Open AccessIn situ U g-value measurement on three different glazing types
Author(s) -
Franz Paschke,
Nadja Bishara,
Isabell Schulz,
Cenk Kocer,
Jörg J. Schneider,
A. A. Maier
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2069/1/012134
Subject(s) - glazing , environmental science , consistency (knowledge bases) , opacity , heat flow , thermal , materials science , mathematics , composite material , meteorology , optics , geography , physics , geometry
This study presents in situ monitoring data of three different glazing systems over a period of one year. An insulated glass unit (IGU), a Vacuum Insulated Glass hybrid unit (VIG-hybrid) and an opaque architectural insulation module (AIM) were monitored under the equivalent environmental condition in this study. Different issues were observed and analyzed. It was found that the U g -value cited by the manufacturers agrees with the U g -values derived from the measured data, to within less than 5 % for the IGU and the VIG-hybrid. The consistency of the U g -value of each glazing types one year after the start of monitoring was validated for similar environmental conditions. Depending on the magnitude of the resistance to heat flow, an increasing U g -value was observed for a higher temperature difference between the inside and outside environments. The effect is much more significant for the glazing type with the largest U g -value (IGU) and less significant for the glazing types with a high thermal resistance (VIG-hybrid, AIM).