Search found 372 matches

by kman
Thu Jul 01, 2010 3:47 pm
Forum: Keeping Cool
Topic: Solar Cooling
Replies: 30
Views: 7010

What battery are you going to use? If your just useing the 107cfm fan it only uses .5amps. A 55amp hour battery will run that fan for 50 hrs and be 50% discharged. Thats a deep cycle battery. Best for this purpose. Car batteries are not made for this purpose and it will shorten thier life or kill t...
by kman
Thu Jul 01, 2010 11:32 am
Forum: Power & Electronics
Topic: Wearing a watch on the playa (sand etc)
Replies: 20
Views: 1953

Camp Feeding Times

Our camp cooks group meals, so showing up when there's still food is important to me. I wear a watch. Never had a problem. All my watches are waterproof, so there's never been an issue of dust getting inside.
by kman
Thu Jul 01, 2010 11:19 am
Forum: Keeping Cool
Topic: cooling your tent or van
Replies: 4217
Views: 946634

FIGJAM wrote:Mine had the pump amps added to those base figures.
That's actually quite good news, if I end up getting the solar fountain pump to use with the bucket cooler. :)
by kman
Thu Jul 01, 2010 11:08 am
Forum: Keeping Cool
Topic: Solar Cooling
Replies: 30
Views: 7010

The solar pump from harbor freight is fine for the bucket cooler (42gph). The box is a little bigger, so is the pump (80gph) and can be powered with a battery or solar panel. I just hooked the fan and pump both to the battery. http://www.siliconsolar.com/solar-fountain-pumps.html scoll down the pag...
by kman
Thu Jul 01, 2010 11:05 am
Forum: Keeping Cool
Topic: Solar Cooling
Replies: 30
Views: 7010

Harbor freight has a discount on a 45 watt panel. No idea on quality, but it's chinese, so low. Yeah, I'd been eyeing that. I think, though, given my budget, I'm looking more at the many 40w panels I see on eBay for $100, rather paying $160 for the extra 5w: 40W 40 Watt Solar Panel Cells Made in Ja...
by kman
Thu Jul 01, 2010 9:05 am
Forum: Keeping Cool
Topic: Solar Cooling
Replies: 30
Views: 7010

The amp draws you quoted are with the pump hooked into the power system. The fan by it self is 1.18, 1.68, and 2.50amps. You can run the pump on a small solar panel, The sight says it uses .23amps. Which pump are you using, in this example? Did the nice little solar fountain pump from harbor freigh...
by kman
Thu Jul 01, 2010 9:01 am
Forum: Keeping Cool
Topic: cooling your tent or van
Replies: 4217
Views: 946634

Check this sight for the amp draw of the fan alone. http://www.metaefficient.com/cooling/endless-breeze-fan-12v.html Thanks! Interesting that your measured usage is a bit higher than what that site quotes, and your highest cfm is a bit lower. Your measurements: Low 250cfm 1.44amps medium 500cfm 2.0...
by kman
Thu Jul 01, 2010 8:56 am
Forum: Keeping Cool
Topic: cooling your tent or van
Replies: 4217
Views: 946634

@FigJam. If you really want to geek out, I got some dangerous words for you that can keep you busy for a while. Water Efficiency Dew Point Semi-closed System You can probably cut down water use to a fraction if you use block ice in the design. Phase change works in both directions so long as you ca...
by kman
Wed Jun 30, 2010 11:50 pm
Forum: Keeping Cool
Topic: cooling your tent or van
Replies: 4217
Views: 946634

[quote="FIGJAM"]Just checked the total amp draw on all three speeds. Low 250cfm 1.44amps, mediem 500cfm 2.08amps, high 900cfm 2.95amps. The bucket cooler was only .7amps, but for a wisker over twice that, im getting 1 1/2 times the cool air on low speed with the new cooler. I dont know anything abou...
by kman
Wed Jun 30, 2010 11:48 pm
Forum: Keeping Cool
Topic: Solar Cooling
Replies: 30
Views: 7010

First things first: Amps x Volts = Watts Figure your power draw and go from there. :) Well, if FigJam measured the fan as drawing: "Low 250cfm 1.44amps, mediem 500cfm 2.08amps, high 900cfm 2.95amps" ... then the solar panel I linked, pushing out 2.3amps per the specs listed, should be able to push ...
by kman
Wed Jun 30, 2010 5:51 pm
Forum: Keeping Cool
Topic: Solar Cooling
Replies: 30
Views: 7010

Solar Cooling

I almost posted this in the HexaYurt thread, but realized it probably applies more than just yurt dwellers who would bother reading that thread. :) I'm interested in nailing down cooling ideas my yurt (or your van, or tent or whatever) ... preferably those that don't involve responses like "buy an A...
by kman
Wed Jun 30, 2010 5:22 pm
Forum: Keeping Cool
Topic: cooling your tent or van
Replies: 4217
Views: 946634

[quote="FIGJAM"][url]http://www.lambertvetsupply.com/FanTastic-Vent-Endless-Breeze-12-Volt-Box-Fan--pr--010FTV01FAN[/url][/quote] Good price ($54), but shipping kills you... sure to be at least $10 if not more. Cheaper at Amazon, since it's $66 with free shipping. Not to mention as reliable as Amazo...

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