Big pipe diameter high-temperature flue gas residual heat semiconductor temperature differential generating system

Abstract

A big pipe diameter high-temperature flue gas residual heat semiconductor temperature differential generating system belongs to the technical field of energy saving and comprises a thermoelectric conversion module and a battery or load. The big pipe diameter high-temperature flue gas residual heat semiconductor temperature differential generating system is characterized in that the thermoelectricconversion module comprises a single-surface heated semiconductor temperature differential generating module (2) arranged on the outer wall of a pipe, and an array-distributed double-surface heated semiconductor temperature differential generating module (1) arranged in the pipe along the streamline way, wherein the joint surface of the single-surface heated semiconductor temperature differentialgenerating module (2) and the outer wall of the pipe is a heated surface and the other surface is a cooling surface; the inner part of the array-distributed double-surface heated semiconductor temperature differential generating module (1) is a cooling channel (10), and the surface of the periphery contacting with high-temperature flue gas is a heated surface; and the inner cooling channel (10) adopts a water-cooling or air-cooling mode. Because the array-distributed double-surface heated semiconductor temperature differential generating module (1) leads the inner part of the pipe to be blocked, the blockage ratio is 0.2-0.3. The invention can fully utilize the flue gas residual heat aiming at the big pipe diameter, and has high heating converting efficiency.

Description

technical field [0001] The invention relates to a large-diameter high-temperature flue gas waste heat semiconductor thermoelectric power generation system, which is applied to the high-temperature flue gas waste heat recovery of various pipelines and belongs to the technical field of energy saving. Background technique [0002] At present, the known flue gas waste heat recovery mostly uses heat exchangers to heat air, water and other methods to recover heat energy, which is a low-grade energy recovery technology. The semiconductor temperature difference power generation technology uses the temperature difference between the flue gas and the cold end to directly generate high-grade electric energy for use. It is a new high-grade energy recovery and energy-saving technology. Due to the different sizes of the high-temperature flue, in the structure designed in the patent "A Semiconductor Thermoelectric Power Generation Device" (Patent No. 200720047891.1), the waste heat of the...

AI Technical Summary

Problems solved by technology

Due to the different sizes of the high-temperature flue, in the structure designed in the patent "A Semiconductor Thermoelectric Power Generation Device" (Patent No. 200720047891.1), the waste heat of the internal flue gas cannot be recovered, and the recovery efficiency is low

The hub-type heat collection system designed in the patent "Pipeline Waste Heat Recovery Semiconductor Thermoelectric Power Generation Method and Device" (Patent No. 200810021366.1) essentially only arranges thermoelectric power generation elements on the outer wall of the flue. The heat in the air is transmitted to the wall through heat conduction. This design does not fully recover the heat of the internal flue gas; at the same time, this design has a large flow resistance, and the power generated by the thermoelectric power generation element is not even enough to maintain the energy consumed by the flow resistance.

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