Salt Lake City is going to start a small pilot project that will use sewage to heat and cool buildings. The idea uses the simple concept of heat transfer to transfer energy from one source to another.
“The system should sufficiently heat and cool Lear’s 8,000-square-foot building about 95 percent of the time. For the remainder, Lear will pool 1,800 gallons of water in the basement, also using the water to irrigate the building’s lawn.
It’s a bit expensive – the system costs $20,000 more than traditional systems – but if it works well, Lear hopes it could be eventually used by the masses.”