Experimental study on subcooled pool boiling of FC-72 on a flat plate in normal and microgravity

doi:10.1016/j.ijheatmasstransfer.2023.124556

	Experimental study on subcooled pool boiling of FC-72 on a flat plate in normal and microgravity
	Liu P(刘鹏); Wu K(吴克); Du WF(杜王芳); Li, HuiXiong ; Zhao JF(赵建福)
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2023-12-01
卷号	216 页码:124556
关键词	Pool boiling Microgravity Heat transfer SJ-10 satellite Single-phase convection Critical heat flux
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2023.124556
英文摘要	A series of experimental studies on the heat transfer characteristics of pool boiling were conducted aboard the Chinese satellite SJ-10 in April 2016. Ground comparative experiments under the same conditions were carried out using the same apparatus. FC-72 was used as the working fluid containing non-condensable gas. The total quasi-stable-state acceleration aboard satellite SJ-10 during its in-orbit flight is approximately 2 x 10-6 g0. The integrated microheater fabricated by the microelectromechanical system (MEMS) technique was used to investigate the boiling characteristics. The boiling surface of the integrated microheater is on top of a flat plate quartz glass wafer substrate 2 mm thick, heated by a serpentine Pt thin film (main heater) below the substrate. The effective area of the boiling surface in direct contact with FC-72 is 5.5 mm in diameter. Ten temperature sensors are located around the boiling surface center and uniformly distributed in the circumferential direction. The experimental results show that single-phase convection could still be maintained under lower Rayleigh number conditions, showing consistency with the predictions based on the available correlations. The generated bubble volume determines the boiling state. At high liquid subcooling, the bubbles formed after the liquid vaporizes are relatively small, and steam condensation at the bubble cap promotes the phase change efficiency, which maintains nucleate boiling in microgravity. When subcooling is low, bubbles are larger and cover most of the heating surface, nucleate boiling is difficult to maintain, and the boiling becomes transition boiling. High liquid subcooling improves the heat transfer efficiency, thereby contributing to maintaining the progress of nucleate boiling in microgravity. However, boiling is less affected by liquid subcooling on the ground than in microgravity. A comparison of pool boiling curves between microgravity and normal gravity experiments indicates that nucleate boiling curves under the same subcooling partially overlap, while the heat flux corresponding to the initiation of the nucleate state is lower than that on the ground. In microgravity, lower liquid subcooling and higher heating power will result in larger bubble volumes and easier complete coverage of the heating surface, resulting in an easier transition from nucleate boiling to film boiling.
分类号	一类
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
WOS记录号	WOS:001056153100001
资助机构	National Key Ramp ; D Program of China [2022YFF0503502] ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) [U1738105] ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences [XDA04020404, XDA0402020204]
其他责任者	Du, WF (corresponding author), Chinese Acad Sci, CAS Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92642]
专题	力学研究所_国家微重力实验室
作者单位	1.{Liu Peng, Wu Ke, Du Wang-Fang, Zhao Jian-Fu} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.{Li Hui-Xiong} Xi An Jiao Tong Univ State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China 3.{Liu Peng, Wu Ke, Du Wang-Fang, Zhao Jian-Fu} Chinese Acad Sci CAS Key Lab Micrograv Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Liu P,Wu K,Du WF,et al. Experimental study on subcooled pool boiling of FC-72 on a flat plate in normal and microgravity[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2023,216:124556.
APA	刘鹏,吴克,杜王芳,Li, HuiXiong,&赵建福.(2023).Experimental study on subcooled pool boiling of FC-72 on a flat plate in normal and microgravity.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,216,124556.
MLA	刘鹏,et al."Experimental study on subcooled pool boiling of FC-72 on a flat plate in normal and microgravity".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 216(2023):124556.