An experimental investigation on transpiration cooling performances using solid hydrogel as coolant
An experimental investigation on transpiration cooling performances using solid hydrogel as coolant
复制标题
使用固体水凝胶作为冷却剂的蒸腾冷却性能的实验研究
DOI：
10.1016/j.applthermaleng.2019.113753
复制
发表时间：
2019-07
影响因子：
6.4
通讯作者：
Zhou Zihe
中科院分区：
文献类型：
--
作者：
Qian Kang;Wang Jianhua;He Fei;Wu Yadong;Zhou Zihe
本文对高超声速飞行器热防护新概念--凝固水发汗冷却技术进行了实验研究。本文以市售高吸水性树脂SAP-50为原料制备溶胀水凝胶，并对自制水凝胶进行了热重分析。为了加强固体水凝胶内部的换热，在固体水凝胶中嵌入了一层泡沫铜。在热风洞中对多孔平板样品进行了发汗冷却实验，并用红外热成像系统对水凝胶和水、有无泡沫铜的冷却特性进行了比较。原始热像和比较结果表明：(1)固体水凝胶和液态水可以提供近似的发汗冷却效果。(2)与液态水冷却不同，水凝胶冷却剂的作用时间更长，冷却效果分布更均匀。(3)在没有冷却剂喷射力的发汗冷却系统中，在冷却剂腔内安装泡沫铜可以提供更好的冷却性能和更长的有效时间。
This paper presents an experimental investigation on a new conception of thermal protection techniques for hypersonic vehicles, namely, transpiration cooling using solidified water as coolant. In the work, a commercial superabsorbent polymer, SAP-50, was used to make swollen hydrogel, and then a thermogravimetric analysis test of the home-made hydrogel was conducted. To enhance the heat transfer inside the solid hydrogel, a copper foam was embedded. The transpiration cooling experiments were carried out with a porous flat plate specimen in a hot wind tunnel, and the cooling characteristics captured by an infrared thermal imaging system are exhibited and compared between the hydrogel and water, with and without the copper foam. The original thermal images and the comparisons reveal the following novel and valuable phenomena: (1) Solid hydrogel and liquid water can provide approximate transpiration cooling effect. (2) Different from liquid water cooling, the hydrogel coolant can provide a longer acting time, and get a more homogenous cooling effectiveness distribution. (3) In the transpiration cooling systems without coolant injection force, the copper foam installed in the coolant chamber can provide a better cooling performance and longer effective time.
登录
查看更多内容
影响因子：
2.1
作者：
A. V. Foreest;M. Sippel;A. Gülhan;B. Esser;B. Ambrosius;K. Sudmeijer
通讯作者：
A. V. Foreest;M. Sippel;A. Gülhan;B. Esser;B. Ambrosius;K. Sudmeijer
影响因子：
2.7
作者：
M. Peralta;F. Méndez;O. Bautista
通讯作者：
M. Peralta;F. Méndez;O. Bautista
影响因子：
3.4
作者：
P. Jiang;Gan Huang;Yinhai Zhu;R. Xu;Zhiyuan Liao;Taojie Lu
通讯作者：
P. Jiang;Gan Huang;Yinhai Zhu;R. Xu;Zhiyuan Liao;Taojie Lu
DOI：
10.1016/j.ijheatmasstransfer.2010.07.019
发表时间：
2010-11-01
影响因子：
5.2
作者：
Liu, Yuan-Qing;Jiang, Pei-Xue;Sun, Ji-Guo
通讯作者：
Sun, Ji-Guo
超声速条件下相变蒸腾冷却的实验研究
影响因子：
6.4
作者：
Shen, Lin;Wang, Jianhua;Chen, Lianzhong
通讯作者：
Chen, Lianzhong