A heat exchange system and device for utilizing waste heat of engine exhaust gas

Abstract

The invention relates to a heat exchange system and a device for utilizing waste heat of engine tail gas, belonging to the technical field of refrigeration. Aiming at the high temperature of engine exhaust waste heat, which has not been effectively utilized at present, and with the promotion of new energy vehicles such as electric vehicles and the reduction of power consumption and other application backgrounds, a new type of exhaust heat exchange system and device has been developed, specifically The difference between the two schemes, scheme 1 and scheme 2, is that the connection sequence of the three generators changes, and the structure and connection of the rest are consistent. , first pressure control valve, second pressure control valve, third one-way valve, condenser, second pressure reducing valve, throttle valve, evaporator, second one-way valve, absorber, water pump, water tank, solution pump , The first one-way valve, the first decompression valve, and the hand valve are driven by the exhaust heat of the engine exhaust, which can realize the cooling effect of the vehicle air conditioner while saving the energy consumption of the vehicle.

Description

technical field [0001] The invention relates to a device for utilizing waste heat of engine exhaust gas, in particular to a new type of absorption waste heat generator and superheater which utilizes the waste heat of engine tail gas and engine cylinder to improve the efficiency of waste heat utilization and the efficiency of waste heat utilization absorption refrigeration device systems and devices. Background technique [0002] The combustion temperature of the engine combustion chamber can be as high as 1700-2500°C, and the cylinder head, cylinder wall, and exhaust pipe that are in direct contact with the high-temperature gas need to take appropriate cooling measures, and studies have shown that the heat directly discharged with the engine exhaust pipe Accounting for more than 30% of the combustion heat, the development and utilization of its exhaust waste heat is of great significance to energy conservation and emission reduction. At the same time, the promotion and popul...

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Problems solved by technology

[0007] The technical problem to be solved in the present invention is: for the high temperature of engine exhaust waste heat, which has not been effectively utilized so far, and with the promotion of new energy vehicles such as pure electric and hybrid vehicles, the consumption of electric energy can be reduced and the unit mileage can be effectively increased. Developing a new type of exhaust gas waste heat heat exchange system and device, which can save the energy consumption of automobiles and realize the cooling effect of vehicle air conditioners. In addition, it can also reduce the environmental pollution caused by fuel consumption.

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