Measurement of Single and Double Glazing Thermal Performance under Realistic Conditions Using The Mobile Window Thermal Test (MoWITT) Facility

Date Published
03/1987
Publication Type
Conference Paper
Authors
LBL Report Number
LBL-22149
Abstract

The thermal performance of single glazing, clear double glazing, and double glazing with a low-emissivity coating was measured in both south-facing and north-facing orientations under realistic field conditions using the new MoWiTT field test facility. The time-dependent net heat flow through each fenestration was found to be consistent with the predictions of the standard simplified heat transfer model, provided that an angle-dependent shading coefficient is used and diffuse solar gain is included in the calculation. Summer-condition average U-values were derived for each glazing type and were found to agree with the expected values for both types of double glazing. The measured U-value for single glazing was lower than predicted.

Conference Name
1987 ASME Solar Energy Division Conference
Year of Publication
1986
Conference Location
Honolulu, HI
Call Number
LBL-22149
Custom 1
<p>Windows and Daylighting Group</p>
Organizations
Research Areas
File(s)
Download citation