Abstract The thermal behaviour of an electronic equipment box under transient conditions is investigated. The box consists of a cabinet designed to contain electronic devices (such as infrared and visible cameras, hyperspectral sensors, etc.) carried on UAV systems and thermal control has to be assured only for the short duration (15–20 min) of each flight. Experiments were performed by considering a single component as electronic unit and different cooling systems, including forced convection of external or internal air and use of phase change/storage units (cold gel packs) inside the box. The best cooling solution was obtained by placing cold gel packs inside the box in combination with the internal ventilation, without any air exchange with external environment. A simple mathematical model was devised to simulate the thermal response of the component during the cooling transient and calculated results were successfully compared with experimental results. As a result, it is expected that the developed model could be used as a reliable tool for transient thermal management of an array of components inside the box, as encountered in UAV remote sensing applications.

中文翻译：

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瞬态条件下在无人机系统上运行的电子设备箱的冷却解决方案

摘要 研究了瞬态条件下电子设备箱的热行为。该盒子由一个机柜组成，旨在容纳无人机系统上携带的电子设备（如红外和可见光摄像机、高光谱传感器等），并且必须确保每次飞行的短时间（15-20 分钟）热控制. 通过将单个组件作为电子单元和不同的冷却系统进行实验，包括外部或内部空气的强制对流以及在盒子内使用相变/存储单元（冷凝胶包）。最好的冷却方案是在箱内放置冷凝胶袋，并结合内部通风，不与外部环境进行任何空气交换。设计了一个简单的数学模型来模拟冷却瞬态期间组件的热响应，并将计算结果与实验结果进行了成功的比较。因此，预计开发的模型可以用作可靠的工具，用于对盒子内的一系列组件进行瞬态热管理，如无人机遥感应用中遇到的那样。