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The approximate heating value of propane is:

rylie4.4

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The approximate heating value of propane is:

The approximate heating value of propane is:

A) 1,780 BTU per cubic foot. B) 1,000 BTU per cubic foot.
C) 3,200 BTU per cubic foot. D) 2,500 BTU per cubic foot.

[Ques. 2] Chilled water systems use a primary refrigerant to remove heat from a secondary refrigerant in a chiller unit. What is the secondary refrigerant in such systems?

A) Water B) R-22 C) R-134A D) Ammonia

[Ques. 3] Cooling towers in which the water circulating in the tower is separate from the water circulating through the condenser are called:

A) Closed-loop cooling towers. B) Evaporative cooling towers.
C) Regenerative cooling towers. D) Open-loop cooling towers.

[Ques. 4] Natural gas is:

A) About the same density as air.
B) Heavier than air.
C) Lighter than air.
D) Either lighter or heavier than air depending on the characteristics of the local gas.

[Ques. 5] Compressor capacity can be controlled by:

A) Voltage or current modulation. B) Discharge valve throttling.
C) Cylinder unloading or hot gas bypass. D) Blocking the discharge gas with a solenoid.

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bubsjhoff128

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