Proposal of the Methodology to Predict Convection Heat Transfer by Insulating Gases in Double-Glazed Panes
Sanghoon Baek1, Sangchul Kim2

1Sanghoon Baek, Department of Industry Academic Cooperation Foundation, Han Kyong National University,  Jungang-Ro, Anseong-Si, Gyeonggi-Do,  South Korea, East Asia.

2Sangchul Kim, School of Architecture, Han Kyong National University, Jungang-Ro, Anseong-Si, Gyeonggi-Do, South Korea, East Asia. 

Manuscript received on 10 June 2019 | Revised Manuscript received on 17 June 2019 | Manuscript Published on 22 June 2019 | PP: 681-687 | Volume-8 Issue-8S2 June 2019 | Retrieval Number: H11140688S219/19©BEIESP

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Abstract: Helium, Argon, krypton, and Xenon are the representative insulating gases which be used for window systems, and convective heat transfer by the gases is one of the important factors to decide the heat performance of the entire window system. Window ver. 7.4 provided by Lawrence Berkeley National Laboratory U.S. (LBNL), which is the window professional research organization, was used in order to calculate the insulating performance of the double-glazed pane with the inserted noble gas and heat transfer by convection. This program can calculate heat transfer by conduction, convection, and radiation occurring in an indoor and outdoor surface temperature of the double-glazed pane and gas layer. It is necessary to examine convection heat transfer by an insulating gas to improve the insulating performance of the entire window system. This study aims to propose a methodology to predict convection heat transfer by insulating gases in double-glazed panes through a heat transfer theory and a computer simulation program. As the results, the insulating gases that can be utilized for a double-glazed pane are the noble gases, Helium, Neon, Argon, Krypton, Xenon, and each gas has a different convection heat transfer. In summer and winter conditions, the convection heat transfer of xenon is lowest, followed by Krypton, Argon, air, Neon, and Helium. The research shows that it is necessary to use insulating gases which have low convection heat transfer to make high-insulating window systems.

Keywords: Convection Heat Transfer, Double-Glazed Pane, Insulating Gas, U-value, Window System.
Scope of the Article: Systems and Software Engineering