Freezing type water heater unit for generating power by using natural energy

The invention discloses a freezing type water heater unit for generating power by using natural energy. A pipeline communicates with a turbine power generation system, a water heating system, a pressurizing device and a heat recovery system in sequence in the flow direction of carbon dioxide. The carbon dioxide pushing turbine blades in the turbine power generation system to rotate and generate power flows into the water heating system, is cooled and liquefied, is pressurized through the pressurizing device, enters the heat recovery system, absorbs external heat, becomes supercritical carbon dioxide, and is finally circularly sprayed into the turbine power generation system to generate power for the unit to use. An AI control system is further arranged, and by means of the control system,the power generation amount of the turbine power generation equipment, the heated water amount of the water heating system and the recycled external heat amount of the heat recovery system can be intelligently controlled acco