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Author Question: What was the most commonly used refrigerant gas for geothermal pumps for almost one hundred years? ... (Read 33 times)

hbsimmons88

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on: Jul 21, 2018
What was the most commonly used refrigerant gas for geothermal pumps for almost one hundred years?
 
 

a. chlorofluorocarbons (CFCs) c. carbon dioxide (CO2)
  b. hydrogen sulfide (H2S) d. methane (CH4)



Question 2

A device that utilizes the constant temperature of the ground near the surface of the Earth as a method of heating or cooling depending on the time of year is called a(n) ____.
 
 

a. heat sink c. radiational sink
  b. heat pump d. compressor pump



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KKcool

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Reply #1 on: Jul 21, 2018
Answer to Question 1

A

Answer to Question 2

B


hbsimmons88

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Reply 2 on: Jul 21, 2018
Thanks for the timely response, appreciate it

tkempin

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Reply 3 on: Yesterday
:D TYSM

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