Development of Numerical Heat Transfer and the Structural Model to Design Slim and Translucent Vacuum Layer Type Insulation Panels to Retrofitting Insulation in Existing Buildings

Yang, Zhang; Katsura, Takao; Aihara, Masahiro; Nakamura, Makoto; Nagano, Katsunori

Development of Numerical Heat Transfer and the Structural Model to Design Slim and Translucent Vacuum Layer Type Insulation Panels to Retrofitting Insulation in Existing Buildings

Yang, Zhang; Katsura, Takao; Aihara, Masahiro et al.

Energies, 2017, 10(12), 2108

Permalink : https://hdl.handle.net/2115/68468

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アクセス権	open access
URI	https://hdl.handle.net/2115/68468
タイトル	Development of Numerical Heat Transfer and the Structural Model to Design Slim and Translucent Vacuum Layer Type Insulation Panels to Retrofitting Insulation in Existing Buildings
著者	Yang, Zhang ; Katsura, Takao ; Aihara, Masahiro ; Nakamura, Makoto ; Nagano, Katsunori
著者名 Yang, Zhang
著者名 Katsura, Takao
著者名 Aihara, Masahiro
著者名 Nakamura, Makoto
e-Rad_Researcher 80208032 著者名 Nagano, Katsunori
言語	英語
キーワード	vacuum insulation panels
	vacuum layer type
	slim and translucent retrofit insulation
	structural model
	heat transfer model
	finite element analysis
	guarded hot plate apparatus
発行日	2017-12
出版者	MDPI
収録物名	Energies
巻(号)	10(12)
ページ	2108
抄録	The authors develop slim and light-weight vacuum insulation panels (VIPs) by producing vacuum layers with spacers and plastic plates. The developed VIPs have the advantages of a low cost and easy installation, thus facilitating retrofitting insulation of existing buildings. In addition, one of the developed VIPs is slim and translucent so it can be easily used for windows in an internal installation. In this paper, the authors first propose a vacuum layer type slim translucent VIP and focus on a reasonable design method. Next, the authors introduce the design process in which the structural design is obtained with element mechanical analysis and a three-dimensional analysis is conducted for the VIP element. In the study, a heat transfer model is used to predict the insulation performance through finite element analysis (FEA). Subsequently, the authors perform an experiment to measure the thermal conductivity in a guarded hot plate apparatus to validate the performance prediction. Finally, case studies are performed to confirm how the different design conditions affect the insulation performance. The optimum design of the vacuum layer type slim and translucent VIP will have a sufficient structural strength to hold and maintain the vacuum layer. The thermal conductivity is approximately 0.007 W/(m.K), which can effectively improve the insulation performance in applications.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
権利情報	© 2018 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/).
PISSN	1996-1073
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/en10122108