Thermoelectric power generation device with airflow state self-adaptive function and power generation method

Abstract

The invention discloses a thermoelectric power generation device with an airflow state self-adaptive function and a power generation method; the thermoelectric power generation device mainly comprisesan electric control module, an air inlet end cover, a flow guide module, a heat collection box body, thermoelectric modules, cooling fins and an exhaust end cover; the device can be used for waste heat recovery of high-temperature air flow; hot air flows from the air inlet end cover, is guided by the flow guide module and then is diffused to the heat collection box body; the temperature of the heat collection box body is increased due to heating of the hot air flow to form a heat source of each thermoelectric module; the thermoelectric module, by taking the wall surface of the heat collectionbox as a heat source, and taking the cooling fins as a cold source, forms a temperature difference between the two working surfaces, so that electric energy is generated; the flow guide module is controlled by the electric control module, and the angle of a flow guide plate can be adjusted; and the electric control module is used for guiding the air flow by a reasonable flow guiding angle and controlling the flowing state of the air flow in the heat collecting box body according to temperature and pressure signals, so that reasonable utilization of the heat of the air flow is realized, and itis guaranteed that the device can keep relatively high power generation under different working conditions.

Description

technical field [0001] The invention belongs to the technical field of energy recovery and utilization, and in particular relates to a thermoelectric power generation device and a power generation method with an airflow state self-adaptive function. Background technique [0002] With the worldwide energy shortage, countries are working on energy conservation and emission reduction, striving for sustainable development. Based on such energy status, waste heat utilization has become an increasingly important energy-saving direction, and strengthening the recovery and utilization of industrial waste heat is of great significance for energy conservation and emission reduction. Waste heat can be divided into three types according to temperature: low, medium and high temperature. Among them, my country's low-temperature waste heat (below 350°C) has the highest output ratio, about 60%. The main sources of low-temperature waste heat include blast furnace exhaust gas in industrial p...

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Problems solved by technology

However, the installation of this device needs to open holes in the flue gas channel, and then penetrate the semiconductor material into the flue gas channel. This structure will affect the sealing of the flue gas duct, and even cause problems such as gas leakage and noise.

[0005] Chinese patent (CN204425205U) discloses a kind of automobile exhaust air temperature difference power generation device, this device adds masonry prism in the exhaust pipe, heat energy is recovered by arranging thermoelectric power generation slices on the masonry prism, and engine coolant is used to cool the device to Increase the temperature difference between the two sides of the thermoelectric generator sheet; however, the design of the masonry prism-shaped pipeline may increase the exhaust resistance, and the device cannot be dynamically adjusted to adapt to the operating state of the engine

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