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Thread: Ahu cooling coil row calculation
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23-09-2012, 04:48 PM #1
Ahu cooling coil row calculation
is there any thumb rule for the no of rows for chilled
Water
or dx cooling coil in ahu
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23-09-2012, 11:14 PM #2
Re: Ahu cooling coil row calculation
Not that I know of.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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21-02-2013, 08:39 AM #3
Re: Ahu cooling coil row calculation
Well, if its dealing with full fresh air, a min of 8 row deep is suggested, and for recirculation type with 10-15% fresh air, go with 4 row deep.
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21-02-2013, 08:43 PM #4
Re: Ahu cooling coil row calculation
Surely, if it's full fresh air then you want to maximise the bypass factor so as not to over cool the space ?!
If so then reduced rows are called for.Only the dogmatist says he will never change his mind. We all know that some of our opinions are wrong but none of us know which they are for if we did then they just wouldn't be our opinions. - JS Mill.
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21-02-2013, 08:49 PM #5
Re: Ahu cooling coil row calculation
Shouldn't worry Marc, he's a one post wonder from last September
Although, of course, your observation is valid.Brian - Newton Abbot, Devon, UK
Retired March 2015
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21-02-2013, 09:07 PM #6
Re: Ahu cooling coil row calculation
Brian, I guess it would also depend on occupancy numbers versus load. The higher the occupancy the greater the BPF required. A low occupancy but with a high load would indeed mean more rows required if one wanted smaller ducts and fan i.e. low air volumes.
Only the dogmatist says he will never change his mind. We all know that some of our opinions are wrong but none of us know which they are for if we did then they just wouldn't be our opinions. - JS Mill.