宗露香,徐进良,刘国华

• 1:华北电力大学新能源电力系统国家重点实验室
• 2:低品位能源多相流与传热北京市重点实验室

摘要(Abstract)：

微通道沸腾不稳定性降低设备运行性能及传热特性。设计入口集成种子汽泡发生器的三角形硅基微通道热沉。搭建同步光学可视化测量实验台。研究加热膜长度、质量流量及种子汽泡触发频率对微通道内沸腾不稳定性及传热影响。结果表明:加热膜长度和质量流量作为控制沸腾不稳定性的关键参数,加热膜长度越长或质量流量越低,沸腾起始点和临界热流密度越早发生。单相液体区域,热流密度增大,压降略微降低,温度线性升高。汽液两相区域,热流密度增大,压降迅速增大,温度呈指数式上升。触发种子汽泡作为一种主动式控制技术,沸腾不稳定性得到抑制或消除,换热得到显著增强,是一种值得推广的技术。

关键词(KeyWords)： 微通道;沸腾不稳定性;沸腾曲线;种子汽泡

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金-国际合作交流资助项目(512101064);; 国家自然科学基金-广东省联合重点基金资助项目(U1034004)

作者(Author): 宗露香,徐进良,刘国华

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