Exam 48: Cooling Towers and Pumps

The purpose of the cooling tower bypass valve is to ____.

The heat that the cooling tower must reject from the water in the chiller is the cooling load of the conditioned area plus the heat of ____.

Describe vortexing.

Spray ponds on rooftops have made a comeback in the last few years because they cool the roof and reduce the solar load on the structure.

A spray pond would be an example of a(n) ____________________ draft cooling application.

Natural draft towers and spray ponds are designed to produce a difference in water and air temperatures of ____°F.

Natural draft cooling towers usually has an approach temperature of about ____________________°F because of relying only on the winds.

The term ____ refers to the process of cooling the circulating condenser water by evaporating the tower water.

The water that leaves a cooling tower passes through a strainer. Why?

Larger cooling towers generally use ____________________-type fans.

Define parallel alignment.

The difference between the entering air wet-bulb temperature and the temperature of the water leaving the tower is called the ____________________.

Condenser water pumps are normally ____________________ pumps.

Two methods used to aid the evaporation rate of water in a forced or induced draft tower are ____.

Cooling towers are designed to reduce the entering water temperature to within ____°F of the air's wet-bulb temperature.

If vortexing occurs, it is an indication that there is not enough air in the tower.

Technician "A" says that a cooling tower can reduce the temperature of the water supplied to the condensers to a temperature equal to, but not less than, the wet-bulb temperature of the ambient air. Technician "B" says that a cooling tower's approach temperature is the temperature of the water returning from the water cooled condensers. Which of the following statements is correct?

____________________ allow the motor to soft start and to coast down without abruptly shutting the motor off.

When sizing a cooling tower, the tower is sized to handle the cooling load of the conditioned area plus about ____% for heat of compression.

Define drift.