Gravity fed heating systems

Although you are back to needing more electricity, then.

Christian.

Reply to
Christian McArdle
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On 30 Jan 2005 18:59:33 -0800, snipped-for-privacy@meeow.co.uk pondered and came up with the following nugget of wisdom :

But not a marine diesel running at about 2000 rpm under lightish load (the BMC 1.5 has a max governed speed of under 4000rpm). The return pipe from the skin tank on the hull is usually cold enough to hold even after a long day as its sitting in water thats not very hot and does a much better job at taking away the heat than air.

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Its should be poss to do it without doing any serious mods, so that

Steve

Reply to
Steve Atty

coolingcircuit.

exhaust

How would that up the efficiency of an IC engine? Theyre still well below 50% efficient, and the exhaust from the cylinders is still hot. Very hot.

NT

Reply to
bigcat

The potentialthermal efficiency of a heat engine is pretty much related to teh temperature of teh gases that leave the exhaust port.

What hapens to them after that is irrelevant.

Essentialy teh combustin mix is cooled by adiabatic cooling as it expands and does work: That is the heat energy converted to mechanical energy.

Best efficencies are mult-stage turbine, ecah one adapted to the temp and pressure of the steam,and the final one aiming to condense teh steam,with condenser used to almost provide a vacuum at teh back end to really cool tehliquid down.

Over 50% is possible with such.

An ICE is nowhere near that,although by dint of extremely high combustion temperatures and pressures, it can do quite well.

Reply to
The Natural Philosopher

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