Sounds a bit sus to me, cos a by product of the combustion of paraffin is
water vapour.
Brian

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From the Sofa of Brian Gaff Reply address is active
"john t west" wrote in message
...
Looking at how some people are protecting their Green Houses against the
frost, i was surprised how tiny the flames were on the paraffin heaters in
the green houses. They were hardly giving off any heat at all.

I was told its not about the 'Heat', but the fact that the flame changes
the 'relative humidity' in the air'.

Could anyone explain fairly simply, how this actually works? Thanks