Answer / sastha

1tr =400cfm

Answer / thirukumar

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

Answer / moinuddin

1 tr = 400Cfm as a rough estimate

Answer / co

1 TR= 400 CFM

EX. 10000CFM/400= 25 TR

Answer / shashi

inorder to calculate tr you can use following formula:

Delta T in F X Flow in USGPM / 24

Answer / nagabhooshana p

1 tr = 400Cfm as a rough estimate

Answer / mahendra patil

1tr =? btu

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.

Regards,

Answer / ramakrishna m.r.

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

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

what is the difference between LT and HT power supply?

26 Answers   Center One Mall, Central University, JSW, Siemens, Suzlon,

If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a campus site?

2 Answers  

How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?

0 Answers  

What are the various types of BUSBAR Schemes? explain each

1 Answers   NTPC,

what is the difference between gas group b and gas group c electrical equipment construction wise?

0 Answers  

i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.

0 Answers   Bay Fishing Corporation,

I have 725KVA DG set how to Calculate the Ratio of KWH? Whatb is the Formila

7 Answers   HCL,

how does this job compare with others you have aplied for?

0 Answers  

KVAR Kilovolt-Ampere-Reactance

2 Answers  

What is the minimum load that you can keep in a 3 Phase 40 KVA Diesel Generator? Is it neccessary to load all the 3 phases? Can a phase be left without load?

2 Answers   DRDO,

What are the Return ( Monthly / quarterly/ Annual submitted to Electical Inspector for an establishment (Factory in Maharashtra-- Small scale category having seperate HT line of 22KV ) as per Maharashtra Electricity Act

0 Answers