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District heating has long been popular in Nordic countries. In Denmark, some two-thirds of households are connected to a district heating network. Early systems distributed heat through steam with heat supplied by combined heat and power plants. The use of solar, geothermal and pumped heat, have pro...

I have some results to share on the concept of low temperature cooking using long term stored heat.  My idea was to combine interseasonal heat storage with low temperature cooking and build a cooker that was large enough and stored enough solar heat long enough, to cook for a whole town over winter....