14.3. Vertical Sky Component - Integrated Environmental …
Usually the ‘given vertical plane’ is the outside of a window wall. The VSC does not include reflected light, either from the ground or from the buildings. The maximum VSC possible for a completely unobstructed vertical window is approx. 40%.
Doc - Vertical Sky Component - deluminaelab.com
The maximum percentage value for a vertical window with a completely unobstructed view through 90° in every direction is about 39.6%. In order to maintain good levels of daylight the BRE guidance recommend that the VSC of a window should be 27% or greater.
Vertical Sky Component (VSC) Explained - Anstey Horne
What Exactly Is the Vertical Sky Component (VSC)? The VSC quantifies the ratio of visible sky to physical obstructions when viewed from a hemispherical sky dome. For example, lying down in an open field and looking straight up might give you a VSC of 100%.
VSC, Vertical Sky Component, DL-Light - deluminaelab.com
The Vertical Sky Component is an indicator used mainly in the UK and Hong-Kong to assess the penetration of natural sky light through windows at an early stage of the project design. It is often used in conjunction with APSH indicator for the sun.
Understanding the Vertical Sky Component (VSC): A Key Metric …
Aug 15, 2024 · However, when viewed from the centre of a vertical window in a building with no obstructions, the maximum VSC is nearly 40%—the building itself blocks about 60% of the sky dome from view.
Sky Component/Vertical Sky Component
The ratio of the illuminance at a point on a given plane within an interior due to the light received directly from a sky of assumed or known luminance distribution, to that on a horizontal plane due to an unobstructed hemisphere of this sky.
Daylight Sunlight Assessments: What is the Vertical Sky Component ...
Sep 24, 2024 · Figure 1:Vertical Sky Component diagram. As illustrated within the figure, the amount of sky observable from a window is much less than 50% in real-world settings due to the geometry and typical level of screening visible from a window.
(PDF) Analysis of vertical sky components under various CIE …
May 22, 2015 · This paper presents manual calculation procedures to predict sky and externally reflected components at the interior points under various obstructed CIE sky conditions.
Vertical Sky Component - Honeybee - Grasshopper Docs
The Vertical Sky Component (VSC) is described by the UK Building Research Establishment (BRE) as the ratio of the direct sky illuminance falling on the vertical wall at a reference point, to the simultaneous horizontal illuminance under an unobstructed sky [Littlefair, 1991].
Evaluation of the Vertical Sky Component without Obstructions …
Apr 29, 2020 · Knowledge of Vertical Sky Component (VSC) allows the calculation of daylighting availability for buildings at any cardinal orientation for energetic and visually efficient building and city design.