daylight factor उदाहरण वाक्य
उदाहरण वाक्य
- Calculating daylight factors requires complex repetition of calculations and thus is generally undertaken using a complex software product such as ray tracing to perform all lighting calculations.
- In the UK this is likely to be CIBSE Lighting Guide 10 ( LG10-1999 ), which broadly bands average daylight factors into the following categories:
- The amount of daylight received into an indoor space or room is defined as a daylight factor, being the ratio between the measured internal and external light levels.
- This gives less flexibility in changing the daylight factor by using different wall colours than might be expected meaning changing SC is often the key to good daylight design.
- The design day for daylight factor calculations is based on the standard CIE overcast Sky for 21 September at 12 : 00pm, and where the " Ground Ambient " light level is 11921 Lux.
- The daylight factor can be improved by increasing SC ( for example placing a window so it " sees " more of the sky rather than adjacent buildings ), increasing ERC ( for example by painting surrounding buildings white ), increasing IRC ( for example by using light colours for room surfaces ).
- Daylight factor is the ratio of the illuminance at a point on a plane, generally the horizontal work plane, produced by the luminous flux received directly or indirectly at that point from a sky whose luminance distribution is known, to the illuminance on a horizontal plane produced by an unobstructed hemisphere of this same sky ."