To prevent cooling tower basin water from freezing during cold weather, many units:
a. are equipped with ethylene glycol antifreeze systems
b. are equipped with electric basin heaters
c. are equipped with propane burners
d. are equipped with ice defrosters
e. have salt added to the water
Answer: B
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Power Engineering Chapter 70
- Calcium sulphate scaling increases with:
- Sulphuric acid is used in the cooling tower to prevent?
- The rate of calcium bicarbonate breakdown and calcium carbonate scaling increases with:
- Crossflow towers:
- Dissolved solids build up in a closed cooling tower system as the water evaporates from the system. This buildup is controlled by:
- The average amount of water volume that evaporates from a cooling tower is:
- High discharge water temperature from the cooling tower could be caused by:
- Excessive wind velocity in a natural draft, cooling tower may cause:
- Natural draft cooling towers operate most effectively in large open spaces and:
- Organic growths also called _____ can reduce the flow rates in heat exchanger tubes and channels.
- Air flow in a natural draft cooling tower is dependent upon the:
- The principal cause of steel corrosion in cooling towers is:
- Natural draft cooling towers are divided into:
- Your cooling tower fan motor is running hot and is noisy.. after examining the motor, you discover that the bearings need replacement. The evidence you discovered was: ?
- The main scale forming substance in cooling water towers is:
- With all other factors being equal, a counter-flow cooling tower _____________ as a cross-flow cooling tower.
- Biological fouling in recirculating cooling water towers is caused by algae, _____ and bacteria growth.
- Scaling is not as severe in cooling towers when compared to boilers because:
- Air flow in a natural draft cooling tower is dependent upon the:
- A valve that bypasses water flow away from the fill of a cooling tower during cold weather should not be closed until the temperature reaches:
- Water contained in the air stream at the discharge of a cooling tower is removed:
- The component of wood that is leached away reducing the ability of the wood to resist decay is the:
- The rate of heat transfer in any cooling tower system depends on the: