Engineering Board Exam Reviewer · Thermodynamics · medium

The lowest temperature to which water can theoretically be cooled in an evaporative cooling tower is the:

  1. Dry-bulb temperature of the entering air
  2. Wet-bulb temperature of the entering air
  3. Dew-point temperature of the entering air
  4. Freezing point of water

Answer

B. Wet-bulb temperature of the entering air

Solution

Evaporative cooling can approach, but not go below, the entering air's wet-bulb temperature.

More Thermodynamics questions

  1. Water enters a cooling tower at 40 °C and leaves at 30 °C. The entering air has a wet-bulb temperature of 25 °C. What are the range and…
  2. Moist air at 101.325 kPa has a vapor partial pressure of 2 kPa. What is the humidity ratio?
  3. Subcooling the refrigerant liquid leaving the condenser in a vapor-compression system:
  4. In an absorption refrigeration system, the compressor of a vapor-compression system is replaced by:
  5. Which refrigerant is widely used in large industrial plants such as ice plants and cold storage due to its high latent heat, though it is…
  6. A refrigeration system removes 50 kW of heat. What is its capacity in tons of refrigeration?
  7. In a vapor-compression refrigeration cycle, h at evaporator exit = 390 kJ/kg, h at compressor exit = 425 kJ/kg, and h at condenser exit =…
  8. A vapor-compression refrigeration system has a refrigerating effect of 140 kJ/kg. What refrigerant mass flow rate is needed for a capacity…
  9. In a vapor-compression refrigeration cycle, h at evaporator exit = 390 kJ/kg, h at compressor exit = 425 kJ/kg, and h at condenser exit =…
  10. A cogeneration plant is one that:

All Thermodynamics Reviewer questions