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Author Question: Which of these devices is used for energy conservation? a. Humidifier b. Electronic air cleaner ... (Read 32 times)

Frost2351

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on: Jul 24, 2018
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


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raili21

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Reply #1 on: Jul 24, 2018
Answer to Question 1

c

Answer to Question 2

b


Frost2351

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Reply 2 on: Jul 24, 2018
Excellent

samiel-sayed

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Reply 3 on: Yesterday
Wow, this really help

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