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NYNick

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Posts: 95
Reply with quote  #51 
Has anyone any experience with Hydrogen as a heat source? There are a few DIY water powered hydrogen furnaces out there but very little info. Anyone?

Nick

jamieF

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Posts: 260
Reply with quote  #52 
every example of hydrogen from water I've ever seen was a case of it would be better to just heat directly with the electricity used to split the water.
Garage_Hermit

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Posts: 2,239
Reply with quote  #53 
I just saw this, and noted that I did not respond to Item #51 (just saw that also...)

So 1st off, apologies to George for the math (altho' I did not realize I had actually used any...)

Regarding the potential effect of pulling a partial vacuum in (presumably) twinwall acrylate, I found this link on the subject:

https://forums.energymatters.com.au/alternative-building/topic2411.html

Quote:
"A vacuum certainly cuts the heat transfer via conductance down, but not radiation... sunlight makes it all the way here through 150million km of vacuum! In any case, air is quite a poor conductor anyway".


Given the scant amount of data on the subject, George, I suspect that the only way to answer your question would be to run a side-by-side test with two identical specimens of glazing, one under partial vacuum, and one at atmospheric pressure, and compare the results.

G_H

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