Thermoelectric power generation device

Abstract

The invention discloses a thermoelectric power generation device. The device comprises a heat source pipeline, a circulating pipeline and multiple thermoelectric power generation sheets; the positiveelectrodes and negative electrodes of the thermoelectric power generation sheets are sequentially connected in series; the hot ends of the thermoelectric power generation sheets are attached to and fixed to the heat source pipeline; heat source gas is introduced into the heat source pipeline; the cold ends of the thermoelectric power generation sheets are attached to and fixed to a circulating pipeline; and refrigerating fluid is introduced into the circulating pipeline. According to the thermoelectric power generation device of the invention, the cooling liquid is used for cooling the cold ends of the thermoelectric power generation piece; the hot ends and cold ends of the thermoelectric power generation sheets can generate large temperature difference; heated water can be introduced intoa household heating pipeline to be recycled; and therefore, a heat energy utilization rate and power generation efficiency are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of thermoelectric power generation, in particular to a thermoelectric power generation device. Background technique [0002] Rural areas and other remote areas are areas where my country's economic and social development is relatively weak, and their power grid infrastructure is generally relatively backward. The power supply is mainly carried out by photovoltaic power generation, small hydropower, gas turbines, biomass, etc. These methods have their specific limitations and disadvantages , so it is very important to explore a new efficient and sustainable power generation mode. [0003] Thermoelectric power generation technology is a new type of clean power generation technology, which is characterized in that it can directly convert the difference in temperature into electrical energy, so as to realize the effective use of waste heat resources. It has no geographical restrictions, simple structure, strong ...

AI Technical Summary

Problems solved by technology

However, at present, domestic research on waste heat recovery and utilization of thermoelectric power generation is only in the laboratory stage, and the power generation efficiency is low, so it is difficult to popularize it on a large scale.

For example, the patent "Heat pipe type thermoelectric power generation energy storage and power transmission system applied to boiler tail flue" (CN107528499A) discloses a thermoelectric power generation unit. The hot surface is high temperature, and the cold-end heat pipe device relies on contact with the ambient atmosphere for evaporative cooling, that is, the cooling efficiency of the cold end depends on environmental factors and the evaporation area of ​​the cold-end heat pipe device, so it is difficult to ensure the temperature difference, and the power generation efficiency is low

For example, the patent "fireplace thermoelectric generator" (CN109120183A) discloses a thermoelectric power generation unit, the hot end of the thermoelectric power generation sheet is attached to the heat conduction plate, the heat conduction plate is attached to the outside of the chimney, and the cold end of the thermoelectric generation sheet is attached to the heat sink. And use the heat dissipation fan to realize the heat dissipation of the cold end of the thermoelectric power generation chip. Compared with the heat dissipation that directly contacts the heat exchange with the ambient air, the use of the heat dissipation fan can significantly improve the heat dissipation efficiency. However, due to the limitation of the ambient temperature, the cooling effect and temperature gradient have certain limitations, that is, the power generation efficiency is also greatly limited

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