This invention uses a low boiling point working agent and water (including sea water, salt water and selected solutions) to contact directly for the heat-exchange in the thermoelectric generation. This method can be applied in sea, salt lake and remined-heat-sites for thermoelectric generations. The key technique is choice of the working agent with low boiling point, insoluble and different density with water. By means of liquid pressure the sea water flows itself into evaperation containor or condenser to perform the heat exchange. The minute quantity of working agent may be recollected by increasing the remained agent-collectors. This method needs not the heat exchanger, thus it rises the efficiency of heat conductivity and the power of the generator. Moreover, it saves cost and decreases the dimensions as well. |