OVERHEATING & DAYLIGHT ANALYSES
Smart investors are seeking ‘future-proofed’ buildings that are ready for warmer climates, with good access to daylight and low running costs.
This is where our dual overheating analysis and daylight studies come in. Overheating and daylight studies must be carried out simultaneously as increasing daylight penetration often increases overheating risks and vice versa.
OVER HEATING ANALYSIS
As buildings become more insulated and airtight, the risk of overheating increases. Our Overheating Analyses use 3D virtual building energy models (Dynamic Thermal Models) and the industry’s leading method (CIBSE TM59). These models can determine which occupied spaces pass the relevant comfort criteria and, where required, how the design can be enhanced to ensure all areas pass.
Certain local authorities have now made Dynamic Thermal Models and Overheating Analysis compulsory for all major residential developments following the Greater London Authority which states:
“It is the GLA’s expectation that dynamic thermal modelling is undertaken to demonstrate compliance with the London Plan Policy 5.9”. “It is expected that a dynamic thermal model of overheating risk will be undertaken to support the Energy Assessment” for planning applications.
Dynamic thermal models can be used to develop strategies such as natural ventilation, night-cooled thermal mass and solar control glazing, blinds and shading.
External solar shading devices can effectively reduce overheating risks and cooling demand. However, we place importance on balancing performance with costs and aesthetics. Our ‘option analyses’ improve performance and ensure compliance based on a design hierarchy which tests the simplest, most cost-effective solutions first.
The Monte-Carlo statistical approach to daylight modelling represent reality exactly. This means these types of models are incredibly accurate at predicting daylight or lighting levels. Comparing predicted performance to predefined daylight criteria allows the design to evolve rapidly.
The accuracy and simplicity of these models, combined with their ability to inform the design process, means that they are recommended for almost all projects.
Combined with parametric analysis, hundreds of options can be rapidly assessed such as: size, type and orientation of windows, the requirement for light-shelves as well as clerestory, monitors, sawtooth or conventional rooflights. Any form can be modelled including anidolic surfaces which provides interesting architectural forms and allow deep daylight penetration.