为提升氢燃料电池温度的一致性以及散热效能,以均温板作为研究对象,基于理论计算和试验验证搭建均温板计算模型。选取影响均温板传热性能的冷凝段长度、布置角度、冷却工质类型和充液率4个重要因素进行4因素3水平正交试验,并利用极差分析得到各因素各水平对均温板热阻和蒸发段工作面最大温差影响的权重关系。结果显示：在均温板热阻方面,冷却工质类型影响最为显著,冷却工质充液率次之,冷凝段长度对其影响最弱;在均温板蒸发段工作面最大温差方面,冷却工质充液率影响最为显著,冷凝段长度次之,冷却工质类型对其影响最弱。结合分析得到全组最佳组合方案,其热阻值为0.175 K/W,蒸发段最大温差为1.2 K,传热性能表现最佳。
Abstract
In order to reduce the thermal resistance and maximum temperature difference of the uniform temperature plate used in hydrogen fuel cell thermal management, a computational model of the uniform temperature plate is constructed based on theoretical calculations and experimental validation. A four-factor three-level orthogonal experimental optimization scheme is implemented to determine the significant factors affecting the heat transfer performance of the uniform temperature plate, including working fluid type, filling ratio, layout angle, and condenser length. Through range analysis, the weight relationship between the four factors and the thermal resistance and maximum temperature difference of the uniform temperature plate is obtained. The results show that the working fluid type has the greatest impact on the thermal resistance, followed by the filling ratio, while the condenser length has the least effect. For the maximum temperature difference on the evaporator surface of the uniform temperature plate, the filling ratio has the largest influence, followed by the condenser length, while the working fluid type has the smallest impact. By combining the analysis, the optimal combination for the model is determined, with a thermal resistance value of 0.175 K/W and the maximum temperature difference on the evaporator surface of 1.2 K, demonstrating the best heat transfer performance.
关键词
氢能 /
均温板 /
燃料电池 /
正交试验 /
热阻 /
温差
Key words
hydrogen energy /
uniform temperature plate /
fuel cell /
orthogonal test /
thermal resistance /
temperature difference
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基金
湖北省教育厅科学技术研究项目（B2022616）; 湖北省教育科学规划课题（2022GB245）
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