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

Author Question: Given the following readings from an electric furnace, use the formula to calculate airflow. CFM ... (Read 43 times)

ssal

  • Hero Member
  • *****
  • Posts: 572
on: Jul 27, 2018
Given the following readings from an electric furnace, use the formula to calculate airflow.
 
  CFM =
 
  What is the airflow in CFM and does this furnace have the recommended air flow?
 
  Voltage at strips 240 V
  Amp draw of strips 22.6 A
  Return-air temperature 65 F
  Supply-air temperature 120 F
 
  A) The air flow is 312 CFM; No, the air flow is too low.
  B) The airflow is 336 CFM; No, the air flow is too low.
  C) The air flow is 312 CFM; Yes, the air flow is at the recommended level.
  D) The airflow is 336 CFM; Yes, the air flow is at the recommended level.

Question 2

Some water source heat pumps contain a separate coaxial coil for heating domestic hot water. The heat for the domestic hot water comes from
 
  A) a submersion style electric heater
  B) subcooling the liquid leaving the condenser
  C) de-superheating the hot gas leaving the compressor
  D) using the water heating coil instead of the loop in cooling


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

daiying98

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


ssal

  • Hero Member
  • *****
  • Posts: 572
Reply #2 on: Jul 27, 2018
TY


daiying98

  • Sr. Member
  • ****
  • Posts: 354
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Upper Airflow and Weather Forecasting Upper Airflow and Weather Forecasting
How to calculate simple interest (Part 2) How to calculate simple interest (Part 2)
How to calculate present value using the compound interest formula (Question 2) How to calculate present value using the compound interest formula (Question 2)
. Calculate the net electric field at point B . Calculate the net electric field at point B
In a Millikan experiment, a 6.89E-14 kg charged oil droplet is suspended in the electric field ... In a Millikan experiment, a 6.89E-14 kg charged oil droplet is suspended in the electric field ...
calculate the quantities required to make 5 lb of hydrophilic ointment: calculate the quantities required to make 5 lb of hydrophilic ointment:
Video: Net filtration pressure and lymph formation, edema & blood velocity

For a complete list of videos, visit our video library