Visual quality assessment of electrochromic and conventional glazings

Moeck, Martin; Lee, Eleanor S.; Rubín, M.; Sullivan, R.; Selkowitz, S.E.

doi:10.1016/s0927-0248(98)00066-x

Cited by 26 publications

(14 citation statements)

References 1 publication

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“…The benefit of a very low visible transmittance (~0.01) in the colored state, T v-c , has been argued for the following reasons: a) visual comfort may be improved [33], and b) the added cost for shades (for both privacy and direct sun control) may be avoided. A very low T v-c may indeed be advantageous in that it broadens the applicability of electrochromics and decreases the percentage of time that discomfort glare due to window brightness is experienced.…”

Section: Fully-colored Transmission (T V-c )mentioning

confidence: 99%

Application issues for large-area electrochromic windows in commercial buildings

Lee

DiBartolomeo

2002

Solar Energy Materials and Solar Cells

154

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Section: Fully-colored Transmission (T V-c )mentioning

confidence: 99%

Application issues for large-area electrochromic windows in commercial buildings

Lee

DiBartolomeo

2002

Solar Energy Materials and Solar Cells

154

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“…The electrochromic windows we tested have a visible transmittance range which is limited to approximately 3% to 60%. Even 3% transmittance may not be low enough to control glare and direct sun, while higher transmittances are desirable for daylight harvesting and view under lower light conditions [1,2]. The windows we tested are fairly small in size (approximately 0.9 meters on the long side), change color as their transmittance changes, and take several minutes to change their transmittance over their full range.…”

Section: Introductionmentioning

confidence: 99%

Subject responses to electrochromic windows

Clear

Inkarojrit

Lee

2006

Energy and Buildings

121

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Forty-three subjects worked in a private office with switchable electrochromic windows, manuallyoperated 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.

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“…Lower values (5:1  20:1) are required to control visual discomfort associated with diffuse skylight or cloud brightness or when 15 the glazing is integrated with additional shades (overhangs, venetian blinds, etc.) [25].…”

Section: Optical Transmittance Coefficientsmentioning

confidence: 99%