%0 Journal Article %J Energy and Buildings %D 2006 %T Subject Response to Electrochromic Windows %A Robert D. Clear %A Vorapat Inkarojrit %A Eleanor S. Lee %K Electrochromic windows %K energy use %K Subjective response %K Venetian blind use %X

Forty-three subjects worked in a private office with switchable electrochromic windows, manually-operated Venetian blinds, and dimmable fluorescent lights. The electrochromic window had a visible transmittance range of approximately 3-60%. Analysis of subject responses and physical data collected during the work sessions showed that the electrochromic windows reduced the incidence of glare compared to working under a fixed transmittance (60%) condition. Subjects used the Venetian blinds less often and preferred the variable transmittance condition, but used slightly more electric lighting with it than they did when window transmittance was fixed.

%B Energy and Buildings %V 38 %P 758-779 %8 07/2006 %G eng %N 7 %1

Windows and Daylighting Group

%2 LBNL-57125 %& 758 %R 10.1016/j.enbuild.2006.03.011 %0 Report %D 2006 %T Summary results of visual comfort measurements at the electrochromic windows testbed %A Robert D. Clear %X

The study was performed at the Lawrence Berkeley National Laboratory (LBNL) windows testbed in Berkeley California. The location is 37.4°N latitude. The maximum solar altitude ranges from approximately 29° to 76°, with a yearly average of about 53°. The testbed rooms have their windows mounted due south. The azimuthal angle at sunrise varies from approximately 60° from due south in the winter to 120° in summer. The analysis was restricted to the period from 6:00-18:00 standard time. Sunrise ranges from 4:42 to 7:17 (solar time), so the sun was not visible during part of the winter study periods.

%C Berkeley %8 03/2006