Shortwave radiation, longwave radiation, photovoltaic (PV) panel, air and near-surface water temperature data were measured for a floating PV system installed in a shallow tropical reservoir. Similar air and water temperature measurements were conducted in open water (ambient condition) for comparison. The data indicate that shortwave radiation is reduced significantly under the PV panels while the longwave radiation increased, and in fact became higher than the shortwave radiation as compared to open water conditions. The air temperature and the water temperature under the PV panels are higher than in open water. A numerical model was developed to predict the PV panel temperature, air and water temperatures beneath the panels and to investigate the heat balance at the reservoir surface, beneath the panels. The modelled air and PV panel temperatures were in good agreement with the field data. The modelled surface water temperature also replicated field measurements showing an increase of about 0.5 °C as compared to the open water temperature. Heat budget analysis showed that the thermal dynamics under the PV panels is mainly controlled by the longwave radiation from the PV panels and reduction in latent heat flux. The altered flux conditions beneath the panels result in a higher equilibrium temperature near the water surface, compared to open water conditions.

对于安装在浅层热带水库中的浮动光伏系统，测量了短波辐射、长波辐射、光伏 (PV) 面板、空气和近地表水温数据。在开放水域（环境条件）中进行了类似的空气和水温测量以进行比较。数据表明，PV 面板下的短波辐射显着降低，而长波辐射增加，实际上与开放水域条件相比，短波辐射高于短波辐射。光伏板下方的空气温度和水温高于开放水域。开发了一个数值模型来预测光伏面板温度、面板下方的空气和水温，并研究面板下方蓄水池表面的热平衡。模拟的空气和光伏面板温度与现场数据非常吻合。模拟的地表水温还复制了现场测量结果，显示与开放水温相比，增加了约 0.5 °C。热预算分析表明，光伏板下的热动力学主要受光伏板的长波辐射和潜热通量的减少控制。与开放水域条件相比，面板下方改变的通量条件导致水面附近的平衡温度更高。热预算分析表明，光伏板下的热动力学主要受光伏板的长波辐射和潜热通量的减少控制。与开放水域条件相比，面板下方改变的通量条件导致水面附近的平衡温度更高。热预算分析表明，光伏板下的热动力学主要受光伏板的长波辐射和潜热通量的减少控制。与开放水域条件相比，面板下方改变的通量条件导致水面附近的平衡温度更高。