WE BE figJAMMIN!! Yeah buddy! 30 Degree differential! Welcome to the boom boom tent, the nookie time has officially been extended into the afternoon!
I'd post the evidence but I can't seem to figure out how to post pics...help!
I made a few deviations to utilize some things I already had. I didn't want the Costco battery because of the expense and because I'd only use it once a year. I'd then have to buy a trickle charger to store it too.
Here's what I came up with:
Pump, 3.5-9V with USB plug: http://www.amazon.com/Submersible-Aquar ... s=usb+pump
I picked this pump because it had a USB plug on it and I've already got a 18Ahr lithium battery pack for charging cell phones. Running it at 5V instead of the max 9V halves the max flow rate and head. As long as you fill the bucket as much as possible you lower the head as much as possible. This tiny little thing is probably giving me about 10 gpm installed in the cooler. I'm using 5/16"id line with a 3/8" tee. I drilled holes 1/2" apart with a 1.5mm bit (similar size to 14ga wire).
Fan: http://www.coolingsurplus.com/index.php ... s&Itemid=8
I bought mine on Ebay for $18 shipped.
I looked at fans for hours and developed these thoughts:
1. I'm Not worried about how loud it is. The playa is plenty loud and I'll probably have ear plugs in anyway. 30dB or 50db I don't care.
2. Pressure seems to be related to fan rpm. The higher speed fans have higher pressures. If you're not picking Figjam's fan, find one with, I would say, RPMs over 4000.
3. Current ratings for fans are all over the place, a low current fan might sound nice 'cause the battery will last longer but are the flow rate and pressure high enough?
4. Fans are only designed to work one way. While you can wire it backwards and just flip the fan, you'll loose about 20% of it's efficiency, or so I've read. Look closely at the fan case and there should be two arrows. One indicates rotation and the other indicates which way the air should blow. Wire the fan to follow these arrows.
5. Ultimately I picked this fan because it had a pretty high pressure rating for the relatively low 1.05A draw.
I used a toilet flange on top that accepts a 4" sewer line. It actually measures about 5" in diameter which matches up pretty close to the 120mm fan. A normal 4" toilet flange is too small for the 120mm fan. I sealed everything up with caulk. I massaged a 4" rubber coupler over the flange and set a flexible, yet ridged, 4" aluminum duct on top. I used a bucket that I already had and bought a lid at Lowes. The lid is flimsy and I later saw a much sturdier food grade lid at Home depot.
I'm running the fan off of an 18Ahr auto jump pack. This probably won't be enough but I have a 12V solar panel that puts out 0.2A I think if I leave the panel plugged in all day I should be able to get through the week. I can also top it off using a generator that I'll have running to provide tunes during happy hour.
I secured the water loop to the top of the duracool with zip ties. I also used zip ties to connect the ends of the duracool. I decided to run one layer of duracool first to see how it would perform. This only got me about a 23 degree drop. The weight of the water on the pad caused the pad to sag a bit and I figured that air was short circuiting the pad because it wasn't pressed up against the bottom of the lid. I ziptied the pad and cooling loop to the bottom of the lid. While I like this because it definitely creates a good seal, it didn't help get my temp down any further. I added a second layer of pad and POOF, 30 degree land!
Thanks Figgy!, this will for sure extend my tent time. Last year was my first and, no joke, I don't think I slept more than 20 hours the entire week. As Nelly would say, "It's getting hot in hurr." And I did
take off all my clothes. Then I was just naked and hot still and couldn't sleep. Not this year, I'll be naked and comfortable. Well things are gonna get sweaty still but bucket cooler can't cure that! Ha, thanks again!!!!!!!
Burn Burn yes you're gonna Burn.