Power generator utilising natural energy - has vessel containing fluid descending by gravity and fluid rising by geothermal convection

摘要

A deep shaft (10) is bored into the soil. A hollow container (12) with a rod (14) can move up and down the shaft. It is filled at the top with a liquid of high specific weight and low specific heat capacity. The weight causes the container to fall down. It pulls the rod (14) with it and this drives a generator. At the bottom of the shaft the high temperature in the soil evaporates the liquid and the vapour rises through a bore (15) in the rod (14). The container is then pulled up mechanically with the consumption of less energy than was generated by its fall.