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Re: Homemade Thermosyphon Solar Water Heater < $300 (Score: 0)
by Anonymous on Saturday, January 02 @ 09:21:46 GMT | | Ive never seen glass tubes used for a collector. I used a junk air con and salvaged the coils and put that in box I made with the tank on top for thermosiphoing. Havent tried it yet but your way seems like overkill to me. If your looking to vaccum the space in between the pipe and tube, you could braze up some tubes and fittings and use a vaccum pump (expensive unless bought used on ebay) with a manifold gauge to see if your vaccum holds. I work with A/C all day so this comes natural to me. I mean you got heat going through a pane, then another glass tube then the PVC? Seems like copper would absord just as much heat but maybe Im missing something with the vaccum inside the glass..(if you can find a way to hold and keep that vaccum) and then heating the pvc. Ive found pvc to be a poor conducter of heat. I think if I was going to do it Id put copper in the glass, but thats some serious work to get all that to fit together. |
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