Validation of illuminance predictions from lighting simulation programs

• The BRE-IDMP validation dataset was used to test Radiance predictions.
• Comparison of predictions with measurements in full size offices under real sky conditions.
• Measured sky luminance patterns were used in the simulations.
• Radiance predictions proved to be capable of high accuracy (+-10%).
• The most rigorous validation of illuminance predictions under daylight conditions to date.
• Investigation of confounding factors present in validation studies.
• Parallax errors in sky simulator domes proved to be fundamental limiting factor for high accuracy work with scale models.

Daylight coefficients

• Formulation of a refined daylight coefficient approach using standard Radiance.
• Efficient computation of time-varying daylight illuminances based on hourly meteorological data.
• The daylight coefficient solution invariant to building orientation and locale - rapidly evaluate design scenarios for multiple orientations and climate locales.

Useful daylight illuminance

• A climate-based daylighting metric.

Illuminance Proxy - High Dynamic Range Imaging

• A HDR method to measure arbitrarily complex illumination fields under real-world conditions.

Spatio-temporal mapping of solar penetration in buildings

• Fast, image-based approach to generate spatial and temporal maps of direct solar irradiation in buildings.
• Precise, rapid evaluation of parametrically generated complex roof systems.

Irradiation mapping and solar access in dense urban environments

• Total annual irradiation is a measure of all the energy from the sun and sky that is incident on a surface over a period of a full year. It is a more realistic measure of solar access than those based on idealised conditions, e.g. CIE overcast sky.
• Image-based approach to predict total annual irradiation in complex urban environments (ICUE).
• Building applications include BIPV and solar-microclimate responsive facade design.
• General applications include evaluation of solar access for buildings and open, public spaces.

Driver exposure to particulates

• In-car measurements of coarse and ultrafine particulates to determine driver exposure.