Abstract Sloped solar collector (SSC) is more efficient than horizontal solar collector due to its greenhouse effect and chimney effect driving the updraft. Large-scale SSC is proposed to be constructed on natural mountain slope to enhance the performance of solar chimney power generation. However, the surfaces of the natural mountain slopes always are not flat or even linearly rising but curving. In this paper, the thermal performance of curved-slope solar collector is studied based on two-segment slopes and compared with that of the linearly-rising-slope SSC. Results show that the optimal slope angle (OSA) of an SSC for reaching the maximum annual total solar radiation (ATSR) intensity is a little lower than the local latitude, and the maximum ATSR intensity is far higher than those on horizontal and vertical solar collectors. Furthermore, from a low point to a high point, the linearly rising slope (LRS) is the best for constructing solar collector compared to all the potential two-segment slopes. Furthermore, among the potential two-segment slopes, the slope of two closer slope angles is better. The conclusions are suitable for multi-segment slopes and curved slopes. This paper lays a solid foundation for location selection and design of SSC in future.

中文翻译：

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弯坡太阳能集热器的热性能

摘要 倾斜太阳能集热器（SSC）由于其温室效应和烟囱效应驱动上升气流而比水平太阳能集热器更有效。拟在天然山坡上建设大规模SSC，以提高太阳能烟囱发电性能。然而，天然山坡的表面总是不是平坦的，甚至不是直线上升的，而是弯曲的。在本文中，基于两段斜坡研究了弯曲斜坡太阳能集热器的热性能，并与线性上升斜坡SSC的热性能进行了比较。结果表明，SSC 达到最大年总太阳辐射 (ATSR) 强度的最佳倾斜角 (OSA) 略低于当地纬度，而最大 ATSR 强度远高于水平和垂直太阳能集热器。 . 此外，从低点到高点，与所有潜在的两段斜坡相比，线性上升斜坡 (LRS) 是构建太阳能集热器的最佳选择。此外，在潜在的两段斜率中，两个更接近的斜角的斜率更好。该结论适用于多段斜坡和曲线斜坡。本文为今后SSC的选址和设计奠定了坚实的基础。