Mechanical energy producing method, involves extracting carbon-di-oxide at supercritical vapor state from underground storage tank and sending vapor through turbine till pressure less than critical pressure of carbon-di-oxide

摘要

The method involves extracting carbon-di-oxide at supercritical vapor state from an underground storage tank. The vapor is sent through a turbine until a pressure less than the critical pressure of the carbon-di-oxide. The mechanical energy is collected on a shaft of the turbine. The expanded carbon-di-oxide vapor is liquefied and the liquid carbon-di-oxide vapor is injected in the storage tank.