Passive solar building exterior

RJ Watts
Toronto Canada

The sun-facing exterior of a building could be clad with a passive solar collection system such as black tubes enclosed in a translucent casing. In winter, a solar-powered fan at the bottom could draw in cool air and circulate the hot air at the top back into the building. In summer, the hot air could potentially drive a turbine to generate power to cool the building.

Green Land Clearing

Vancouver Island, BC, Canada

When people clear land around here for houses and malls, etc. they stack the brush in piles and then burn it. Tons of CO2 go up into the air.

Instead, there should be a machine that can turn this land clearing waste into charcoal, which is a natural fertilizer and excellent carbon sequestration device. Or the debris could be chipped and used for landscaping purposes or compost.

Waste Water Power Plant

Montreal, PQ, Canada

Capture the energy of waste-water from tall and high-rise buildings as it flows down pipes to a reservoir installed just above and connected to a micro hydroelectric turbine before releasing the water in the sewer below.

These turbines are already used in creeks and small rivers… just substitute the creek with a sewer pipe. This is not a complicated idea. The various technological components already exists and are already in use. And there are no environmental impacts.

All that would be required would be to re-configure and assemble them for use in buildings. Some building modifications to accommodate the reservoir and the micro turbine would be required. Every edifice in the world releases a continuous stream of used water. A lot of energy is expended to bring that water up to each tap in each unit in each edifice… why waste the opportunity to recoup the energy from used water flowing down? Each building can easily connect this power source to the grid. Roof top rain water drains could also be connected to the system.

If every tall building in NYC was equipped with a micro turbine the amount of power generated would be significant. Additional small turbines can be installed in the cities sewer system to recycle the energy from the same water that gave power to the building it came from. Enough energy should be created to provide the energy used to pump waste water in to the treatment plants.