Heating our dwellings in winter is not only a source of pollution, but also costs
money. Whether you use gas, firewood or electricity, you contribute to planetary
pollution and pay for it too - one way or another.
Photo on the right demonstrates how we use solar heating during cold winter days.
A stainless steel mirror installed flat on the deck effectively doubles the amount
of solar energy entering the window, whatever the weather.
The transport of heat to the house occurs with the speed of light. There are no
losses or delays associated with heat storage and transfer.
The well-insulated house interior itself works as a solar collector. Since the
winter Sun here can deliver up to 350 W/m², our 9m² mirror
can reflect up to 3 kW of heat.
The cost of fully installed solar reflector heating seems to be around $150 per
kW with no future bills to pay and no pollution to generate. I wonder if anyone
can find a better deal...
The unexpected bonus of reflective solar heating turned out to be a beautiful
solar art display on the ceiling. Since stainless steel mirrors are not exactly
flat, reflected sunshine produces fascinating and changing light patterns.