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yes but no reflective surfaces involved this time, at least not for insulation. compare that to vacuum tube water heater, it has a heat pipe with a fin, painted black, which is in turn insulated with a two walled evacuated glass tube. it’s there just to stop convection from carrying heat away. i guess something very similar is going on there
yes but no reflective surfaces involved this time, at least not for insulation. compare that to vacuum tube water heater, it has a heat pipe with a fin, painted black, which is in turn insulated with a two walled evacuated glass tube. it’s there just to stop convection from carrying heat away. i guess something very similar is going on there