Automobile exhaust waste heat power generation device capable of enhancing heat transfer

Abstract

The invention discloses an automobile exhaust waste heat power generation device capable of enhancing heat transfer, which is arranged on an exhaust pipeline of an automobile and comprises a heat exchange assembly, a thermoelectric module and a cold exchange assembly, the heat exchange assembly is arranged on the exhaust pipeline, the thermoelectric module is arranged on the heat exchange assembly, and the cold exchange assembly is arranged on the thermoelectric module; the heat exchange assembly comprises an outer pipe body, the outer pipe body is connected with the exhaust pipeline in a sealed mode, and the thermoelectric module is arranged on the outer side of the outer pipe body. The cold exchange assembly comprises a cooling box, and the thermoelectric module is arranged between the outer pipe body and the cooling box; and the power output end of the thermoelectric module is communicated with an automobile storage battery. The surface temperature uniformity of the heat exchanger shell can be ensured, and the heat flux density and temperature uniformity of the hot ends of the thermoelectric modules are improved, so that the hot ends of more thermoelectric modules are heated, the total generating capacity of a thermoelectric generator is improved, and the utilization rate of automobile exhaust waste heat is improved.

Description

technical field [0001] The invention relates to the technical field of automobile waste heat recovery, in particular to an automobile tail gas waste heat power generation device which enhances heat transfer. Background technique [0002] Cars bring convenience to people's lives and promote social development. However, it also brings a series of problems, the most important ones are energy shortage and environmental pollution. According to statistics, automobiles account for 38% of global oil demand every year, and the carbon dioxide emitted by automobiles accounts for 16.4% of global emissions. For a typical internal combustion engine, on average, only 25% of the fuel energy is effective, that is, used to drive the car, about 5% is dissipated by friction, and the remaining 70% is exhausted in the form of heat or absorbed by the engine coolant. [0003] Therefore, waste heat recovery is of great significance to automobile energy saving and emission reduction. If a part of ...

AI Technical Summary

Problems solved by technology

The heat transfer coefficient of the exhaust pipe and heat exchanger is not high, which leads to the way of energy exchange between solid heat conduction and heat flow at the hot end. The heat transfer coefficient is small, the energy conversion efficiency is low, and a large space and heat transfer area are required. There is still room for breakthroughs in future research

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