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Absorption refrigerators are really interesting. It seems
counterintuitive that you can use a heat source to drive a
cooling cycle, but there are many examples. Caravans and
motorhomes often have propane-powered fridges. A small
flame drives an evaporation-absorption cycle that removes
heat
from the interior - see Einstein-Szilárd fridge patent
for an example.
Perhaps not a new idea, (I have looked and found people
talking about building one) but I’ve not seen one working -
I’m sure you’ll all put me right in no time!
A solar collector focuses heat onto a regenerator, driving a
(for instance) low-pressure ammonia refrigeration cycle.
No pumps, electronics, moving parts.
Low tech, cheap working fluids, ideal for remote, sunny
locations - perhaps temperature-sensitive medical supplies
in remote places.
I’m vaguely hoping to build a prototype and produce free
build plans for developing nation uses - Apropriate
Technology.
[link]
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Yes, it's Baked. But because of the energy source, it only works effectively for half the day - unless you have something like a molten salt reservoir. |
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That means bulk and cost, to deliver functionality that can be better achieved with a battery, a photovoltaic collector, and a compressor heatpump - which is much more energy-efficient for the same cooling transfer. |
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//Appropriate Technology// You need to talk to the Chinese -
they've been appropriating technology for a couple of decades
now. |
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[MaxwellBuchanan] I read an article a while ago that
suggested that, because of the rampant "reverse
engineering" and blatant copying of others' designs, Chinese
engineers aren't actually taught how to innovate; and as
such, they don't know how to come up with their own
original ideas. (It is probably a load of rubbish, but it makes
a good story...)
(On that note, I wonder if the Great Firewall of China lets
the halfbakery through?) |
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Hmm.
How do you say "Sorry, won't happen again!" in Mandarin? |
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So, we should simply place all of our technological
breakthroughs on website servers laced with pro-
democracy / Falun Gong / Tibet / Uyghur / Hong
Kong freedom movement /Tienanmen Square
propaganda... |
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