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Inspection Question of the Day These are inspection questions posted daily by members of InterNACHI's Educational Committee.

 
View Poll Results: .
A. non-toxic 2 20.00%
B. non-flammable 1 10.00%
C. absorbs heat 0 0%
D. does not vaporize 7 70.00%
Voters: 10. You may not vote on this poll

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  #1  
Old 12/12/11, 9:15 AM
Robert J. OConnor's Avatar
Robert J. OConnor Robert J. OConnor is offline
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Location: Long Island, NY
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Default QOD For W/E 12-18-11 #1
Continuing with some old cooling system questions ...

Q. A cooling system refrigerant should have all of the following properties except?


Robert O'Connor, PE
Consulting Engineer & Inspector
LIU CW Post Adjunct Professor
NACHI Education Committee
www.reporthost.com/-rjo

I am absolutely amazed sometimes by how much thought goes into doing things wrong ...
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  #2  
Old 12/12/11, 11:28 AM
Michael Larson's Avatar
Michael Larson Michael Larson is offline
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Location: Hudson, WI including the Twin Cities of MN
Posts: 32,090
Default Re: QOD For W/E 12-18-11 #1
Your question expresses the ideal.

Ammonia based systems are common and propane makes a great refrigerant.


You can argue with intelligent people but to argue with a mush head is like trying to grab fog-Thomas Sowell

Never underestimate the difficulty of changing false beliefs by facts. - Henry Rosovsky-Harvard

Michael Larson
Hudson, WI

Services provided in East MN and West WI

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  #3  
Old 12/19/11, 7:20 AM
Robert J. OConnor's Avatar
Robert J. OConnor Robert J. OConnor is offline
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Default Re: QOD For W/E 12-18-11 #1
The correct answer is ... D. does not vaporize

A refrigerant must vaporize in order for the system to work

That wraps up the heating and cooling questions


Robert O'Connor, PE
Consulting Engineer & Inspector
LIU CW Post Adjunct Professor
NACHI Education Committee
www.reporthost.com/-rjo

I am absolutely amazed sometimes by how much thought goes into doing things wrong ...
Reply With Quote
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