Recent content by walterjw

many thanks - does a candle flame burning just under a saucer & it leaves a black (?carbon) deposit illustrate your point, vary the flame distance from the saucer & its a circle or a ring - all I need to do is to validate my statement in my one web page on H2 fuel (90%) as stated in...

Many thanks for all your posts - I am going to try & get a 1965 textbook on thermo & combustion & see if I can then post what was printed.

The question is eg take Propane as an example of a Hydrocarbon fuel (HCF), formulae is C3H8 & when burnt +5O2 + 18N2 it gives say 50,350 KJ/Kg. What is the % of that 50,350KJ that came from the H2 - the remainder must be carbons contribution as O only supports combustion and N is an inert gas...

From my calculation in the 1960's the 90% was for H2 and the other 10% for the heat provided by the Carbon - many thanks for the link. Calculations were much easier in the 60's we only knew a little about a lot - now?

Are you into Politics? standard procedure for them is - if you don't understand a question ask another

:smile: 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...