非均匀热物理场强迫风冷传热优化设计研究

针对某大功率、高热流密度梯度、非均匀热物理条件的集成模块,基于均温技术进行传热优化设计研究,应用数值仿真和试验测试的研究方法,将初始无热管方案、倒装方式均温热管方案和正装方式均温热管方案进行对比。结果表明,在相同的风速工况下,倒装方式的均温热管方案相对初始无热管方案散热器温升减小10.3~11.0 K,最大降幅达18%,均温效果最大提升32.5%;相对于倒装方式的均温热管方案,正装方式均温热管方案在温升方面可进一步减小6.9~9.4 K,最大降幅达19.3%,均温效果进一步提升83.6%,传热效率非常显著。

轨道交通车辆风冷散热器传热优化研究

翅片散热器的散热效率很大程度上受材料热导率限制,为进一步提高翅片散热器的散热能力,基于均温热管、相变抑制(PCI)、均温板(VC)以及3D相变等散热技术,从传热方式上对散热器的翅片侧和热源侧分别进行优化;对优化后的散热器样机分别进行测试,并与当前在用的翅片散热器进行对比。研究结果表明:对散热器热源侧和翅片侧的优化均有效提升了散热效率,降低了散热器温升,并提高了均温性,且对散热器热源侧的优化比对翅片侧的优化效果更好。结合翅片侧和热源侧的优化特点,对散热器整体进行优化所得的3D相变散热器性能最优,比传统翅片散热器的温升降低了约65%,温差降低了约55%。

Analytic computation on the forcible thawing temperature field formed by a single heat transfer pipe with unsteady outer surface temperature

A comprehensive and systematic research on the forcible thawing temperature field formed by a single heat transfer pipe with unsteady outer surface temperature was carried out by analytic computation according to the theory of similitude. The distribution law of thawing temperature field, calculation formulas of thawing radius b, heat flux density q and average thawing temperature T were obtained. It theoretically explains that the main influential factors of thawing radius b, heat flux density q and thawing average temperature T are K,f, Lx and co（l）, but Lc affects little. Finally, based on the forcible thawing project of Hulusu air shaft lining, the field data indicate that the analytical formulas of this article are comparatively accurate.

燃煤热镀锌炉浅析与新型燃煤均温热镀锌炉

化锌炉是热浸镀锌的基础设备,国内外对它已有诸多研究,实际应用上也有了长足的发展。但其研究多倾向于以电、油为燃料,而对烧煤的炉子研究较少。在煤炭资源丰富地区,燃煤炉的研究,适应就地需要,有其现实意义。