I'm curious if this concept could be pushed further, with modern
material and technology. Just to throw out an idea, a very well
insulated room with a pipe running in the center of the room vertically
to the ceiling, then horizontally to the outside down to the ground then
back to the center of the room. Circulate a liquid through the pipe. On
the outside the pipes use the evaporation concept to cool the liquid
which circulates to the center of the room. The pipe/evaporation
scheme would be duplicated as many times as required for the room.
I wonder if the liquid could be self circulating just by temperature
difference alone. Are there materials that could be used for the
evaporative sheets that are more efficient.
In the end it's a swamp cooler, but we don't want the evaporated moister
inside the room, we do want the cooled liquid
in the pipe circulated into the room.
Your ideas welcome.
Mikek
Dias Analytic
https://www.google.com/search?num=1....0.0.0.182.182.0j1.1.0...0.0...1c.boGF2uLShRo
has a process that uses a membrane to suck moisture out of the air
without condensing
it or changing the temperature. Then they put the air thru a swamp
cooler to
cool the air and put the moisture back.
A year ago, they had the DoE interested enough to give them a bunch of $$$$.
But the steady decline in stock price suggests that things may not have gone
so well since.
If you have a hot area and a cold area, you can move the heat from one
area toward the other.
Normal technology requires some kind of heat exchanger.
The problem is that the hot area is typically higher in elevation
than the cold area. Efficient heat exchangers, like heat pipes,
work better moving heat upward. That requires some motive power
to reverse that process.
I've made some heat exchangers for a heat recovery ventilator using
copper pipe and freon. The pipes work amazingly well. Problem
is getting the heat from the air into the pipe with stuff you can build
in your garage. Suggestions welcome.
For air to air exchange, DIY units made out of Coroplast give a lot
of bang for the buck. Would be interesting to try to make an air to
water one.
Would take a LOT of caulk to patch up all the leaks. Or just use a car
radiator.
Bottom line is that your best investment is insulation. If you have
EXCELLENT insulation, simple schemes like pumping water around have
a better chance of working, but the amount you save is small.
Do the math. Takes a LOT of water to mediate the daily temperature
change, even if you do have the right climate for it.
If you do the math, it's likely that anything you do with retail cost
parts isn't cost effective. It then becomes a hobby exercise in what
you can do with what you have on hand or available for free.