Temperature difference power generation and cold and heat combined supply system and operation method thereof

The invention relates to the technical field of energy supply systems, and aims to provide a thermoelectric power generation and cold and heat combined supply system and an operation method thereof. According to the thermoelectric power generation and cold and heat combined supply system, thermoelectric power generation can be achieved through cold air flow and hot air flow, and residual cold energy and heat energy of the cold air flow and the hot air flow can be utilized. The thermoelectric power generation and cold and heat combined supply system comprises a gas supply module, a thermoelectric power generation module, a cold supply module and a heat supply module. The air supply module is provided with a cold airflow outlet and a hot airflow outlet; the thermoelectric power generation module comprises a heat exchange assembly and a power generation assembly, the heat exchange assembly is provided with a condensation side and an evaporation side, a condensation side inlet communicates with the cold airflow o