Drive device driven by buoyancy and thermal energy

A drive device which is driven by buoyancy and thermal energy, the drive device comprising:

• a vertical high-temperature tank which stores high-temperature liquid;
• a vertical low-temperature tank which stores low-temperature liquid while being provided adjacent to the vertical high-temperature tank;
• an insulation wall which is provided between the vertical high-temperature tank and the vertical low-temperature tank;
• a travel belt which is formed in an annular shape in the insulation wall and is movable with respect to the insulation wall;
• a plurality of horizontal communication pipes which causes the vertical high-temperature tank and the vertical low-temperature tank to communicate with each other across the travel belt;
• a pair of volume variable containers which is provided in each of the plurality of horizontal communication pipes and is supported by each of both ends of the horizontal communication pipe while an inside thereof communicates with an inside of the horizontal communication pipe;
• and
• an enclosed gas which is enclosed in the horizontal communication pipes and the pair of volume variable containers,
• wherein the pair of volume variable containers includes a transfer element that is configured to transfer the enclosed gas between the volume variable container of the vertical high-temperature tank and the volume variable container of the vertical low-temperature tank so that the enclosed gas stays in the volume variable container of the vertical low-temperature tank during a downward movement and the enclosed gas stays in the volume variable container of the vertical high-temperature tank during an upward movement, and
• wherein the travel belt is made to travel with respect to the insulation wall due to total buoyancy difference between total buoyancy of buoyancy of the volume variable containers of the vertical high-temperature tank and total buoyancy of buoyancy of the volume variable containers of the vertical low-temperature tank among a plurality of the pair of volume variable containers supported by the travel belt through the horizontal communication pipes.