socalledunitedstates:Large Area Solar Heating SystemHeating with a sun collector costs nothing and c
socalledunitedstates:Large Area Solar Heating SystemHeating with a sun collector costs nothing and contaminatesnothing. In this article I propose a solar heatingsystem consisting of a large solar collector, suitablefor the heating of a house; and a heat store, capableto bridge a week of cloudy weather. Both are made fromsimple materials.Read more… -- source link
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