The Otherpower discussion board - Index.
Contents. Solar Air Conditioning. This goes back to something the Romans actually did.
It is called a solar chimney. It turns out that the soil about 5 feet underground remains a constant temperature year round. For instance, on the southern tip of Vancouver Island it is about 52 F year round. We don't really need air conditioning though. But a lot of furnaces bring in fresh air, so why not preheat that air from 30 F up to 52 F? What are all the different ways to store energy besides using rechargeable batteries?" Human beings have been looking for a good way to store energy for a long time.
One of the major things that has been holding up electric cars is battery technology -- when you compare batteries to gasoline, the differences are huge. For example, a typical electric car might carry 1,000 pounds (454 kg) of lead-acid batteries. Deep Cycle Battery FAQ. Cool Home Brewed Equipment. How to Design Your Own Homemade DC to AC Inverter.
Solar Tower. Hydro Power. Heat Engine. Heating. Fuel Cell.