In coresponding with Pete who's going to paddle the everglades it occurred to me that it would be really easy to make a still. You get some tubing and drill a very closely fit hole in a pot lid with a numbered drill (so you can keep it tight). Deform the tubing 1.25in up (to hold it off the water) and cap the tube with a protective sheath when not in use. Carry a very small rattail file to fix it, in case you deform the end. The total addition to your gear would be a ity bity file and ?1/4lb of coiled copper tubing. Questions: What size of tubing? What length of tubing to cool steam in 70deg F still air? Do you have any corrections or improvements to my assembly ideas? These aren't simple questions. I greatly appreciate the support this group offers. Thanks. Mike *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced outside PaddleWise without author's permission Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Mike McNally wrote: > > In coresponding with Pete who's going to paddle the everglades it occurred > to me that it would be really easy to make a still. <snip> > Questions: > > What size of tubing? > What length of tubing to cool steam in 70deg F still air? > Do you have any corrections or improvements to my assembly ideas? > > These aren't simple questions. Here's another: given that the typical camp stove takes 4-5 minutes to boil a quart of water, how long will it take to evaporate a quart of water? Can you do it on less than a quart of fuel? Steve *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced outside PaddleWise without author's permission Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Mike McNally wrote: >In coresponding with Pete who's going to paddle the everglades it occurred >to me that it would be really easy to make a still. Remember Mike, in the Good ol' US of A, it's illegal to distill alcohol! ;) >You get some tubing and >drill a very closely fit hole in a pot lid with a numbered drill (so you can >keep it tight). Deform the tubing 1.25in up (to hold it off the water) and >cap the tube with a protective sheath when not in use. Carry a very small >rattail file to fix it, in case you deform the end. The total addition to >your gear would be a ity bity file and ?1/4lb of coiled copper tubing. I'm no thermodynamics expert, but here are some thoughts: >Questions: > What size of tubing? Depends on how fast you're heating it (how many BTU's input--how much steam at one time will need to be condensed) > What length of tubing to cool steam in 70deg F still air? I'd think 10-12' would work well. > Do you have any corrections or improvements to my assembly ideas? You could probably deform the tubing as little as 1/4" or 1/2" up, as it just needs to be deep enough to pick up the steam. Running the condenser through a water bath will let you use less tubing--water has a much higher thermal mass than air. Do a Yahoo search on counterflow wort chillers for homebrewing. These are generally 8-10' of 3/8" tubing inside an outer hose of 1" tubing filled with running cold water. They're used to chill 200+ *F water down to 60-80*F in as little time as it takes for the wort (unfermented beer) to flow through it. You could probably improvise with a funnel on top that you could put in 70*F salt water in to cool the steam. Shawn -- Shawn W. Baker 0 46°53'N © 1999 ____©/______ 114°06'W ~^~^~^~^~^~^~^~^~^\ ,/ /~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^ baker_at_montana.com 0 http://www.missoulaconcrete.com/shawn/ *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced outside PaddleWise without author's permission Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
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