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DanfromNY 02:04:55 Wed Nov 23 2011 |
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Greg_in_BC 02:40:22 Wed Nov 23 2011 |
sure appreciate you sharing all your experience from the field. Wishing I could join you fellows up there :smile: Greg |
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JOE_S_INDY 18:51:17 Wed Nov 23 2011 |
Joe |
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dickb 19:25:24 Wed Nov 23 2011 |
Thanks in advance. Dickb |
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JOE_S_INDY 19:57:48 Wed Nov 23 2011 |
Well, propane freezes at about minus 40 or 45 degrees (farenheit or Celsius) http://en.wikipedia.org/wiki/Propane At those temperatures it isn't something that I will ever have to worry about any more. I did see propane freeze at minus 81 degrees F. in the mid '60's - but I have managed to stay away from those temperatures since then. Dredging in any sub zero air temperatures just seems wrong to me. Well, maybe just not something that I'll ever do. Oh, the not bringing propane containers inside has to do with leaks. A propane leak outside is dispersed by air movement while a propane leak indoors will puddle the gas / air mixture in a low depression or area. Explosions tend to follow that. I make it a habit to never, ever have a gas leak and so never would have to worry about that. Joe |
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dickb 22:15:32 Wed Nov 23 2011 |
I use propane here in IA for temp heat and use 100# cylinders to feed the heater. If I tie 1 cylinder on to the heater, the withdrawal rate will freeze the tank at about 20* outdoor temp. I usually put 2 cylinders together and draw from both at once. That will usually keep the cylinders from freezing. The instant water heaters draw a lot of propane to run, but I'm not sure it they will freeze the propane tanks. Kev used oil last winter to work under the ice but during the summer months the propane wouldn't be any problem. I happen to think that the instant demand hot water heaters would be a good choice. They already have pressure and temp safety valves installed. Dickb |
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JOE_S_INDY 02:28:50 Thu Nov 24 2011 |
Whatever the system, filtered water to stop 'junk' from clogging important parts is a good idea. Lets see, + 20 degrees air / tank temp and a heavy usage / vaporization rate inside the tank can certainly bring the liquid propane to minus 45. Then again, same situation with a mild load should be just fine. I guess if necessary, put the propane tanks in the water and warm them that way from the +32 water. Joe |
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oldstyle 23:23:11 Sat Nov 26 2011 |
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MrIdaho 20:22:40 Thu Dec 22 2011 |
Are you guys running hot water down into a wetsuit and letting it escape through the arms and legs, or wearing a dry suit and have heating hoses inside the suit? Anyone diving at -30 is definitely braver than I am. Good luck to you all. |
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micropedes1 23:58:34 Fri Dec 23 2011 |
I use an exhaust-heated hot water system. I have used it with a wetsuit for several decades. And have been successful by taking screening precautions and using a tempering tank. But Alaska conditions dictate some refinements that were not necessary in the lower 48. Up north, I tend to favor a drysuit, gloves with a ring system, and insulated Muck boots. Not better than the wetsuit, just more flexible and comfortable in the cold water. In the last season or so, I have modified my setup to include a "coolshirt" under my drysuit. The manufacturer assured me that using their product to keep warm in frigid waters was not what it was designed for, but it would not leak warm water into my drysuit. (made to cool off athletes). Kinda pricy,for a shirt. But it works flawlessly when tied to my existing hot water system. And allows me to stay in very cold water far longer than I would without the added warmth. Not trying to sell their product. Its just another alternative to consider. Oh, the "coolshirt" is worn over thermals and not next to the skin making the possibility of a hot water burn extremely unlikely. http://www.coolshirt.net/acc-cool-shirt-options.html |
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DanfromNY 19:14:13 Sun Jan 8 2012 |
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DanfromNY 16:10:41 Fri Jan 27 2012 |
http://www.youtube.com/watch?v=t2yRlEowTOY&list=UUFn3aIJ3MOIXn3pfwUVfGwQ&index=30&feature=plcp |