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

Author Question: Which of these devices is used for energy conservation? a. Humidifier b. Electronic air cleaner ... (Read 62 times)

Frost2351

  • Hero Member
  • *****
  • Posts: 557
Which of these devices is used for energy conservation?
 
  a. Humidifier
  b. Electronic air cleaner
  c. Heat recovery ventilator
  d. Chiller

Question 2

Oxygen is never used to purge an HVAC system because _____.
 
  a. oxygen will contaminate the system
  b. an explosion could occur under certain conditions
  c. oxygen contains too much moisture
  d. oxygen is too expensive to use for that purpose



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

raili21

  • Sr. Member
  • ****
  • Posts: 324
Answer to Question 1

c

Answer to Question 2

b




Frost2351

  • Member
  • Posts: 557
Reply 2 on: Jul 24, 2018
Wow, this really help


bulacsom

  • Member
  • Posts: 329
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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?

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.

For a complete list of videos, visit our video library