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vr vr
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6 years ago
Why would a preheat coil be used on the energy-recovery wheel?
 
  A) to prevent moisture transfer to the supply air B) to prevent frost from forming on the wheel
  C) to warm the exhaust air D) to dry the intake air

 Q. 2

Which of the following statements is true regarding the energy-recovery wheel?
 
  A) The energy-recovery wheel does not allow more indoor air into the system without significantly increasing operating costs.
  B) The energy-recovery wheel does not rotate when exiting air passes through it.
  C) The energy-recovery wheel mixes outdoor and exhaust air as the air streams pass through it.
  D) The energy-recovery wheel is configured so that exhaust air exits the top and outdoor air enters the bottom.

 Q. 3

In perimeter applications using the variable-air-volume system, the primary air handler provides
 
  A) variable volume and constant temperature. B) variable volume and heating only.
  C) constant volume and cooling only. D) constant volume and constant temperature.
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madisonodommadisonodom
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6 years ago
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vr Author
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#2
6 years ago
Cheers!!
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#3
6 years ago
Cheers too Thumbs Up Sign
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