Passive Temperature Control Of Buildings
From the moment that we switch our radiators on half of the heat given off by them is lost as it goes into the wall behind them. We can, however, get around this problem with an invention from a then schoolboy prodigy that got onto the 'Tomorrow's World' program in the UK in the 1970s. He had learned from School that heat is given off by way of conduction, convection, and radiation, so when his Grandmother had problems meeting her heating bills the schoolboy reasoned that heat loss due to conduction and convection could be stopped by putting a lining of cardboard covered with silver cooking foil behind his Grandmother's radiators. Heat loss through the wall is now slashed, and rooms heat up faster when the heating comes on. The Fire Brigade said at the time that the cardboard was not a fire hazard as behind the radiator is the least damaged part of a room in the event of a fire. And this saving cuts the CO2 emissions of your house. The UK Government now recommends two more expensive alternatives which are neater, and I use Radflek; to be as neat with cardboard you would have to take the radiator down from the wall. If you only boil as much water in your kettle as you need instead of filling the kettle then you save enough money every day to heat a room, with these inventions you can thus heat two rooms for free.
Another invention from the '70s was Starlite, which if coated on the walls and ceilings of the office and home, could cut heating and cooling bills to near-zero, automatic windows could control most of the temperature adjustment needs.
An alternative to Starlite is Fireputty, invented by Canadian Troy Hurtubise, who was looking for financial backing for lab time so that he could make a household paint out of it, before his untimely death. A passive cooling system like Starlite and Firepaste, if made into a paint, would cut both heating and cooling to near-zero, both in turns of fuel needed, and CO2 emissions.
If you look at this YouTube video https://www.youtube.com/watch?v=aqR4_UoBIzY
you will find the the likely components are 90% corn starch and 10% baking soda mixed into a putty using PVA glue. There may have been other components as well, because it has been made into a spray paint, and paint. You will need to crack the formula in order to make use of passive temperature control of buildings.