Thermal conductivity of powder silica hollow spheres

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	Thermal conductivity of powder silica hollow spheres
	Liao, Yuchao 1,2; Wu, Xiaofeng 1; Liu, Haidi 1; Chen, Yunfa1
刊名	THERMOCHIMICA ACTA
	2011-11-10
卷号	526 期号:1-2 页码:178-184
关键词	Numerical analysis Thermal conductivity Powder silica hollow spheres Finite element analysis
ISSN号	0040-6031
通讯作者	Chen, YF
英文摘要	The thermophysical property of hollow silica spheres was studied by the experimental test 3 omega method, theoretical calculation and finite element simulation. The experimental values of the thermal conductivity, less than 0.02 Wm(-1) K-1, indicated that the powder silica hollow spheres are indeed the high efficient heat-insulating materials. The influences of the particle size and packing density on the thermal conductivity were observed. Then the formula interpreting aerogels were used to calculate the thermal conductivity of hollow silica spheres. The calculated values were larger than the experimental ones. Moreover, ANSYS software was applied to develop a heat conduction model for this type materials based on their hollow structure features. The geometry of the materials was discrete and finite element analysis was performed. The simulated values were close to that of air and a little higher than the experimental and calculated ones. And the possible reasons causing such differences were proposed. (C) 2011 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Analytical ; Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	ORGANIC AEROGELS ; FINITE-ELEMENT ; HEAT-TRANSFER
收录类别	SCI
语种	英语
WOS记录号	WOS:000298274300026
公开日期	2013-10-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4337]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liao, Yuchao,Wu, Xiaofeng,Liu, Haidi,et al. Thermal conductivity of powder silica hollow spheres[J]. THERMOCHIMICA ACTA,2011,526(1-2):178-184.
APA	Liao, Yuchao,Wu, Xiaofeng,Liu, Haidi,&Chen, Yunfa.(2011).Thermal conductivity of powder silica hollow spheres.THERMOCHIMICA ACTA,526(1-2),178-184.
MLA	Liao, Yuchao,et al."Thermal conductivity of powder silica hollow spheres".THERMOCHIMICA ACTA 526.1-2(2011):178-184.