Rankine cycle-thermoelectric drive coupling waste heat recovery energy management system

Abstract

A Rankine cycle-thermoelectric drive coupling waste heat recovery energy management system comprises a Rankine cycle subsystem and a thermoelectric conversion subsystem, and the Rankine cycle subsystem comprises a heat exchanger, a turbine, a generator, a condenser and a pump; the heat exchanger adopts a multi-layer ribbed micro-channel heat exchanger and is integrally designed with the wall surface of the flame tube, so that high-grade heat energy is captured from the wall surface of the flame tube; the condenser adopts a multi-channel inflection type condensation heat pipe and is laid below the wing skin. The thermoelectric conversion subsystem comprises a thermoelectric driving device and a pump, is attached to the outer wall face of the combustion chamber and generates power through temperature difference formed by forced cooling of incoming flow of an outer duct, and electric energy generated by the thermoelectric driving device drives the pump to operate. The micro-channel heat exchanger and the thermoelectric driving device are combined, the micro-channel heat exchanger and the thermoelectric driving device have the advantages of being light, efficient and compact, energy capture maximization is achieved in a limited space, the purposes that the micro-channel heat exchanger and the thermoelectric driving device can be used up, and waste is turned into wealth are achieved, and the energy utilization efficiency of the aero-engine is effectively improved.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery equipment for civil aeroengines, in particular to a Rankine cycle-thermoelectric drive coupled waste heat recovery energy management system. Background technique [0002] As a pillar industry of the transportation industry, the civil aviation industry plays an important leading role in realizing zero carbon emissions and implementing energy conservation and emission reduction. As the power core of the aircraft, the aero engine is called the "heart of the aircraft". In order to achieve the goal of efficient and clean flight, improving the energy efficiency of the engine is the only way to go. [0003] However, the energy utilization rate of existing aero-engines is relatively low. For example, a large amount of high-grade heat energy is dissipated from the wall surface of the flame tube of the engine combustion chamber and the wall surface of the combustion chamber, and this part of hea...

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Problems solved by technology

[0003] However, the energy utilization rate of existing aero-engines is relatively low. For example, a large amount of high-grade heat energy dissipates from the flame tube wall of the engine combustion chamber and the combustion chamber wall, and this part of heat energy has not been recycled.

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