Travis Johnson wrote:The ideal place for this would be in an old quarry.
Austin Shackles wrote:but 5000kg and 5m height would give you 25x the energy, say, and wouldn't be hard to build. Obviously, you can't carry it around like a drill, but many things don't need so much power as a drill. Take lighting, for example, if you use LEDs 10W will light a room.
Austin Shackles wrote:It might be that for small scale, batteries are still the way to go - but town-sized, they are still way too expensive.
Austin Shackles wrote:Gravitational potential energy though is given by mgh: so a 1 tonne weight (1000kg) lifted by only 1m has a potential energy of somewhere around 9.8KJ
Daniel Burnam wrote:His boat has a 425hp diesel caterpillar motor and he says he burns about 35 gallons of fuel/day on average. Just a quick search on the internet and some simple math says that he's using about 1 megawatt electrical equivalent in diesel fuel
josh ober wrote:I guess what I’m having trouble with is understanding how cob would stay cool in the heat, considering the fact that it seems it would be absorbing heat from the sun.
Jay Angler wrote:...if the goldenrod was grown in dirt with fertilizer, it might well show some of the changes for reasons other than the presence of higher levels of CO2.
Jay Angler wrote:Who was that guy anyway?