To correct the environment of the earth and to enable life to coexist by agitating liquid out of fluid and compressing gas for causing friction heat and then picking hot water.

A container 1 that has been kept warm divides fluid into liquid and gas. A heating medium 2 is water or non-explosive oil and a turning shaft and wing 4 moves a double pot 3. A drive source A is obtained from the natural world, turns rain, snow, flow (water mill wheel) of river, wind (windmill) and the like, and then uses the energy individually or in a compound manner. A rotary shaft 5 connects the drive source A, a turning shaft, and the wing 3. A resistance electrical heating element 6 suppresses the turning, agitation, crash, and passing through to increase temperature. Supply water 8 passes through a pipe 7 and the double pot 3 to become hot water 9 and then reaches a usage site 11 through piping 10, where various kinds of energy are created by an air-conditioning device, a pump, a generator, an electric motor, a methane gas generator, a microbe generator, and the like for providing nursing operation, a pool, and the like including agriculture/fisheries, industry, and medical treatment.