Campanale Manuela, Moro Lorenzo, Siligardi Cristina
Dipartimento di Ingegneria Industriale, Università degli Studi di Padova, via Venezia 1, 35131, Padova, Italy.
Dipartimento di Ingegneria "Enzo Ferrari", Università degli Studi di Modena e Reggio Emilia, via P. Vivarelli 10, 41125, Modena, Italy.
Sci Rep. 2025 Mar 11;15(1):8352. doi: 10.1038/s41598-025-93054-w.
This study investigated the thermal behavior of various sands types from different geographical locations and compositions. The thermal conductivity and heat capacity per unit volume were measured, and correlations with the bulk density, color, chemical composition, grain size, and solar reflectance were explored. The experimental data were compared with those of theoretical models, providing insights into the factors influencing the sand temperature under solar radiation. The results indicate that sand color and solar reflectance strongly influence temperature variations, where thermal conductivity is correlated with density. Microstructural analysis revealed differences between coral and non-coral sands. Chemical composition analysis suggested that the silica content may affect the thermal conductivity.
本研究调查了来自不同地理位置和成分的各种砂类型的热行为。测量了单位体积的热导率和热容量，并探讨了与堆积密度、颜色、化学成分、粒度和太阳反射率的相关性。将实验数据与理论模型的数据进行了比较，从而深入了解了太阳辐射下影响砂温度的因素。结果表明，砂的颜色和太阳反射率对温度变化有很大影响，其中热导率与密度相关。微观结构分析揭示了珊瑚砂和非珊瑚砂之间的差异。化学成分分析表明，二氧化硅含量可能会影响热导率。
