03-05-16, 08:51 AM | #11 |
Land owner
Join Date: Nov 2012
Location: NM
Posts: 1,026
Thanks: 12
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Yeah if I build this thing it's going to be fairly large. I have 60 feet of sewer pipe. To be worth anything I know it will have to be at least 20 feet long.
Only 2 things limit the size : The physical length of 60 feet. The availability of 50 cent a pound scrap stainless. I expect efficiency to only be between 20% and 60%. Even if all it does is 10% efficiency and prevent the pipes from freezing abs bursting then it will have been worth it. I don't think that copper would be strong enough. All industrial heat exchanges are made of stainless. |
Tags |
heat exchanger, heat recovery, preheater, waste heat, water heater |
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