conversion of natural gas MMBTU to flow rate
conversion of natural gas MMBTU to flow rate
(OP)
If I have a burner that flows X amount of MMBtu/hr how do I convert from MMBTU to lb/hr?
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conversion of natural gas MMBTU to flow rate
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conversion of natural gas MMBTU to flow rateconversion of natural gas MMBTU to flow rate(OP)
If I have a burner that flows X amount of MMBtu/hr how do I convert from MMBTU to lb/hr?
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RE: conversion of natural gas MMBTU to flow rate
RE: conversion of natural gas MMBTU to flow rate
RE: conversion of natural gas MMBTU to flow rate
Why must everything be available on the internet? Perry's Chemical Engineers' Handbook (in any good library) has heats of combustion for a great many (over a hundred) hydrocarbons.
On the Internet, go to the NIST Chemistry WebBook at http://webbook.nist.gov/chemistry/. For example:
(1) Go to that website and click on "name". Then enter methane and select "Gas Phase" and "Thermodynamic data". Then press "Search".
(2) You will then find the molecular weight of methane to be 16.04 and the ΔcHo of the methane gas to be 891 kJ/mol ... (where ΔcHo is the gross or higher heat of combustion and the mol is a gram-mol).
(3) Multiply kJ/mol by (430.12/molecular wt) to obtain Btu/lb. Thus, the gross heat of combution for methane is (891)(430.12/16.04) = 23,893 Btu/lb.
Follow the same procedure for any other gas for which you want the same data.
Milton Beychok
(Visit me at www.air-dispersion.com)
.
RE: conversion of natural gas MMBTU to flow rate
Pay attention to what this site tells us about the Lower Heating Value:
http://en.wikipedia.org/wiki/Lower_heating_value
RE: conversion of natural gas MMBTU to flow rate
Natural gas is not purely methane. Most natural gas includes ethane, propane, butane and condensates once called "drip gas" or gasoline. Some gas includes carbon dioxide, hydrogen sulfide, etc. Natural gas processing plants extract liquids to sell as Natural Gas Liquids or liquified petroleum gas such as propane and butane. Older plants may only extract the heavier molecules but the turbo-expander plants extract most of the ethane too. However the interstate pipelines have a minimum btu/cf value. I think that the contracts require over 1030 btu per cubic foot. The bigger molecules have a higher heating value per cubic foot. Sufficient ethane or such must be left in low btu gas to exceed the 1030 or so minimum.
http://hypertextbook.com/facts/2002/JanyTran.shtml
RE: conversion of natural gas MMBTU to flow rate
best wishes,
sshep
RE: conversion of natural gas MMBTU to flow rate
RE: conversion of natural gas MMBTU to flow rate
Best reagards Morten