperature will be:

If refrigerant condenses at a temperature of 105 degrees F and the water leaves the condenser at 95 degrees F, the condenser approach temperature will be:

• A. Condenser approach temperature will be 10 degrees
• B. Condenser approach temperature will be 95 degrees
• C. Evaporator (chiller) approach temperature will be 10 degrees
• D. Evaporator (chiller) approach temperature will be 105 degrees

Answer: (A)

Condenser approach temperature is the difference between the refrigerant’s condensing temperature and the cooling water’s temperature as it leaves the condenser. Here, the refrigerant condenses at 105°F and the water leaves at 95°F, so the approach temperature is 105 − 95 = 10°F. A small difference like this indicates efficient heat transfer in the condenser. The other choices involve the evaporator or use the wrong temperatures, which aren’t what’s being referenced in this scenario.

Condenser approach temperature is the difference between the refrigerant’s condensing temperature and the cooling water’s temperature as it leaves the condenser. Here, the refrigerant condenses at 105°F and the water leaves at 95°F, so the approach temperature is 105 − 95 = 10°F. A small difference like this indicates efficient heat transfer in the condenser. The other choices involve the evaporator or use the wrong temperatures, which aren’t what’s being referenced in this scenario.