Engine residual heat power generation device and power generation module thereof

Abstract

The invention discloses an engine residual heat power generation module which comprises a gas pipeline, a thermoelectric converter layer and a cooler layer, wherein an energy storage device layer is further arranged between the gas pipeline and the thermoelectric converter layer. The invention simultaneously discloses an engine residual heat power generation device, which at least comprises two stages of the engine residual heat power generation modules; and the gas pipelines, the thermoelectric converter layers and the cooler layers of the adjacent two stages of the engine residual heat power generation modules are communicated. The engine residual heat power generation module can absorb residual heat of exhaust gas and produce the temperature difference in the engine residual heat power generation module, and a thermoelectric converter can utilize the temperature difference for completing the power generation function. The use of the engine residual heat power generation module can improve the thermoelectric conversion efficiency of the thermoelectric converter, the use is convenient and the manufacture is simple.

Description

technical field [0001] The invention belongs to the technical field of reuse of engine waste heat, and particularly relates to an engine waste heat power generation device and a power generation module thereof. Background technique [0002] With the rising price of non-renewable petroleum energy and the continuous expansion of environmental pollution, environmental protection and energy saving have become the themes of today's social development. Investigations and studies have shown that only part of the energy emitted by the combustion of engine fuel is effectively utilized. The energy utilization rate of diesel engines is generally 34% to 38%, and the energy utilization rate of gasoline engines is generally 25% to 28%. Other energy is discharged to the engine. Outside the body, the heat taken away by the exhaust gas alone accounts for 30% to 45% of the heat generated by the fuel in the engine, while the heat taken away by the engine circulating cooling water accounts for ...

AI Technical Summary

Problems solved by technology

Using the waste heat power generation method of this invention patent, when the engine is running at high speed, the heat provided to the thermoelectric converter will be too much, and the temperature difference between the high temperature end and the low temperature end of the thermoelectric converter is too large, exceeding the optimum temperature difference range, making The thermoelectric converter cannot obtain the best thermoelectric conversion efficiency; when the engine is idling or idling, the exhaust heat from the engine is insufficient to meet the needs of the thermoelectric converter

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