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

Author Question: What size should the combustion air openings be for a room with an 80,000 BTU/hr input furnace and a ... (Read 161 times)

ashley

  • Hero Member
  • *****
  • Posts: 584
on: Jul 24, 2018
What size should the combustion air openings be for a room with an 80,000 BTU/hr input furnace and a 35,000 BTU/hr water heater if the openings are opening directly into a ventilated attic and a ventilated crawlspace?
 
  A) The size is irrelevant so long as there are combustion air vents.
  B) 115,000/1,000 = 115 sq in free area each
  C) 115,000/2,000 = 57.5 sq in free area each
  D) 115,000/4,000 = 28.75 sq in free area each

Question 2

What type of fan is used in most air-cooled condensing units?
 
  A) A draw-through propeller fan
  B) A blow-through centrifugal fan
  C) A draw-through centrifugal fan
  D) No fanmost condensing units are natural draft.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

A


ashley

  • Hero Member
  • *****
  • Posts: 584
Reply #2 on: Jul 24, 2018
Thank you!


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #3 on: Jul 24, 2018
Always glad to help...


« previous next »
 

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Colostomy. Alternate versions of colostomy are illustrated, each of which creates one or more new op Colostomy. Alternate versions of colostomy are illustrated, each of which creates one or more new op
Cleaning the Examination Room Cleaning the Examination Room
Population size, 1970 - 2050 Population size, 1970 - 2050
The Size Of Your Baby’s Stomach The Size Of Your Baby’s Stomach
In a room where g = 9.81 m/s2, a hockey puck slides off the edge of a platform with an initial ... In a room where g = 9.81 m/s2, a hockey puck slides off the edge of a platform with an initial ...
What is the mass of air in a room that measures 5.0 m 8.0 m 3.0 m? (The density of air is ... What is the mass of air in a room that measures 5.0 m 8.0 m 3.0 m? (The density of air is ...
Video: Sex-Linked Traits! How are eye colors inherited in fruit flies?

For a complete list of videos, visit our video library