Annular array thermoelectric generator with functional gradient thermoelectric arms

Abstract

The invention discloses an annular array thermoelectric generator with functional gradient thermoelectric arms. The annular array thermoelectric generator comprises a high temperature end heat exchanger, a low temperature end heat exchanger, two sleeves, a plurality of P type thermoelectric arms and a plurality of N type thermoelectric arms of which the number is the same as that of the P type thermoelectric arms, wherein a fin is formed at the middle part inside a cylinder of the high temperature end heat exchanger, and a heat transfer arm is formed outside the cylinder; a cooling arm is formed at the middle part inside a cylinder of the low temperature end heat exchanger; the sleeves are sleeved outside the cylinder of the high temperature end heat exchanger; the low temperature end heat exchanger is sleeved at the other side of the heat transfer arm of the high temperature end heat exchanger, and the low temperature end heat exchanger is in contact with the sleeves; a pair of thermocouples are installed between the cooling arm and the adjacent heat transfer arm, and flow deflectors are respectively arranged between each pair of thermocouples and the cooling arm as well as the heat transfer arm; and the P type thermoelectric arms and the N type thermoelectric arms are sequentially connected in series by the connected flow deflectors. In the invention, industrial exhaust heat, vehicle emission exhaust heat, solar heat energy, human body temperature difference and other heat energy are used for generating electricity, and the generated electric energy can be directly used as a working power supply.

Description

technical field [0001] The invention relates to a thermoelectric generator, in particular to an annular array thermoelectric generator with functional gradient thermoelectric arms. Background technique [0002] Thermoelectric power generation is a power generation technology developed based on the Seebeck effect of thermoelectric materials. Two different types of thermoelectric materials, P-type and N-type, are connected at one end to form a PN junction, and placed in a high temperature state, and the other end is formed at a low temperature. Then Due to thermal excitation, the hole (electron) concentration at the high-temperature end of the P(N) type material is higher than that at the low-temperature end, so driven by this concentration gradient, the holes and electrons begin to diffuse to the low-temperature end, thereby forming an electromotive force. When the thermoelectric material completes the process of directly converting the heat input from the high temperature en...

AI Technical Summary

Problems solved by technology

Domestic research on thermoelectric power generation mainly focuses on the theory of generators and the preparation of thermoelectric materials, but research on the comprehensive design and application of thermoelectric generators is still lacking, so high-performance thermoelectric generators for different occasions are designed has very real meaning

At present, there are few research reports on annular array thermoelectric generators with functional gradients

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