The Genius of Jean Pain
(Page 5 of 5)
March/April 1980
By Jean Pain
After filling the interior of the cylinder with composting material, Larry wrapped 1" semirigid hot water pipe around the column ... starting at ground level and spacing 10 coils seven inches apart. Then the entire assembly was packed with two and a half feet of the four-parts-cellulose, one-part-manure mixture—on top and around the sides of the column—and wrapped in black plastic to capture solar heat.
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While our test mound really hasn't had time to demonstrate its full potential, the interior temperature has already worked its way up to 116°F. Water retained inside the pile reaches 112°F, while a two-gallon-per-minute flow yields 85°F liquid . . . and we're using ground water that enters the heap at a chilly 48°F.
Once the oversized wood chips that we were forced to use get into fullswing decomposition, we're confident that the temperature of the water heater will rise significantly . . . perhaps to the 140°F Jean gets from his heaps.
But in the meantime, our tiny five-ton pile is showing tremendous potential, and we've got some more ideas to get to work on. A shredder that will produce slivers to M. Pain's specifications is in the planning stages . . . and our research team wants to try incorporating an actual hot water tank in the middle of a heap. We'll keep you posted on progress with this revolutionary waste heat management technique ... because, as Jean says, "Now is our last c hance."
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