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Post by sidfishus on Apr 10, 2019 17:31:52 GMT -8
I moved to a property that has chunks of scrap metal lying all over the place. I wonder if I could add that to my brick and cob mass to hold heat? It would kill 2 birds with one stone: clean up the mess and contribute mass. Any reason I shouldn't do it?
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Post by Vortex on Apr 11, 2019 0:54:32 GMT -8
Yes, steel makes great mass, just remember that it'll have a higher expansion rate, so if you put it inside of cob or masonry it might cause cracking unless you give it a little expansion gap.
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Post by sidfishus on Apr 11, 2019 2:55:01 GMT -8
Thanks! I didn't think of that so I'm glad I asked.
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Post by Dan (Upstate NY, USA) on Apr 11, 2019 3:27:55 GMT -8
I threw a 1/2 ton of scrap metal in my concrete heat couch.
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Post by coastalrocketeer on Apr 18, 2019 19:12:53 GMT -8
Also, if they are going inside a “heat bell” chamber, the closer to the top inside the chamber (but with some space for hot gases to pass over too) the more hot they will get and thus more heat they will store...
Use lighter weight pieces down low, to support heavier/denser stuff up higher and that should give you more bang for your scrap metal “buck”
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