TAS

TAS is an industry-leading building modelling and simulation tool

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Thermal modelling allowing designers to accurately predict energy consumption, CO2 emissions, operating costs and occupant comfort. Engineers can check their designs for compliance with Part L, LEED and ASHRAE standards. If the design changes, the TAS model can be updated using the Revit model, the Cymap data or both.

Fully dynamic plant modelling simulations can be performed using actual manufacturers plant with in built performance data, to see how the plant responds to the building simulation giving very accurate results. These are then used to analyse where the power and energy is being used so decisions can be made.

Tas is one of 4 C.I.E. approved calculation tools ( the others being daylight specialists) to undertake Climate Based Daylight Modelling (CBDM) which gives accurate results where daylighting calculation accuracy has a bearing on the artificial lighting design, its control, power consumption and energy efficiency.

The industry issue, you will experience, of reconstructing 3D geometry in thermal simulation packages has been resolved by the implementation of 2 key technologies unique to TAS.

The first of the key technologies is to fill and remove any gaps that occur when gbXML is written and the underlying geometry of the building model is simplified. Even if the 3D building is modelled perfectly in Architectural building modellers, when the gbXML geometry is written there will still be anomalies, that would otherwise need to be analysed and fixed by hand in other thermal modelling tools. TAS fixes these automatically, gives an audit trail of the fixes applied and visually on the model if required. This means there is no longer a need to remodel the building leveraging time and money, as opposed to haemorrhaging time and money remodelling the building where constant changes are usually having to be applied.

The second of the key technologies is unique to Tas with its ability to seamlessly merge changes as the source architectural model evolves. If you as the engineer has spent time changing the model , would you want evolved model changes effectively undoing and overwriting your previous efforts , wasting time and money?…you wouldn’t.

Tas allows the user to start their design and model the building and seamlessly merge the changes with the work already previously undertaken. Even if a simulation has been performed, any updates to the 3D model can be merged and the revised simulation undertaken quickly and effectively.

Combing these 2 key technologies with multi core enabling to allow quick simulation you have a very practical powerful tool to allow more investigative and iterative workflow to “squeeze” the building saving the client time and money

Ask yourself this, Why would you want to spend time re modelling a building (against the BIM level 2 ethos), fixing gaps, having this all undone with the next iteration of the architects model without being able to merge any changes?

Climate based daylight modelling originated in the lighting simulation community. Hourly diffuse and direct solar radiation climate data is used to produce daylight coefficients for patches of sky. Irradiance data is converted to illuminance using a luminous efficacy model. The daylight contribution to the space is then calculated hourly through the year for each sky patch.

EDSL’s Tas software has originated in the thermal simulation community. Our Tas software calculates the diffuse and direct solar distribution in spaces hourly through the year. We have developed a daylighting simulation engine, which is fully integrated with our thermal simulation engine. We are, therefore, able to calibrate the daylight contribution from the solar contribution in a space using luminous efficacy. Put simply, we convert the hourly solar income into hourly daylight income.

The following powerpoint illustrates the functionality of the combined thermal and daylight simulation model on a classroom.

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TAS

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