Weight of Gas Canisters

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zelph
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Re: Weight of Gas Canisters

Post by zelph » Mon Sep 22, 2008 9:52 pm

DaddyMnM wrote:Zelph,
I am not sure water evaporated cooling works too well in humid environments. I have seen evaporated cooling used instead of freon based air conditioning in arid places like west Texas, but not Illinois. It's too humid.
I think it would work as long as there is air movement and humidity is not over 95 percent. I'm guessing humidity amount :D

I know that greenhouses here in the midwest use evaporative coolers to to keep them cooled down. One entire wall of the green house is a wall of cascading water falling down over evaporating pads. The other end of the green house is a wall filled with exhaust fans blowing air out which sucks air in from the oposite end where the evaporator pads are located. I hope that sounds right. :D
http://www.woodgaz-stove.com/

DaddyMnM
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Location: Seattle

Re: Weight of Gas Canisters

Post by DaddyMnM » Sat Sep 27, 2008 1:12 pm

I bought a new can of fuel for my butane stove (posted previously):

viewtopic.php?f=42&t=1091&st=0&sk=t&sd= ... tane+stove

I bought a can of Ronson Isobutane at Home Depot. It lists the contents as Isobutane CAS #75-28-5 and lists contents as 5.82 oz or 165 grams. It costs $2.99. I weighed the can without the cap and it weighs 7.5 oz or 213 grams. With cap it weighs 7.6 oz or 217 grams.

I understand that standard butane canisters designed for backpacking stoves include some propane since butane does not vaporize well near or below 32F or 0C. I can also see that the canisters are much larger in diameter which makes them more stable and may help fuel vaporize better due to less exterior surface area (not sure on that one). They also have threaded nipples so interfacing to a stove is much more secure and easier to build.

I am wondering, however, if the butane can may be a better base for a lightweight stove (as long as cold weather performance is not an issue). The cans are made of aluminum (used cans can be recycled into alcohol stoves :D ). The gas canisters appear to be a light steel (a bit heavier). Also, the Ronson cans are available in many places where cigarette (and lighters) are sold like drug stores and convenience stores. The canisters need a camping or sporting goods store. I can easily find 70gram and 165gram cans and they both work with my stove.

http://www.buy.com/retail/product.asp?s ... caid=17902
http://www.bellaromacandle.com/index.cf ... /id/281727

I see someone in Japan has tried this:

http://www.youtube.com/watch?v=xfHAKE5L ... re=related

Anyone else considered trying to build this can into a stove design?

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zelph
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Re: Weight of Gas Canisters

Post by zelph » Sat Sep 27, 2008 2:58 pm

It's one design I'm considering. I like your stove's simplicity and want it :D I'll trade a borde bomb :mrgreen:

http://i272.photobucket.com/albums/jj18 ... 290011.jpg

This photo of your stove's top is interesting and I will try to incorporate it's design in to future projects. The control valve for that type of canister is going to be a challenge :)

I like canisters made of aluminum for their dual purposes and recycle value.
http://www.woodgaz-stove.com/

DaddyMnM
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Location: Seattle

Re: Weight of Gas Canisters

Post by DaddyMnM » Sat Sep 27, 2008 8:26 pm

Zelph,
Hmmm, that's tempting. I would suspect a Borde Bomb would be worth more than my no name stove, but I think I am beginning to appreciate it more, the more I use it. Besides, if you are willing to trade a Borde Bomb, it must be more valuable than I thought :D . I think I'll keep it for now. Thanks for the offer. (Ridgerunner must think I am nuts :mrgreen: ).

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zelph
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Re: Weight of Gas Canisters

Post by zelph » Sat Sep 27, 2008 8:30 pm

DaddyMnM wrote:Zelph,
Hmmm, that's tempting. I would suspect a Borde Bomb would be worth more than my no name stove, but I think I am beginning to appreciate it more, the more I use it. Besides, if you are willing to trade a Borde Bomb, it must be more valuable than I thought :D . I think I'll keep it for now. Thanks for the offer. (Ridgerunner must think I am nuts :mrgreen: ).
Offer withdrawn :o

Ridgerunner is really gonna lay it on heavy :lol:
http://www.woodgaz-stove.com/

DaddyMnM
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Location: Seattle

Re: Weight of Gas Canisters

Post by DaddyMnM » Sun Sep 28, 2008 7:44 pm

I've been surfing the web on the topic of butane vs butane/propane mixes and found this interesting link ...

http://www.bushwalking.org.au/FAQ/FAQ_GasStoves.htm

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zelph
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Re: Weight of Gas Canisters

Post by zelph » Sun Sep 28, 2008 10:38 pm

That one is probably the bible of canisters site. So much to read, not enough time, maybe when snow flies. Tony has linked to that site a few times, he and Roger go back and forth,share alot of stuff. Both Bushwalkers
:D
http://www.woodgaz-stove.com/

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