How does an economizer reduce HVAC operating costs?
a. It reduces compressor speed.
b. It uses cool outdoor air for cooling.
c. It uses a variable-speed blower motor.
d. It runs during off-peak energy use hours.
b. It uses cool outdoor air for cooling.
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Identify some factors other than climate that influence electrical use per household.
What will be an ideal response?
Carbon, ceramics, and composites are in a group of materials called:
a. ferrous b. nonferrous c. alloys d. inorganic
The intake event has the longest port duration of all two-stroke events.
Answer the following statement true (T) or false (F)
A cooling tower with its fan located in the air stream leaving the tower, drawing the air through the tower, is:
A) A natural-draft cooling tower. B) A hybrid-draft cooling tower. C) A forced-draft cooling tower. D) An induced-draft cooling tower.