| Author | Message | ||
     Hughlysses |
Motorcycle heat and A/C! http://www.engadget.com/2010/01/22/entrosys-motorc ycle-air-conditioning-and-heating-system-now-taki/ | ||
| Ferrisbuellersdayoff |
this was discussed in depth a year or two ago. Some one invented a prototype and gave it away on here. It was called H.T.F.U. | ||
| Hootowl |
I wonder how the cooling part works? I designed (though never built) a cooler based on a tube jacket similar to the ones NASA uses inside the space suits, and that are now available to keep MS patients and construction workers cool, except mine was cooled with semiconductor heat pumps, not ice. I still have the parts. And I don't know about anybody else, but I would have paid in blood to get one of these things back when I was commuting 60 miles each way in Houston in the summer time. If you have not done that, don't tell me to HTFU. | ||
| Ferrisbuellersdayoff |
Mid Florida in the Ocala Forest... We had forest fires spring up everywhere. Still wore my gear. Just hydrate, pee/sweat it out, hydrate some more. I'm waiting for the margahrita mixer mounted on the saddlebag before i get off the road. | ||
| Hootowl |
I always wear gear too, which is why a cooler would have been welcome. | ||
| Midknyte |
heheheh, the Japanese have already done it, and of course smaller http://www.dailymail.co.uk/news/article-475960/Jap an-shirt-maker-launches-air-conditioned-clothes-be at-summer-heat.html | ||
| Steve_mackay |
I was going to suggest that Froggy get this to complete his gadget fetish. But, it looks like he beat me to it by reposting.... http://www.badweatherbikers.com/buell/messages/406 2/532065.html?1264200555 | ||
| Americanmadexb |
What the hell? Is Hughlysses and Froggy on the same Google alerts? Lol.. Those post where only like 10 minutes apart!! | ||
| Nik |
I'll believe it when I can buy it. These guys have been saying "soon" for a few years now. This recent news is just them saying "really really soon." | ||
| Fast1075 |
When I was dragracing sitting in the staging lanes in gear got very brutal here in the middle of the summer....I rigged a 50 qt igloo cooler with a bilge blower, 8 feet of 2" flex hose with a pvc pipe on the end...filled the cooler with ice...stuck the pvc pipe down the neck of my leathers...made a huge difference... | ||
| Hughlysses |
+1 on the HTFU only going so far. I've commuted 20 miles in the afternoon in SC in bumper-to-bumper traffic for a good 10 miles of that in 95 deg. F+ temps wearing full gear. My ass has been cooked on several occasions. The cool thing (no pun intended) about something like this is that on the morning commute, you could arrive at work without needing a shower and change of clothes. | ||
| Hughlysses |
Hootowl- my guess would be the thing uses semiconductor heater/coolers. I don't see room for much else in that box. IIRC they'll get down to ~50 deg. F or so, which isn't bad at all. | ||
| Cityxslicker |
water soaked vest, breathe through mesh armoured jacket, 105 degrees on the desert blacktop, 70 mph STFU | ||
| Hootowl |
Brian, Those evaporation vests work great in dry climates, but not so much in high humidity. They do still work, just not as well. I was looking for a solution that didn't require me to get wet in the process. Hugh, My design used semiconductor coolers as well. I forget what they're called. | ||
| Theironmaiden22 |
Heat Sinks. | ||
| Hootowl |
Not heat sinks, they're a series of semiconductors stuck between two ceramic plates. When current is applied, one side gets hot, the other side gets cold. Conversely, if you heat or cool one side, a current is produced. A heat sink is just a way to spread heat over a larger area, thereby facilitating the dispersion of said heat. These things actually get colder than ambient, a heat sink never will. | ||
| Theironmaiden22 |
Ooooh duh, now I know what you're talking about, the name of them slips me though. Give me an hour or so, it'll come back. | ||
| Hootowl |
There we go... http://en.wikipedia.org/wiki/Thermoelectric_effect | ||
| Theironmaiden22 |
Peltier Cooler? Thermoelectrics? | ||
| Gohot |
