h a l f b a k e r y
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
Please log in.
Before you can vote, you need to register.
Please log in or create 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