Curious to if there are any updates to this idea. I really like how simple your system is.
How many watts / hour does the humidifier use on low speed, 120 * .7 = 84 watts? About how much volume was your tent? In regards to using a battery and how long it will run the humidifier. I believe there is an inefficiency loss due to the DC to AC conversion that maybe sizable. On Tuesday, August 21, 2012 1:00:54 PM UTC-4, Phil Dirt wrote: > > What I used was a Vornado 40 Humidifier, 120 VAC, 0.7A, 60 Hz. About $65 > from Amazon I think, and I'm sure cheaper models could be found at discount > stores or online, but the key features you need to look for are a wicking > action (as opposed to pump) and without heater because there's no point > wasting power to heat the air in a swamp cooler, which would be decidedly > counter-productive. It runs off 120 V, which I convert from 12V with a > simple auto supply store (or Northern Tool) inverter. > > By my rough calculations, this could run about 100 hrs off a 12V, 750A > battery. (I'd appreciate it if anyone out there can check this estimate.) > This year I'll be playing with a solar charger to at least partially > recharge the battery during the day. Actually, the only time I really felt > a need to run this was late mornings for an hour or so. > > The principle is the same as a swamp cooler you could build with a bucket. > Water is drawn up from the sump by capillary action, the fan creates a weak > vacuum within the unit, dry air is drawn in from outside and picks up > humidity when it passes through the wicks, cools and the cooler air is > forced out the furnace duct elbow. > > On Monday, August 20, 2012 1:44:38 PM UTC-7, Phil Dirt wrote: >> >> The elbow is simply there to direct the cool air from vertical to >> horizontal. Probably increases the speed a bit because it is going from a >> larger rectangular inlet to a 6" circular outlet. Air intake is through the >> sides of the humidifier, where it then passes through the fabric wicks and >> is blown out by the fan. No need to incorporate a fan because there is >> already a fan in the humidifier. >> >> In my yurt I just placed the humidifier in front of a filtered >> ventilation port and pointed the elbow at the other end of the yurt. The >> cooler air displaces the warmer air, which rises and escapes from the other >> filtered ventilation port in the roof at the far end of the yurt. >> >> Some things don't have to be complicated to work. >> >> Bill >> >> On Saturday, August 18, 2012 10:50:09 PM UTC-7, kenwinston caine wrote: >>> >>> Wonder if this will work well? >>> >>> Not clear on the what the elbow is about. Is that for air intake or the >>> mist exhaust? >>> >>> Would you incorporate a fan to quickly move dry air through the moist >>> exhaust and help circulate the cooler air that results from evaporation? >>> >>> My swamp cooling experience tells me that the blower has a lot to do >>> with the effectiveness. So I'm really curious to hear how well this works. >>> You're BLOWING moist air into the dry air in the room, by drawing fresh dry >>> air tfrom the outside hrough the moist filters of the cooling unit. And the >>> blower creates moving air in the room and helps you create constant air >>> exchange so that old air is moving out of the room and so that some fresh >>> dry air is being sucked in all the time -- to keep the evaporative effect >>> happening and to keep the room from becoming damp, hot and swampy. >>> >>> I just wonder if that can happen without a pretty powerful blower. >>> >>> Points for ingenuity and willingness to experiment. Please share the >>> outcome. >>> >>> On Sat, Aug 18, 2012 at 1:56 PM, Bill Senger <sen...@goldrush.com>wrote: >>> >>>> I'm lazy and didn't have the time to build a bucket swamp cooler as >>>> described in Instructables and on the Burning Man site, so I just went out >>>> and bought a humidifier (the cheaper model that doesn't heat the air and >>>> simply absorbs water from the sump with honeycombed sponges, ~$30) at >>>> Wal-Mart , then went to Lowes to pick up an 8" diameter furnace elbow and >>>> a >>>> roll of self-stick foam insulation. Drill a few holes in the top of the >>>> humidifyer, attach elbow with zip ties, seal with foam insulation strips, >>>> and you're done. >>>> >>>> Pros: Quick and easy. >>>> >>>> Cons: You'll need 110V to run the fan, so I just hooked up an >>>> inexpensive power inverter to a battery and plugged the humidifier into >>>> the >>>> inverter. >>>> >>>> >>>> >>>> Bill >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "hexayurt" group. >>>> To post to this group, send email to hexa...@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> hexayurt+u...@googlegroups.com. >>>> 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 unsubscribe from this group and stop receiving emails from it, send an email to hexayurt+unsubscr...@googlegroups.com. To post to this group, send email to hexayurt@googlegroups.com. Visit this group at http://groups.google.com/group/hexayurt?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
