ENVIRONMENTAL THERMAL ENERGY CONVERSION

A method of electricity production using water thermal energy includes the steps of: compressing an enclosed working fluid at a first vertical position relative to a surface of a body of water to cause the fluid to move to a second vertical position relative to the surface and subsequently move to the first position in a closed loop, an external environment at the second position having a greatertemperature than an external environment at the first position such that the fluid transitions between a liquid phase at the first position and a vapor phase at the second position, the compressing using power from a battery, and expanding the fluid at the second position to generate electricity to charge the battery. The first and second positions may be two depths of the body of water or a height of an atmosphere above the body of water and a depth of the body of water. 利用水热能的电力生产方法，包括：在相对于水体的水面的第一竖直位置处将封闭的工作流体压缩，以使流体在闭合回路中移动到相对于水面的第二竖直位置并随后移动到第一竖直位置，第二竖直位置处的外部环境具有比第一竖直位置处的外部环境高的温度，使得流体在第一竖直位置处的液相与第二竖直位置处的气相之间转变，压缩利