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Anonymous Poster

CFM Calculation

05/17/2010 7:06 AM

how to calculate CFM for a heat generated 5KW
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JohnDG
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#1

Re: cfm calculation

05/17/2010 8:04 AM

CFM of what?

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ducon
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#2

Re: CFM Calculation

05/22/2010 7:24 AM

6 cfm at 100 psi = 1 kw

1cfm at 100 psi = 3.8 hp

1 cfm = 9.5 btu/ft3

1 kw = 3414 btu 1 hp = 0.746 kw

150 cfm x 9.5 btu/ft3 x 60 m/h x 24 h/day = 2.052 mmbtu/yar divided by 3414 btu/kw = 600 kw/day x $/kw = cost/day.

(now calculate in reverse tio get cfm).

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meadik
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#3
In reply to #2

Re: CFM Calculation

05/23/2010 8:02 AM

Sir, may i know what kind reference you get that conversion?

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ducon
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#4
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Re: CFM Calculation

05/23/2010 12:41 PM

6 cfm at 100 psi = 1 kw & 1cfm at 100 psi = 3.8 hp - Spirax information books on Compressed air

1 kw = 3414 btu 1 hp = 0.746 kw international CONVERSION TABLES

1cfm = 9.5 btu/ft3 &

150 cfm x 9.5 btu/ft3 x 60 m/h x 24 h/day = 2.052 mmbtu/yar divided by 3414 btu/kw = 600 kw/day x $/kw = cost/day.

Energy Tips - scanning the Internet

(now calculate in reverse tio get cfm).

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Anonymous Poster
#5
In reply to #2

Re: CFM Calculation

06/01/2010 3:33 PM

For normal air flow for heating = 12 CFM /1000 BTU

5 KW x 3413 BTU/kw =17,065 BTU so

17,065/1000 =~ 17 x 12 = ~ 204 CFM for heating
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ducon
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#6
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Re: CFM Calculation

06/02/2010 5:26 PM

Gr8. Atta boy Guest - you the man

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