Results 271 to 280 of about 156,448 (285)

Analysis of daylight metrics of side-lit room in Canton, south China: A comparison between daylight autonomy and daylight factor

Energy and Buildings, 2017
Abstract To ensure sufficient daylight in rooms, daylight performance metrics are the basic references to guide building design or to benchmark a building against another in terms of daylighting in a room. Daylight factor (DF) is the most commonly accepted daylight performance metric, but it has limitations in evaluating the daylighting of a room ...
Yu Bian, Yuan Ma
openaire   +1 more source

Average daylight factor for clear sky conditions

Lighting Research and Technology, 1997
An average daylight factor is proposed for sunny climates on the basis of two assumptions. The first is that the illuminance on the external plane of a vertical window (as a result of direct skylig...
openaire   +1 more source

The daylight factor and actual illuminance ratios

Lighting Research & Technology, 1980
Measurements of daylight at hourly intervals were made during seven periods of several weeks each between May 1978 and July 1979. Illuminance was recorded externally, on horizontal and vertical surfaces, and internally, within model rooms. It was found that the ratio of internal to external illuminance varied considerably, even under heavily clouded ...
openaire   +1 more source

A Daylight Factor for Clear Sky Conditions

Architectural Science Review, 1999
This paper describes a method for estimating the daylight factor under clear sky conditions. The internal illuminance is divided into two components; light received directly form the window, as a diffuse source, and light reflected from the internal surfaces of the room.
openaire   +1 more source

Daylight Factor

2021
openaire   +1 more source

Note on daylight factor diagrams and transmission factors of glass

Journal of Scientific Instruments, 1937
The author draws attention to certain corrections and additional matter on the subjects dealt with in his earlier paper.
openaire   +1 more source

The computation of daylight factors in factory design

Journal of Scientific Instruments, 1940
The computation of daylight factors is becoming increasingly common in spite of its complexity. Simple protractors are described which facilitate such computations, and are suggested as being particularly useful in factory design.
openaire   +1 more source

Opinion: Climate-based daylight modelling or daylight factor?

Lighting Research & Technology, 2014
openaire   +1 more source

Daylight Factor

2010
openaire   +1 more source

Portable photoelectric daylight factor meter

Journal of Scientific Instruments, 1938
openaire   +1 more source