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:rofl: Hi I did this simple calculation as a mature student in 1965 & now I need to prove my statement. 'In most hydrocarbon fuels the combustion of Hydrogen H2 gives about 90% of the toal heat'

Eg Propane C3 H8 gives 50,350 KJ/Kg, H2 gives 141,790 KJ/Kg I know Carbon is a lump of black stuff like coal which is a hydrocarbon fuel & gives 15 - 17,000 KJ/Kg.

How true use it or loose it - more on H2 on my web page

http://myweb.tiscali.co.uk/h2energy4all" [Broken]

- looking for an elderly puzzled smiley.:rofl:

Eg Propane C3 H8 gives 50,350 KJ/Kg, H2 gives 141,790 KJ/Kg I know Carbon is a lump of black stuff like coal which is a hydrocarbon fuel & gives 15 - 17,000 KJ/Kg.

How true use it or loose it - more on H2 on my web page

http://myweb.tiscali.co.uk/h2energy4all" [Broken]

- looking for an elderly puzzled smiley.:rofl:

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