Abstract This experimental study investigates the effect of passive cooling of electronic devices using a latent heat storage unit (LHSU) filled with n-eicosane as phase change material (PCM),under steady-state and transient heating operations. A pin–fin heat sink of square configuration, made of aluminum, pin-fins acted as a thermal conductivity enhancers (TCEs), is used to augment the rate of heat transfer through n-eicosane which has low thermal conductivity. A range of input heating loads from 1.2 – 2.8 kW / m 2 with an interval of 0.4 kW / m 2 are applied at the base of LHSU, filled at three different volumetric fractions of n-eicosane, to quantify the steady-state and transient heat transfer characteristics for different operation modes for reliable passive cooling of electronics. The results are reported under two phases i.e. steady-state and transient heating, and thermal performance of LHSU is elucidated in terms of enhancement in operation time, enhancement ratio, effect of PCM amount and various usage modes under different heating loads.

中文翻译：

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LHSU 在稳态和瞬态操作模式下用于电子设备的热性能

摘要 本实验研究了在稳态和瞬态加热操作下使用填充正二十烷作为相变材料 (PCM) 的潜热存储单元 (LHSU) 对电子设备进行被动冷却的效果。方形结构的针翅式散热器由铝制成，针翅用作导热增强剂 (TCE)，用于增加通过具有低导热性的正二十烷的热传递速率。在 LHSU 的底部施加 1.2 – 2.8 kW / m 2 的输入热负荷范围，以 0.4 kW / m 2 的间隔填充，以三种不同体积分数的正二十烷填充，以量化稳态和瞬态不同操作模式的传热特性，以实现可靠的电子被动冷却。结果报告分为两个阶段，即