h a l f b a k e r y
Renovating the wheel
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
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
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 Ive not seen one working -
Im sure youll 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.
Im vaguely hoping to build a prototype and produce free
build plans for developing nation uses - Apropriate
||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.
||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.
||//Appropriate Technology// You need to talk to the Chinese -
they've been appropriating technology for a couple of decades
||[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?)
How do you say "Sorry, won't happen again!" in Mandarin?
||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