System for supplying multiple energy sources through waste heat

The utility model relates to a system for supplying various energy sources by using waste heat. The system comprises a bearing atmosphere furnace, a thermoelectric power generation device, a heat exchanger and a cooling mechanism, a high-temperature flue gas outlet of the bearing atmosphere furnace is communicated with a flue gas inlet of the thermoelectric power generation device; the heat exchanger is communicated with the flue gas outlet of the thermoelectric power generation device and performs heat exchange with the flue gas outlet of the thermoelectric power generation device; the two ends of a cold electrode of the thermoelectric power generation device and the cooling mechanism form a circulation loop respectively. The over-temperature-difference power generation device converts high-temperature flue gas of the bearing atmosphere furnace into high-quality electric energy, the cooling mechanism with the circulation loop is matched with the heat exchanger to provide domestic hot water and air-conditioni