期刊
SOLAR ENERGY
卷 84, 期 12, 页码 2132-2139出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2010.09.002
关键词
Triple vacuum glazing (TVG); Double vacuum glazing; Thermal performance; Finite volume model; Analytic model
资金
- Department of Communications, Marine and Natural Resources, Dublin, Ireland
- Royal Academy of Engineering
The simulated triple vacuum glazing (TVG) consists of three 4 mm thick glass panes with two vacuum gaps, with each internal glass surface coated with a low-emittance coating with an emittance of 0 03 The two vacuum gaps are sealed by an indium based sealant and separated by a stainless steel pillar array with a height of 0 12 mm and a pillar diameter of 0 3 mm spaced at 25 mm The thermal transmission at the centre-of-glazing area of the TVG was predicted to be 0 26 W m(-2) K-1 The simulation results show that although the thermal conductivity of solder glass (1 W m(-1) K-1) and indium (83 7 W m(-1) K-1) are very different, the difference in thermal transmission of TVGs resulting from the use of an indium and a solder glass edge seal was 0 01 W m(-2) K-1 This is because the edge seal is so thin (0 12 mm), consequently there is a negligible temperature drop across it irrespective of the material that the seal is made from relative to the total temperature difference across the glazing The results also show that there is a relatively large increase in the overall thermal conductance of glazings without a frame when the width of the indium edge seal is increased Increasing the rebate depth in a solid wood frame decreased the heat transmission of the TVG The overall heat transmission of the simulated 0 5 m by 0 5 m TVG was 32 6% greater than that of the 1 m by 1 m TVG, since heat conduction through the edge seal of the small glazing has a larger contribution to the total glazing heat transfer than that of the larger glazing system (C) 2010 Elsevier Ltd All rights reserved
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据