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Dan Drakulich
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Join Date: Jan 2007
Location: Valparaiso,Ind
Posts: 1

Natural Gas Calculation

06/24/2007 8:18 AM

I need a formula to convert cubic meters per hour to mmbtu per hour . Example 100 cu m /hour x 700 hours / month = X mmbtu/month .......Thanks !

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Anonymous Poster
#1

Re: Natural Gas Calculation

06/25/2007 2:02 AM

Natural gas contains 951 Btu/SCF (33580 Btu/M3) LHV and 1070 Btu/SCF (37780 Btu/M3) HHV.

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Yani
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Popular Science - Weaponology - New Member United States - Member - New Member Engineering Fields - Automotive Engineering - ChemE in a ME world

Join Date: Mar 2007
Location: Detroit, MI USA
Posts: 150
#4
In reply to #1

Re: Natural Gas Calculation

06/25/2007 10:27 AM

Hello Guest

The BTU value of natural gas can vary considerably! Particularly if its comes from a gas plant which has stripped it. I have seen it drop below 800 BTU/SCF and as high as 1100 BTU/SCF.

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bosko
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Engineering Fields - Piping Design Engineering - New Member

Join Date: Feb 2007
Location: Serbia
Posts: 4
#2

Re: Natural Gas Calculation

06/25/2007 4:08 AM

Answer is very simple:

Heating Value (HV): 33580 Btu/Scm=951 Btu/Scf

Power: P=Q*ETA*HV, Btu/h

Q - Flow capacity (in your case 100 Scm/h=3531.5 Scf/h)

ETA=70-80 % (HEATING EFFICIENCY)

P=3531.5*0.8*951=2.68 MMBtuh

P=2.68 * 700 = 1,876 Btu/month

Hope, that it is satisfactory.

Regards,

Bosko Jeremic, M.Sc.Mech.

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bosko
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Join Date: Feb 2007
Location: Serbia
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#3
In reply to #2

Re: Natural Gas Calculation

06/25/2007 4:23 AM

Sorry,

Mistake, P=1,876 MMBtu/month

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Anonymous Poster
#5
In reply to #3

Re: Natural Gas Calculation

05/09/2008 10:08 AM

How many Bts's of natural gas is required to heat 800 cubic feet of air to get 250F
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Anonymous Poster
#6

Re: Natural Gas Calculation

06/15/2009 11:56 AM

Not much of an engineer then ...are you?
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