At a guess, that would be because 1) it's easier to evaporate water at altitude, and 2) unless the cabin is pressurized you can pretty much count on air moving in and out. Whereas, the goal in a yurt is to minimize air circulation (at least if you want your fresh, cool air to stay in the yurtl)
Also, what Krusty said: it's all about evaporating water, but there are limits to how much water the air can hold. BTW, this is why they call them swamp coolers. When used in the Deep South as a cheaper substitute for air conditioning, once the air becomes saturated with water (if it wasn't to begin with) the cooler starts gasping to be effective and the warm (if not hot), moist air makes you feel like you're in a swamp. Think hot, dry desert air is a challenge? Try hot air so moist your sweat can't evaporate. On Aug 16, 2013, at 9:51 AM, Fabien Pichard <[email protected]> wrote: > I that's true, then explain me why the general aviation uses swamp coolers > inside small planes? > > Sent from my iPad > > On 12 août 2013, at 11:38, Josh and Cody <[email protected]> wrote: > >> the way a swamp cooler works is by evaporating water removing the latent >> heat of vaporization... just like the cooling from sweat. >> >> Swamp coolers work best with lots of evaporation. so bringing in that hot >> dry air, passing it thru the mesh with water causes the air to drop it's >> temperature by evaporating water. sometimes as much as 15-20 degrees >> cooler. the dryer the air, the better the effect. >> >> The air picks up moisture as well, so you will need and exhaust somewhere, >> or you could build a very moist space in a sealed hexayurt. >> >> many people use a HEPA furnace filer as the "out" for the air. >> >> We've used these even on tent structures and they cool the air >> significantly, but only if the moisture moves out! If the moisture collects >> over time in the Hexayurt, it is ... not as pleasant! More humid and damp. >> >> So recirculating air from the hex and back into the swamp cooler does not >> really work. >> >> This is very different that an Air Conditioner, which strips moisture OUT of >> the air, and cools it. Dry cool air feels "colder" and allows for natural >> sweat cooling in a normally humid place. This is why you need humidifiers >> in a house in Nevada when you run your air conditioner, it strips the water >> out of already very dry air. >> >> >> >> >> On Mon, Aug 12, 2013 at 9:05 AM, Vladimir Khodel <[email protected]> wrote: >> You can set it up in the yurt if you can duct the outside air to come into >> the swamp cooler, such as with a rectangular trash can design setting it >> with the intake at the hole in the wall. >> >> You can not get efficient cooling if you use yurt air as the source, since >> it is already 4-6 times more humid than the outside air. I guess this rules >> out the bucket design :) >> >> Cheers, >> >> Vladimir >> >> >> On Sun, Aug 11, 2013 at 6:21 PM, Robert Rubino <[email protected]> >> wrote: >> So im looking at a solar panel powered attic fan and i have my solar pond >> pump, and am building it on my bucket.... my question is, does the swamp >> cooler have to be outside the yurt and plumed in. or can i set it up in the >> yurt ( i sleep with a fan all the time anyway so the sound doesn't bother >> me.) or will that not cool corectly? >> >> i have found plenty of info on how to build it, but not much on deploying >> it. im probably over thinking it. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/hexayurt. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/hexayurt. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/hexayurt. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> > > > -- > You received this message because you are subscribed to the Google Groups > "hexayurt" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/hexayurt. > For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "hexayurt" group. 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