Phase-change coupling bionic fin type automobile exhaust waste heat step power generation system

Abstract

The invention relates to a phase-change coupling bionic fin type automobile exhaust waste heat step power generation system. The system comprises an inner layer heat conduction structure, a middle semiconductor temperature difference power generation module and an outer layer fin radiator. The inner layer heat conduction structure is tightly attached to the outer wall of an exhaust pipe of an automobile, and the whole body of the inner layer heat conduction structure is in a hexagonal prism shape so as to supply a flat attachment point for the temperature difference power generation module; the heat conduction structure is filled with phase-change material fused salts so that the temperature of the outer wall of the heat conduction structure is uniform and constant and the heat in the automobile exhaust waste is accumulated. The middle semiconductor temperature difference power generation module employs a dual-layer design, the inner layer power generation module and the outer layer power generation module select different thermoelectric materials according to respective actual working temperature areas, and the optimal working temperature areas of the two power generation modulesare matched with the actual temperature areas of the two power generation modules so that the two layers of power generation modules work at the optimal temperature, and the cascade utilization of theautomobile exhaust waste heat is achieved. The outer layer fin radiator adopts a leaf-shaped bionic structure, and forced convection heat dissipation is performed by utilizing air flow generated whenan automobile runs. The automobile exhaust can be used for generating power, and the waste heat utilization of the exhaust is achieved.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to a phase change coupled bionic fin type automobile exhaust waste heat cascade power generation system. Background technique [0002] The automobile industry is one of the pillar industries of my country's national economy. With the development of my country's automobile industry, the energy saving of vehicles has attracted more and more attention. However, more than 60% of the energy in the fuel consumed by the internal combustion engine has not been effectively utilized, and most of the energy is discharged into the atmosphere in the form of waste heat from automobile exhaust, causing huge economic losses and energy waste. If this part of energy is recycled reasonably, the fuel consumption of the car can be greatly saved, and the goal of energy saving and emission reduction can be achieved at the same time, which has good social and economic benefits. [0003] Th...

AI Technical Summary

Problems solved by technology

[0006] At present, there are some automobile exhaust power generation systems on the market, but unfortunately, these power generation systems all have low power generation efficiency and are huge in size

Most of similar systems use water cooling for heat dissipation at the cold end, which has a complex structure, high manufacturing cost, and low reliability; moreover, there is a lot of heat loss at the cold end, which does not effectively utilize the heat of automobile exhaust

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