Aviation-used fuel cell system radiator and aviation-used fuel cell system

Abstract

The invention discloses an aviation-used fuel cell system radiator which comprises N layers of laminatedly superimposed corrugated pieces, wherein the N is a natural number larger than or equal to 2; ridges and grooves which are alternately arranged at intervals are arranged on the surfaces of the two side surfaces of the corrugated pieces, adjacent corrugated piece layers are welded through the ridges to form (N-1) layers of channel structures, and the condition that the adjacent corrugated piece layers are welded through the ridges means that the ridges on the upper surfaces of the lower-layer corrugated pieces and the ridges on the lower surfaces of the upper-layer corrugated pieces are welded in a one-to-one corresponding mode; the radiator further comprises sealing end sockets arranged at the two ends of channels, wherein gaps are reserved between the sealing end sockets and the opening ends of the channels; a heat radiation work medium inlet is formed in one sealing end socket, and a heat radiation work medium outlet is formed in the other sealing end socket. Compared with the prior art, the radiator disclosed by the invention has a simple structure and avoids additional fans; meanwhile, cooling fins of the radiator are in shapes of thin-plate-shaped corrugated pieces; air turbulence of a heat radiating surface is improved by utilizing aviation flying airflow, a heat radiating effect is good, and flying resistance of an airplane is prevented from being increased.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a radiator for an aviation fuel cell system. Background technique [0002] The system efficiency of today's fuel cell technology is 25%-60%, so 40%-75% of the internal energy of the fuel needs to be discharged to the environment through the radiator in order to maintain the isothermal operation of the entire fuel cell system. This puts high demands on the heat dissipation system of fuel cells, especially for portable fuel cell systems. A lighter and more compact heat sink design will greatly improve the energy and power density of the battery system. [0003] The radiators of fuel cell systems that power small aircraft generally use finned tube radiators or plate-fin radiators, which need to be equipped with fans, which increase the internal friction of the battery system and the heavy metal material of the radiator itself increases the weight of the system. Similar finned he...

AI Technical Summary

Problems solved by technology

Similar fin radiators also have the problem of low temperature difference between the fins far from the heat source and the environment, resulting in low area utilization of the heat sink

In order to achieve a better heat dissipation effect, the use of heat sinks can only be increased, or the height of the heat sink can be increased, which seriously wastes metal materials and increases the volume and weight of the heat sink.

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