This topic contains a solution. Click here to go to the answer

Author Question: Why can oil furnaces operate at higher efficiencies than gas furnaces without condensing water in ... (Read 190 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
Why can oil furnaces operate at higher efficiencies than gas furnaces without condensing water in the heat exchanger or vent?
 
  A) Oil furnace heat exchangers are inherently more efficient.
  B) Oil furnaces burn hotter.
  C) The flue gas contains only half as much water as flue gas from a gas furnace.
  D) Unlike gas, no water is mixed with the oil during the combustion process.

Question 2

When a geothermal heat pump system uses antifreeze in the loop, how is antifreeze added to the loop?
 
  A) By pumping the antifreeze in under pressure
  B) By pouring the antifreeze in the loop after it is connected
  C) By temporarily connecting a purge unit
  D) By pouring the antifreeze in the loop before it is connected



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

welcom1000

  • Sr. Member
  • ****
  • Posts: 298
Answer to Question 1

C

Answer to Question 2

C





 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

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

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

For a complete list of videos, visit our video library