Research Article
Study on the Optical Properties of Triangular Cavity Absorber for Parabolic Trough Solar Concentrator
Table 4
The orthogonal experimental results of standard deviation of irradiance on cavity absorber.
| | Number | | | | Standard deviation of irradiance |
| | 1 | 1 | 1 | 1 | 32727 | | 2 | 1 | 2 | 2 | 30324 | | 3 | 1 | 3 | 3 | 26599 | | 4 | 2 | 1 | 2 | 29980 | | 5 | 2 | 2 | 3 | 26621 | | 6 | 2 | 3 | 1 | 31008 | | 7 | 3 | 1 | 3 | 25257 | | 8 | 3 | 2 | 1 | 30918 | | 9 | 3 | 3 | 2 | 29679 | | Average 1 | 29883.333 | 29321.333 | 31551.000 | | | Average 2 | 29203.000 | 29287.667 | 29994.333 | | | Average 3 | 28618.000 | 29095.333 | 26159.000 | | | Range | 1265.333 | 226.000 | 5392.000 | | | Primary and secondary factors | | | Optimization | |
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