Exhaust pipe for generating power by using waste heat of automobile exhaust

Abstract

The invention provides an exhaust pipe for generating power by using waste heat of automobile exhaust. The exhaust pipe comprises a soaking pipe and a thermoelectric power generation device, the soaking pipe comprises an inner pipe and an outer pipe, the inner pipe forms the inner wall of a heat pipe, and the outer pipe forms the outer wall of the heat pipe; the inner pipe and the outer pipe are connected through a plurality of spacers, the spacers are evenly arranged in the circumferential direction of the outer side of the inner pipe, the spacers divide a space formed by the inner wall and the outer wall of the soaking pipe into a plurality of subspaces, the two ends of each subspace are in a closed state, and a working medium is injected into each subspace; the thermoelectric power generation device is formed by connecting a plurality of soaking modules in series, arranged at the periphery of the soaking pipe and distributed in the length direction of the soaking pipe; and each soaking module is connected with a plurality of thermoelectric pieces in series, and the thermoelectric pieces are distributed in the circumferential direction of the soaking pipe in a surrounding manner. The strong conduction and heat storage capacity of the soaking pipe is utilized, so that the temperature of the hot ends of the thermoelectric pieces is uniform and small in fluctuation, and thermoelectric conversion efficiency is improved. The heat of the automobile exhaust is effectively subjected to energy conversion and reutilization.

Description

technical field [0001] The invention belongs to the technical field of automobile equipment, and specifically provides an exhaust pipe for generating electricity by utilizing waste heat of automobile tail gas. Background technique [0002] With the energy shortage and environmental problems becoming more and more prominent, the efficient and clean utilization of energy has been paid more and more attention by the society. With the increase of automobile consumption and ownership, the contradiction between energy and automobile consumption will become increasingly intensified. In my country, motor vehicles consume 85% of the total gasoline output and 42% of the total diesel output. It is imperative to develop energy-saving and clean vehicles. Row. Although the automotive industry is currently vigorously promoting electric vehicles, the market share is relatively low due to factors such as battery life, reliability in cold weather, safety, pollution of the environment by waste...

AI Technical Summary

Problems solved by technology

[0003] At present, the fuel efficiency of most internal combustion engine vehicles is low, and the energy discharged from the engine cooling water and exhaust gas in the form of waste heat accounts for 58% to 70% of the total combustion energy (diesel engine) or 55% to 61% (gasoline engine), resulting in A lot of energy wasted

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