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Balloon power isn't just a load of hot air

Balloon power isn't just a load of hot air

作者:漆镦垒  时间:2019-03-02 07:03:02  人气:

For those who dislike the sight of wind turbines on the horizon, would a spectacular hot-air balloon farm be more acceptable? Ian Edmonds, an environmental consultant with Solartran in Brisbane, Australia, has designed a giant engine with a balloon as its “piston”. A greenhouse traps solar energy, providing hot air to fill the balloon. As the balloon rises, it pulls a tether, which turns a generator on the ground. Once the balloon has reached 3 kilometres, air is released through its vent and it loses buoyancy. This means less energy is needed to pull the balloon back down again,