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| Thermal Effect and Influencing Factors Analysis of 7075 Aluminum Alloy Plates in Natural Solar Radiation |
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| DOI：10.7643/issn.1672-9242.2023.06.020 |
| KeyWord:solar radiation thermal effect engineering algorithms coating colors roughness irradiance wind speed |
| Author | Institution |
| LEI Kai |
Aircraft Strength Research Institute of China, Xi'an , China |
| REN Zhan-peng |
Aircraft Strength Research Institute of China, Xi'an , China |
| LI Xuan |
Aircraft Strength Research Institute of China, Xi'an , China |
| MA Jian-jun |
Aircraft Strength Research Institute of China, Xi'an , China |
| WU Jing |
Aircraft Strength Research Institute of China, Xi'an , China |
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| Abstract: |
| The work aims to study the thermal effect of typical metal materials in the natural solar radiation environment and analyze the influence rules of different factors such as the properties of test pieces and environmental parameters. The influence of coating color, roughness, etc. on solar radiation thermal effect of 7075 aluminum alloy materials was analyzed by designing the test plan of solar radiation heat effect in natural environment, a steady temperature calculation algorithm under solar radiation environment was established. The field irradiance and temperature measurement data of 10 groups of test pieces within 20 days before and after September were obtained. Based on the data, the influence rules of coating color, roughness, etc. on thermal effect of materials were revealed. In addition, the error of the simplified algorithm and test data established in this paper was less than 5%, which had the advantages of high accuracy and simple form, could be used to predict the thermal effect of typical materials under a given irradiation intensity. For a specific test piece, irradiance and wind speed are the main factors affecting its thermal effect. When the radiation intensity changes in a high range, the temperature rise of the test piece is basically proportional to the irradiance. With the increase of wind speed in the natural environment, the temperature drop of the test piece decreases. |
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