Experimental study of multi-scale heat transfer characteristics at pool boiling
Experimental study of multi-scale heat transfer characteristics at pool boiling
复制标题
池沸腾多尺度传热特性实验研究
DOI：
10.1088/1742-6596/785/1/012007
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
A. Surtaev
中科院分区：
文献类型：
--
作者：
V. Serdyukov;A. Surtaev
本文介绍了液体池沸腾传热的局部和整体特性的实验研究结果。饱和乙醇和水被用作工作流体。沉积在蓝宝石衬底上的薄的、绝热加热的氧化铟锡膜用作加热器。采用帧频为1000 fps、分辨率为0.13 μm/px的高速红外热像仪和高速摄像技术，对加热器表面温度场和汽泡运动进行了同步测量。本文介绍了在不同热流密度和过热度条件下的主要局部沸腾特性，如核化点密度、汽泡动力学、时间特性和核化频率的新数据，并与关联式进行了比较。
This study presents the results of the experimental investigation of local and integral characteristics of heat transfer at liquid pool boiling. Saturated ethanol and water were used as the working fluids. Thin, resistively heated indium-tin oxide films deposited onto the sapphire substrates were used as the heaters. The synchronized measurements of the heater surface temperature field and dynamics of vapor bubbles were performed by high-speed infrared thermography with the frame rate of 1000 fps and resolution of up to 0.13 μm/px and high-speed video recording. In this paper new data on major local boiling characteristics, such as nucleation site density, dynamics of vapor bubbles, temporal characteristics and nucleation frequency at different heat fluxes and superheating and their comparison with correlations are presented.