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Question
```How to calculate the CFM to TR?
What is the Formula```
Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By

# 1
each TR = 400 CFM
thumb rule
200 Sq.ft = 1 TR ..... 150 to 200 Sq.ft = 1TR

 Is This Answer Correct ? 58 Yes 17 No
Thirukumar

# 2
1tr =400cfm
 Is This Answer Correct ? 36 Yes 5 No
Sastha

# 3
inorder to calculate tr you can use following formula:

Delta T in F X Flow in USGPM / 24

 Is This Answer Correct ? 42 Yes 23 No
Shashi

# 4
1 tr = 400Cfm as a rough estimate
 Is This Answer Correct ? 24 Yes 9 No
Moinuddin

# 5
1tr =? btu
 Is This Answer Correct ? 18 Yes 8 No
Mahendra Patil

# 6
each TR = 350 to 400 cfm as per manufacture

thumb rule

150 to 170 Sq.ft = 1 TR should not cross more than 180 sq.ft

 Is This Answer Correct ? 23 Yes 15 No
Ramakrishna M.r.

# 7
1 TR= 400 CFM

EX. 10000CFM/400= 25 TR

 Is This Answer Correct ? 10 Yes 3 No
Co

# 8
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.

Regards,

 Is This Answer Correct ? 9 Yes 4 No
Sreenivasa Rao Avupati

# 9
1 tr = 400Cfm as a rough estimate
 Is This Answer Correct ? 6 Yes 2 No
Nagabhooshana P

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