This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why would a preheat coil be used on the energy-recovery wheel? A) To dry the intake air B) To ... (Read 110 times)

clippers!

  • Hero Member
  • *****
  • Posts: 828
on: Jul 24, 2018
Why would a preheat coil be used on the energy-recovery wheel?
 
  A) To dry the intake air B) To prevent moisture transfer to the supply air
  C) To prevent frost from forming on the wheel D) To warm the exhaust air

Question 2

Most heat pumps have two metering devices because:
 
  A) Two metering devices allow two stage operation.
  B) Each coil must function as the evaporator during one of the cycles.
  C) Two metering devices allow for extra refrigerant flow at low outdoor temperatures.
  D) One metering device serves as a backup to the primary metering device.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

B


clippers!

  • Hero Member
  • *****
  • Posts: 828
Reply #2 on: Jul 24, 2018
TY


leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #3 on: Jul 24, 2018
You're welcome


« previous next »
 

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Many plastic intake manifolds are constructed using many parts glued together to form complex ... Many plastic intake manifolds are constructed using many parts glued together to form complex ...
This distributor ignition system uses a remotely mounted ignition coil. This distributor ignition system uses a remotely mounted ignition coil.
Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ... Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ...
Global Energy Flow Global Energy Flow
The demand for energy is met by burning coal and other fossil fuels The demand for energy is met by burning coal and other fossil fuels
Energy In, Energy Out Energy In, Energy Out
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library