daylight factor वाक्य
उदाहरण वाक्य
मोबाइल
- The LEED 2009 documentation is based upon the daylight factor calculation.
- The daylight factor calculation is based on uniform overcast skies.
- This can lead to higher predictions of the daylight factor than is correct.
- This equates to a sky factor ( similar to the daylight factor ) of 0.2 %.
- Artificial lighting takes into account the amount of daylight received in an internal space by using Daylight factor calculation.
- The amount of daylight received in an internal space can typically be analyzed by undertaking a daylight factor calculation.
- A study of daylight factors within a single storey building resulting from different perimeter glazing and rooflight designs and glass types.
- The amount of daylight received in an internal space can be analyzed by measuring illuminance on a grid or undertaking a daylight factor calculation.
- Architects and engineers use daylight factors in architecture and building design to assess the internal natural lighting levels as perceived on working planes or surfaces.
- To assess the effect of a poor or good daylight factor, one might compare the results for a given calculation against published design guidance.
- 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 ."
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