A thermoelectric power generation device using metal foam to recover waste heat

Abstract

The invention belongs to the field of ultralow temperature waste heat in the design industry and discloses a thermoelectric power generation device for recovering waste heat by utilizing foam metal. The device comprises an air duct, foam metal, a thermoelectric piece stack and a cooling mechanism, wherein the air duct is connected with a waste gas pipeline, the foam metal is filled in the air ductand is used for absorbing heat of waste gas entering the air duct from the waste gas pipeline, the thermoelectric piece stack is coated outside the air duct, the cooling mechanism is arranged on theouter side of the thermoelectric piece stack, after the foam metal absorbs the heat of the waste gas in the air duct, the heat is transferred to one side of the thermoelectric piece stack through theair duct, the cooling mechanism reduces the temperature of the other side of the thermoelectric piece on the outer side of the thermoelectric piece stack, so that a temperature difference is formed onthe thermoelectric piece stack, and the thermoelectric piece stack converts the temperature difference into voltage output, so that power generation is realized. According to the invention, the ultralow temperature waste heat of the waste gas of a data center, and a building air conditioner, an SVG room and the like is effectively recovered, the heat energy is converted into the electric energy,so that the waste is changed into wealth, and the method is safe and reliable.

Description

technical field [0001] The invention relates to the field of industrial ultra-low temperature waste heat such as data centers, building air conditioners, and SVG rooms, and more specifically relates to a thermoelectric power generation device that uses foam metal to recover waste heat. Background technique [0002] With the rapid development of my country's economy, my country's annual total energy consumption continues to increase, and now my country has become the world's largest energy consumer. Among them, industrial energy consumption accounts for more than 70% of my country's total energy consumption, and at least 50% of industrial energy consumption is converted into industrial waste heat with different carriers and different temperatures. However, the recycling rate of industrial waste heat in my country is low, and only 30% of the waste heat can be recovered and utilized. The rest is emitted to the atmosphere or bodies of water as waste heat. [0003] Temperature ...

AI Technical Summary

Problems solved by technology

At present, it is mainly based on low-temperature organic Rankine cycle and Kalina cycle to recover low-temperature waste heat from 90°C to 200°C. Although many scientific research institutions have carried out some theoretical or small-scale experimental research on this system, there are still few blanks in practical application. It is also difficult for this system to achieve effective results for ultra-low temperature waste heat from room temperature to 100°C

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