NICE WATER PUMP, and not too crazy expsnsive
On Sat, Jul 9, 2011 at 11:21 PM, Richard Ginn <[email protected]> wrote: > For 6 watts you can power a 12-volt CPU water cooling pump that is rated at > 132 gallons per hour, and then you don't have to wick the water at all: > > > http://www.frozencpu.com/products/6073/ex-pmp-53/Danger_Den_DD-CPX1_12V_3-Pin_Powered_Pump_-_DD-CPX1.html?tl=g30c107s153 > > > On Tue, Jul 5, 2011 at 5:11 PM, ken winston caine < > [email protected]> wrote: > >> Jack, I've experimented with developing a 7-watt, self-wicking swamp >> cooler >> that works pretty well. >> >> Haven't experimented with EVERY fabric known to man, but did find, >> surprisingly, that absorbant paper towels tended to wick better than about >> any cloth fabric I could test.But even., then, they tend to wick up only >> about 6 inches above the water surface. >> >> What really helps is to hang them with open pleats facing the air source >> and >> allowing a tiny bit of air space between each hanging wick. That allows >> the >> air to pass between them a tiny bit. If using a high-efficiency, >> low-wattage >> 12v fan made for use in RVs and campers, having the open end of the pleat >> facing the fan's exhaust also helps the pleats balloon a bit and speeds >> evaporation. >> >> My design provides 8 to 10 degree cooling for about 5 feet in front of the >> swamp cooler exhaust. So it's a personal cooler, not a room cooler. >> Although >> it does noticeably help cool the room a tiny bit, so long as you have >> fresh >> air vents in the room bringing in occasional super dry gusts. That's when >> you notice the moisture evaporating in areas of the room other than >> directly >> in front of the cooler. >> >> The more folds of wicking material you can fit in your box (if buidling a >> swamp cooler) the more cooling effect you'll get. >> >> Have yet to experiment with putting the fan on the top of the box, ponting >> down at the wicks and water tray on the bottom. Am planning to test that >> next. >> >> Have tried quite a few variations. Have found that the fan BEHIND the >> wicks, >> blowing air through them, provides better cooling than locating the fan in >> front of the wicks so that it *draws* the air through the wicks. >> >> Also have found that having a larger intake opening than exhaust opening >> seems to help a bit, too. About a 2::1 ratio has seemed best in my >> experiments. >> >> You can do these with cardboard boxes and duct tape and rubber maid >> shoe-box size plastic containers. >> >> The type of fan I use is this: >> >> http://www.campingworld.com/shopping/item/fan-tastic-endless-breeze-12v-fan/38132 >> >> I also found at the end of summer about six years ago at a Wal Mart in >> Albuquerque a season closeout price on Wal-Mart's "Ozark Trails" version >> of >> this fan and bought seven of them for $4 each and am using those in two of >> my swamp cooler. They actually use less wattage than the Endless Breeze, >> but >> push slightly less air through, too. >> >> May have been four years ago I wrote here about Buckminster Fuller's >> proven >> "cooling effect," but have not yet heard of anyone experimenting with it >> on >> the playa with hexayurts. >> >> Fuller proved that putting a rain-capped stovepipe in the center of the >> roof >> of his circular dymation house or at the apex of the roof of a geodesic >> dome, and then having open vents about 1 foot above floor level around the >> walls of the building created an amazing, counter-intuitive cooling >> effect. >> The ratio of low-wall vent airflow capacity to roof vent was about 4 to 1, >> if I recall correctly. >> >> What happens -- and Fuller demonstrated this multiple times, including in >> a >> dome at the equator built for the U.S. military -- is that as the ground >> around the building and the walls of the building heat up as the sun beats >> down, this creates a flow of warm air rising around the outside of the >> building. That rising air creates suction at the floor level vents, >> pulling >> air out of the building. That causes a rush of air to be pulled down into >> the building through the roof vent. >> >> Fuller said this phenomenon extends for hundreds of feet into the air >> above >> the building. So you have hot air rising in a circle around the building >> and >> COOL air from higher in the atmosphere hundreds of feet above the building >> being sucked down the center of the invisible column. >> >> The cooling effect was commonly reported to be in the range of 20 degrees. >> That is, the air coming in through the root pipe and dropping on the room >> had an effect of cooling the room by about 20 degrees from its temperature >> with the vents all closed. >> >> Pretty amazing. Completely passive (other than opening and closing