Thread: Cooling A Room
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Unread 24-05-2007, 12:40
Qbranch Qbranch is offline
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AKA: Alex
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Re: Cooling A Room

As a followup, I did some research on the idea of the Thermoelectric air conditioner... For a home user, or anyone with a head between their shoulders, a 6000+ BTU moving-parts-free near-silent air conditioner is out of the question. However, a personal portable air conditioner could run for about 2 hours off of an MK-12 and produce about 1000BTU/h of cold air.

Anyhow, here's my ridiculous research on my doomed 6000+BTU/h peltier effect air conditioner:

Code:
Thermoelectric Air Conditioner Project Notebook

Desired:

6000+ BTU Thermoelectric Air Conditioner with Near Silent operation and minimization of Moving parts. There are 3.41 BTU/h in one watt.

PartsList:

> 22 - "PJT-7" 40x44mm (1.57x1.73") Peltier Junction Array, 80.6W each. @ $14.75/ea, AllElectronics.com
	-whole array size @ 6x4, 9.45x6.93"
> Plywood or MDF for Enclosure @ Free~$10
> ProPink Rigid Foam Insulation (http://owenscorning.com/around/insulation/products/propinkrigid.asp) @ $Free~7
> 4 - (2 per side) Antec TriCool 120mm DBB Fan available Fry's @ $12.99/ea
> 18 - (9 per side) Heavy Duty Aluminum Heatsink Trapezoid 4x2.5x2.25" @ $3/ea
> Cosel Modular Power Supply, 3200W, (http://www.trcelectronics.com/Cosel/modular-power-supply-max.shtml) @ $1500/ea

>Grand Total Cost (Maximum)
	- $1976.96 (add in random stuff, probably $2050)

Power Requirements:
> @12VDC, each junction package requres 6.71(6repeating) amps
	- Total Junction Ampereage: 161.19999A
	- Total Junction Wattage: 1,934.4W
> @12VDC, each fan requires 250ma
	- Total Air Handling Ampereage: 1A
	- Total Air Handling Wattage: 12W
> Grand Total
	- Total Air Conditioner Watts: 1,946.4W
	- Total Amps @ 12VDC: 162.2A
	- Total Cooling Capcity: 6,596.304BTU/h

Conclusion:
	> While a giant near 7000 BTU near silent Peltier cooler like this is an extremely impractical idea, 
(now apparent to me), a scaled down model of this, perhaps a 3000 btu model, would cost $300 approximately,
 much more in the range for an air conditioner in power requrements as well as cost. Also, a portable conditioner 
would be a much easier feat, at around 1000 btu, most likely with a cost of $100 and the ability to be carried around 
portably... if you don't mind lugging along an MK-12 :o ... but thats what wagons are for!
Well, try not to laugh too hard...

But I still think i'll try the personal walkabout air conditioner, sounds like a good thing for a hot indiana summer.
-q
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Last edited by Qbranch : 24-05-2007 at 20:17.