Intelligent self-adaptive fin, fin module and application thereof to solar unmanned aerial vehicle

Abstract

The invention discloses an intelligent self-adaptive fin, a fin module and application thereof to a solar unmanned aerial vehicle. A temperature sensitive memory material is adopted locally on the side, facing the cooling incoming flow, of the fin, a cutting port perpendicular to the edge of the fin is formed in a local range, when the self temperature of the material is lower than the set temperature, the material shrinks along the cutting port, and thus an opening is formed in the side, facing the cooling incoming flow, of the fin; and the temperature sensitive memory material is adopted locally around a through hole by the fin, a plurality of cutting ports are formed in the local range, when the temperature gradient of the material reaches or exceeds the set gradient value, the materialis extruded and deformed along the cutting ports to form slits, and the air flow on one side of the fin can flow into the other side of the fin through the slits. According to the intelligent self-adaptive fin, the intelligent material is adopted locally, opening and slotting can be achieved according to the change of temperature and temperature gradient, an optimal structure can be transformed through the self-adaptive material under different temperature states, the heat transfer performance of the fin is improved, and thus the heat exchange rate of a heat exchanger is automatically increased.

Description

technical field [0001] The invention belongs to the field of fin heat exchangers, and specifically relates to an intelligent adaptive fin for improving heat transfer performance, an intelligent adaptive fin module, and improving heat transfer performance to increase energy utilization efficiency of solar drones application method. Background technique [0002] The requirement of solar UAV for long endurance is based on the efficient energy conversion of solar cells, and in the solar power generation system, the crystalline silicon cells under standard conditions (G0=1 000W m-2, t0=25℃) The power generation efficiency is 12% to 17%. In practice, the power generation efficiency of solar cells is much lower, because part of the heat makes the temperature of the battery surface rise. Studies have shown that for every 1°C increase in battery temperature, the power generation efficiency decreases by 0.5%. It can be seen that the research on solar cell cooling is very meaningful...

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