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

Author Question: The difference between 80 efficiency furnaces and a 90 efficiency furnaces is that 90 efficiency ... (Read 145 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
on: Jul 26, 2018
The difference between 80 efficiency furnaces and a 90 efficiency furnaces is that 90 efficiency furnaces
 
  A) use more efficient air filters
  B) use more combustion air per 1000 Btu firing rate
  C) have an extra recuperative heat exchanger that condenses water out of the flue gas
  D) burn more gas to increase the heat exchanger temperatures

Question 2

Unbalanced seals have a _____ face loading than balanced seals.
 
  a. lower
  b. higher
  c. lighter
  d. more evenly distributed


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

EAN94

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

b


londonang

  • Member
  • Posts: 540
Reply 2 on: Jul 26, 2018
:D TYSM

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Flower part number is a characteristic difference between monocots and eudicots Flower part number is a characteristic difference between monocots and eudicots
Difference between Asian (left) and African (right) elephant ears. Difference between Asian (left) and African (right) elephant ears.
Difference between.... Difference between....
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
Difference of Squares Difference of Squares
E9-23 Prepare income statements Explain the difference in operating income E9-23 Prepare income statements Explain the difference in operating income
Video: Blood Test Basics

For a complete list of videos, visit our video library