Solar air conditioning project and questions

[Psycogeek]

AHHH, so basically its the gas turning back into a liquid.

[Psycogeek]

yes there is a hot and cold side.

its just to reach the "efficiency" level of the beast, i am going to need to pull the heat off much faster.

when i first fired it up with lotsa amps, the hot side, just transfers heat to the cold side (with the sinks), so i at LEAST had to slow it way down.

with the little tiny one on the big sink, taking the heat away, was possible even in passive.

it will take a whole lot more stuff ($$$$) to get the test of this one done now :-(

lets see copper water block, heat pipes, pump, fans  , UGGG

they say that a heat pipe can transfer heat MANY times better than copper, because of the liquid movement.

what i am using is 2 sinks that have thick copper base plates about 1/4"

and a whole lot of aluminum fins.  the peltier is just pressed between them.

i re hooked up the small one, and it works good.

[Psycogeek]

looks like sombody, is working on putting a vaccume

between the two surfaces, to reduce this bad problem

http://www.coolchips.com/technology/ccalc.shtml

20 million dollers later, they may get the efficiency up a tad :-)

[Kwazai]

One of my other posts is in regard to a large case fan as a genny, but what I was actually getting at with it was to run a cpu fan from natural draught convection. It is a ridiculously small air movement, but it seems like someone is always chunking old computers (free parts....). maybe a pv-cpu fan would help with the peltier (either hot or cold side..)

L8r

Mike

[Psycogeek]

well i have an update on this.

the 370W peltier, i finally got operational with a heatsync that is 2 FEET high :-)

and the "cold plate" which is a smaller sync, still doesnt get cold for crud.

i keep re-testing the LITTLE tiny ones, and they are very efficient.

i assume that is has more to do with the transmission of the heat, than anything.

but it could be that this 370W thing is just a piece of junk :-(

even with a 2foot heat sync, Passive is still not good enough. a slight breeze by a fan improves it instantally and proves that passive is not very efficient.

one of the small units seperated :-( the solder came undone from to much heat, right before i soldered the tip of my index finger with it (OU-$%@^*#-CH)

my Opinion at this point is that it will be efficient and more feasable with a array of SMALL units spread out.  OR something that has many junctions but VERY sparsly populated across its surface.

like if it was possible 2 junctions (total) on each Sq inch of heat sync, instead of 400 junctions in 2 square inches.

if i get more available funds, i can continue to test a small spread.

untill then that is all i found out.

anything that can use the sun to move freon would be FAR more superior.