In reply to Alain Sepeda's message of Mon, 6 Feb 2012 00:39:01 +0100: Hi, [snip] >for me it seems turbines are preferred, but the problem of radiators stay
I considered the option of not using a radiator at all, and just dumping the spent steam into the environment. A quick back of the envelope calculation reveals a (very rough) amount of water usage of 20 L / hr, which is not too much to carry on board. A 40 L "gas tank" would hold enough water for about 2 hours, after which it would need to be refilled with a garden hose. Any radiator used would extend this. (This assumes a high temp. of 400 ºC, and a Carnot efficiency of 57%). Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
