/sci/ - Science & Math

Anonymous Sun Dec 2 04:58:33 2012 No.5311214 [View]
File: 13 KB, 288x306, Protip.jpg [View same] [iqdb] [saucenao] [google]

one question:

why don't use abdandoned mines?
the old house i bought uses a gravity heating system which means the heat source is at the lowest point in the building, water egts heated, rises, goes through the radiators, gets colder, sinks back to the heat source(loop).
so why not use old mines as heat source and put a bunch of stirling engines on top of it connected to some generators?

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/sci/ - Science & Math

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