Energy recovery device and method for lng engine based on temperature difference power generation technology

Abstract

The invention discloses a liquefied natural gas (LNG) engine energy recovery device and an energy recovery method based on the thermoelectric power generation technology. The LNG engine energy recovery device comprises a thermoelectric generator, wherein an air discharge outlet of an LNG tank is connected with the thermoelectric generator through an LNG air inlet pipe, and an LNG air outlet pipe of the thermoelectric generator is connected with a mixer after assign through a filter and a voltage stabilizer. According to the LNG engine energy recovery device and the energy recovery method based on the thermoelectric power generation technology, the LNG gasification function is achieved, energy recovery is achieved by using the thermoelectric power generation technology, waste heat energy of an engine is used, peculiar cold energy of an LNG vehicle is used, energy recover efficiency is improved to the maximum degree, fuel economy of the vehicle is improved, and heat management of the LNG engine can be achieved due to the fact that intake air temperature of the engine can be controlled by adjusting parameters such as flow of cooling liquid and load of the thermoelectric generator.

Description

technical field [0001] The invention relates to the technical field of thermoelectric power generation, in particular to an LNG engine energy recovery device and method based on thermoelectric power generation technology. Background technique [0002] With the rapid development of my country's motor vehicle population, automobiles not only bring us a lot of convenience, but also bring us huge challenges in terms of energy and environmental protection. By the end of 2011, the national motor vehicle population was 225 million, of which There are 106 million cars alone, among which the engine is still the main source of power. Although the engine has experienced more than 100 years of development, its thermal efficiency is still low, as many as 60% of the energy in the fuel has not been effectively utilized, and the heat taken away by the engine exhaust alone accounts for 30% of the fuel combustion heat ~45%, the heat used for cooling accounts for about 30%, and most of these e...

AI Technical Summary

Problems solved by technology

Although the engine has experienced more than 100 years of development, its thermal efficiency is still low, as many as 60% of the energy in the fuel has not been effectively utilized, and the heat taken away by the engine exhaust alone accounts for 30% of the fuel combustion heat ~45%, the heat used for cooling accounts for about 30%, and most of this energy is lost to the air in the form of waste heat, resulting in huge energy waste and serious environmental pollution

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