I funny thing......a fiew years ago, I was sand blasting a school.The job lasted all summer, and in Utah it could get hot July and August, especially if you were in a suit, a space-suit for the sandblasting to keep out contaminants and dust. It was mid thigh in length, but the strange thing about it was that it was fed fresh air through a filter then on my hip I wore this aluminum cylinder shaped thing that actually cooled the air. All in all it was about the size of a large toothpaste container, and as long as it was hooked to the filtered air supply, it blew cold air into the suit. I never really took it apart to see what it was made of other than the obvious anodized aluminum, but it worked well and all it took was a compressed air source. | ||
| Hootowl |
LOL, a total loss refrigeration unit. | ||
| Fast1075 |
The mysterious tube that uses air under pressure and supplies cold air is called a "vortex tube"...it has no moving parts. In use you supply air under pressure into it...air comes out of two ports...one supplies air about 45 degrees....the waste air port discharges hot air... | ||
| Theironmaiden22 |
I wouldn't say a total loss. You never know man, your 'total loss refrigeration unit' could've paved the way for future development in 'cool suits'. The 'Still Suits' from the book 'Dune' would be really cool. Not only does it keep you cool, but captures the moisture your body loses and stores it in pockets should you get thirsty riding sandworms (called bodywater). Feces and urine are filtered for their moisture through moisture concentrators in the thighs. Weird book 'Dune' was. They even had things called Deathstills that they put their dead in to reclaim it's moisture. But living on a planet where there is no rain and the spice made by sandworms is key to insterstellar travel, what can you do? | ||
| Fast1075 |
Ever see a train-car go by emitting a plume of fog from the undercarraige??? That is a total loss refrigeration unit...a large tank of liquid nitrogen is connected to a long loop of tubing inside the insulated box car...a metering valve slowly feeds the liquid nitrogen through the system. (Message edited by fast1075 on January 26, 2010) | ||
| Edgydrifter |
I, too, was thinking about how one might use Peltiers in a powered cooling vest. The problem are the "hot" sides--they get really freaking hot. You would basically need heat sinks for them, and you couldn't wear anything over the cooling vest to maximize airflow over the sinks. You'd end up looking like some kind of cyborg armadillo. Great if you already wear Icon TiMax gloves, probably a little weird for everyone else. | ||
| Hootowl |
My design (remember, I never actually built it) had everything mounted on a backpack. There were multiple peltier devices each with its own heat sink and fan (for when you are stopped in traffic) The devices were to be mounted on aluminum hard drive coolers. Nice flat surface, already plumbed for cooling lines, and relatively inexpensive. The thing that kept me from going forward (I have all the parts) is the current requirements of the peltier devices. In order to be effective (I did some basic experiments) I would have had to use 4 of the devices, and each one drew 6 amps. 24 amps plus the fans and the pump. I don't think my charging system could have kept up with it. Of course, I wasn’t' going for "this is slightly better than nothing", I was going for " Damn, I'm cold" but still, unless you're on a gold wing, motorcycle charging systems generally aren't up to the task. | ||
| Froggy |
My computer used to run with a peltier for the cooler. It was great at first, but then I upped the juice on it, and the cool side got so cold that condensation was forming and eventually it shorted out my motherboard. | ||
| Edgydrifter |
Hootowl: Here's a link to a TEC backpack similar to what you're describing. http://hackaday.com/2008/09/27/peltier-based-cooli ngheating-backbapr/ The current can be reversed to provide heating, too. Very heavy system, mostly due to the two motorcycle batteries carried as a power supply. | ||
| Hootowl |
Froggy, you needed a seal between the edge of the peltier and edge of the chip. most folks use RTV. That keeps condensation from forming. Or so I've read on overclocker forums. | ||
| Froggy |
Yea, I didn't know that stuff even existed till I joined Badweb. Now I use RTV for everything, including they Mayo jar that refuses to close. Edgydrifter, you can use Speedcell batteries to reduce the weight significantly. |
