Engine waste heat utilization system based on bionic uniform heating plate and pulsating heat pipe phase change heat storage technology

Abstract

The invention discloses an engine waste heat utilization system based on a bionic uniform heating plate and pulsating heat pipe phase change heat storage technology. A pulsating heat pipe phase changeheat accumulator based on the bionic uniform heating plate and pulsating heat pipe phase change heat storage technology is additionally installed in a cooling system. The device adopts the bionic uniform heating plate and pulsating heat pipe phase change heat storage technology, and the internal space of the device is partitioned. Cooling water and the waste heat in exhaust gas can be absorbed and stored in a water cooling region, a gas cooling region and a phase change heat storage region, the cold air is preheated in a gas preheating region, and therefore starting of an engine in a cold environment is facilitated. A bionic uniform heating plate, pulsating heat pipe and carbon nano tube paraffin phase change heat storage material in the device has an enhanced heat transfer effect, greatly improves the heat dissipation efficiency, enables heat transfer to be uniform, and avoids the phenomenon of local overheating. By the adoption of the engine waste heat utilization system, comprehensive utilization of the engine waste heat is achieved, the energy utilization rate is improved, and the purposes of saving resources and protecting the environment are achieved.

Description

technical field [0001] The invention belongs to the field of power machinery, and in particular relates to an engine waste heat utilization system based on bionic vapor chamber and pulsating heat pipe phase change heat storage technology. Background technique [0002] According to the evaluation of existing internal combustion engine indicators, about 60% of the energy in fuel oil has not been effectively utilized, and most of it is discharged into the atmosphere in the form of waste heat, causing huge economic losses and serious environmental pollution. The waste heat of the car is mainly discharged in two ways: the first is the water circulation of the cooling system to dissipate heat, and the second is the exhaust system to dissipate heat through the vehicle exhaust. A large amount of high-temperature waste heat is directly discharged into the atmosphere, causing heat loss and environmental pollution. pollution. If these two parts of heat can be stored and utilized while...

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Problems solved by technology

[0003] In the cold winter, due to the low external ambient temperature, it is difficult to start the engine, the engine wear will be aggravated during the start process, and the life of the engine will be shortened; the external engine preheating device needs to consume additional energy. The waste heat engine system uses the energy discharged from the cooling system for engine preheating, which can not only solve the problem of heat loss in the cooling system and exhaust system, improve energy utilization efficiency, but also realize engine preheating, making it easier for the car to operate in a low temperature environment. to start

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