How to calculate the CFM to TR?
What is the Formula
Answers were Sorted based on User's Feedback
Answer / thirukumar
each TR = 400 CFM
200 Sq.ft = 1 TR ..... 150 to 200 Sq.ft = 1TR
|Is This Answer Correct ?||281 Yes||65 No|
Answer / sastha
|Is This Answer Correct ?||236 Yes||21 No|
Answer / co
1 TR= 400 CFM
EX. 10000CFM/400= 25 TR
|Is This Answer Correct ?||87 Yes||12 No|
Answer / shashi
inorder to calculate tr you can use following formula:
Delta T in F X Flow in USGPM / 24
|Is This Answer Correct ?||70 Yes||28 No|
Answer / nagabhooshana p
1 tr = 400Cfm as a rough estimate
|Is This Answer Correct ?||45 Yes||7 No|
Answer / mahendra patil
1tr =? btu
|Is This Answer Correct ?||36 Yes||18 No|
Answer / sreenivasa rao avupati
We have to do Heat load calculation where we can achieve at
Grand total heat ( Sum of Grand Sen Heat + Grand Lat Heat).
TR = (GTH*1.05)/12000 TR - GTH in Btu/Hr
Calculation of TR from CFM is a thumb rule and dependa upon
inside design conditions. For Comform applications ( DBT-
Inside 2DegC & 55% RH we amy consider 400 Cfm per 1 TR).
In case of low temperature ( DBT:23+/-2 Deg C and RH <50%
this can be 250 to 300 Cfm per 1 TR.
But my recommendation is to do rough Heat load calculation
which can give the appropriate TR requirement.
|Is This Answer Correct ?||23 Yes||5 No|
Answer / ramakrishna m.r.
each TR = 350 to 400 cfm as per manufacture
150 to 170 Sq.ft = 1 TR should not cross more than 180 sq.ft
|Is This Answer Correct ?||35 Yes||21 No|
Answer / mahesh
Actually we are following the 1 TR =400 CFM consider it should be re-circulation system, because of we consider less T.R compare to Once-through system ,so 200 to 300 CFM for 1 T.R suitable for Once-through system.
otherwise 400 CFM consider for Once-through system AHU Capacity will be increased.so better to consider 200 to 300 CFM for Once-through AHU's.
Any answer or formula recording above concept ,please share
|Is This Answer Correct ?||4 Yes||1 No|
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