vents). >> And, other than the initial cost to build (the pvc or stove pipe and rain >> cap and dampers), free. >> >> I say that this is counter intuitive because normally we expect interior >> heat to rise and exit through a roof vent. And normally it does. And that >> certainly helps exhaust heat from the room or building. But it doesn't >> bring >> in a nice, steady, flow of cool air that drops on the room from the >> ceiling. >> >> Hope that helps inspire someone to experiment and report their results. >> >> Best, >> ken winston caine >> >> >> ----- Original Message ----- >> From: "Jack Senechal" <[email protected]> >> To: <[email protected]> >> Sent: Monday, July 04, 2011 3:19 PM >> Subject: Re: [hexayurt] Windows >> >> >> I've used metal tape to fix a plexiglass panel to the outside, and it >> worked great. You could do two for better insulation, one inside and >> one out. And if you have two panels of plexiglass, you can bolt >> through them for extra solidity. But I think that might be overkill >> for the Playa. Having the cutout in there to block the sun during the >> part of the day when it shines in the window directly would probably >> be a good idea. >> >> Regarding ventilation, I suspect that it would work well to generate >> an updraft by installing a black chimney pipe in the roof. That would >> draw air up when the sun shines on it, pulling it in through your >> vents below. >> >> As an added bonus, you could put a damp cloth over the vent so air has >> to pass through it, which would cool it down and moisturize the air. >> You'd need a course fabric for that, something that's absorbent and >> loosely woven so air could pass through well. You could drape the >> bottom into a bucket of water, and it would wick it up continuously. >> >> I haven't actually tried those ventilation ideas to work out the kinks >> yet, but I intend to do that this year. The principles behind it are >> sound though :) >> >> Jack >> >> On Mon, Jul 4, 2011 at 11:20 AM, Milt Fisher <[email protected]> >> wrote: >> > I was planning to tape the filters to the outside after setting up. That >> > way >> > I could replace the cutouts during dust storms if too much dust came >> > through >> > the filters. >> > Did you just have one filter? Was that enough to provide ventilation? >> > On Jul 4, 2011, at 9:44 AM, Steve Upstill <[email protected]> wrote: >> > >> > Don't know if you're headed for the Playa, but I liked my hyurt nice and >> > dark. I had great results with a furnace filter: cut a hole just small >> > enough to hold the filter firmly. Bonus: you can still fold/stack your >> > panels. >> > Cheers, >> > Steve >> > -- >> > Before you criticize a man, walk a mile in his shoes. That way, when you >> > do >> > criticize him, you'll be a mile away and you'll have his shoes. >> > >> > On Jul 4, 2011, at 9:03 AM, Milt Fisher wrote: >> >> >> >> I'd like some recommendations for hexayurt windows. I'm not interested >> in >> >> framed, sliding windows with screens, just some plastic of some kind >> >> taped >> >> over a hole in the panel. Any recommendations on what kind of plastic >> to >> >> use? Thin plexiglas maybe? Or perhaps flexible vinyl? >> > >> > >> > Any other ideas for simple windows? >> > I'm planning to tape the plastic to the outside and hinge the panel >> cutout >> > into the window opening so we can close it when we want darkness. >> > Thanks, >> > Milt >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "hexayurt" group. >> > To post to this group, send email to [email protected]. >> > To unsubscribe from this group, send email to >> > [email protected]. >> > For more options, visit this group at >> > http://groups.google.com/group/hexayurt?hl=en. >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "hexayurt" group. >> > To post to this group, send email to [email protected]. >> > To unsubscribe from this group, send email to >> > [email protected]. >> > For more options, visit this group at >> > http://groups.google.com/group/hexayurt?hl=en. >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "hexayurt" group. >> > To post to this group, send email to [email protected]. >> > To unsubscribe from this group, send email to >> > [email protected]. >> > For more options, visit this group at >> > http://groups.google.com/group/hexayurt?hl=en. >> > >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/hexayurt?hl=en. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/hexayurt?hl=en. >> >> > -- > You received this message because you are subscribed to the Google Groups > "hexayurt" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/hexayurt?hl=en. > -- You received this message because you are subscribed to the Google Groups "hexayurt" group. 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