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Heat Content of CNG 
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#1
Jan1509, 01:20 PM

P: 9

Working on a radiant heat calculation for CNG exiting a blow down stack (in case it was to flare).
Part of the calculation requires the heat content of the gas, and I am unsure of what number to use. 47.8 MJ/kg is the number I am currently using, but I am unsure if this is correct. This number was given as the heat content for CNG (which is what I am considering). However, by the time it is vented, is it not longer considered compressed natural gas? Any ideas on what number I should use, and where is a good directory of heat content values? Thanks. 


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