Towers
This is the tower range on a typical cooling tower
What is 10 degrees F
Where does the additional heat that is not absorbed by the evaporator, that has to be rejected come from?
Heat of compression\compressor
These support the shaft while it is under a load
What are bearings
Spray water used to cool air passing through the tower
Plume
This is the term used for minerals that become concentrated solids
What is scale
The ______________ method is used to aid in the rate of evaporation process for forced and induced draft cooling towers. (Hint: material)
fill\wet-surface method
These are the two types of heat rejected by cooling towers
Sensible and Latent heat
These are the two types of shaft seals used for centrifugal pumps.
stuffing box and mechanical seals
The metal part of the pan or basin that gathers water
What is the sump
The term used for the temperature difference between the entering and leaving water of the cooling tower is called _________________________
What is tower range
This is the process used to eliminate a high concentration of minerals left in the circulating water supply.
What is blowdown
A cooling tower must have this for the off season
What is fire protection
These are used to achieve alignment between a a drive and driven device
What are shims
The counter-flow that air causes many particles of water to be suspended in air
What is drift
This substance, created by bacteria, is 4 times more insulating than scale and can cause corrosion of tower surfaces
What is biofilm
Cooling towers are designed to reduce the water temperature to within ________ degrees of the ambient wet-bulb temperature.
7
The compressor adds about _________ more heat, so the cooling tower must be designed to reject ________ more heat
25%, 25%
Cooling towers typically use what kind of pumps?
Centrifugal
The high frequency pulsing action of a single generator damages the membrane of the planktonic bacteria causing small 'pores'
What is electroportation
This is the device that is located on the water outlet port of the cooling tower and collects particles before they get into the basin.
What is the strainer
This can happen during low ambient conditions if the condenser becomes too efficient, if a bypass valve is not used.
Starves evaporator coil
The process of cooling the circulating condenser water by evaporating the tower water, and no heat added or removed from the process by external means
What is adiabatic
Cooling towers rely on this method of heat transfer for operation
What is evaporation
The bacteria are attracted to powder and become entrapped
What is encapsulation
This is the substance typically used to lubricate the seals in a water pump.
What is water