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Indoor environment testing for design phase



In pre-design phase the first step is to define the general requirements and both technical and economic performance targets for the solution including indoor climate quality, usage requirements, flexibility requirements and life cycle costs. Targets are matched with the optimal indoor climate application and suitable components, including room systems, controls and zone management.

Computer simulations for simulating indoor environment conditions

Halton laboratories offer computational fluid dynamics CFD simulation services for indoor air applications. Computer-based flow simulations are used to optimise room conditions, especially when experiments are difficult to set up. In addition, CFD simulation is often used to compare alternative solutions during the design or the pre-design phases.

CFD has been used to simulate several different cases ranging from detailed ventilation product simulation to whole room airflow simulation. It enables a complete analysis of indoor conditions including picture of an overall air distribution or local values.

Why to choose Halton CFD simulation service?
Halton CFD simulations can be validated by comparing them with laboratory measurements. Validation capabilities have been used also to develop realistic computational models of all indoor climate products; a feature that only a few rare service providers can guarantee. For simulations, Halton uses Ansys CFX, commercial state-of-the-art CFD -tool.

Real-scale indoor environment testing

Indoor climate testing services are used to ensure that the indoor climate conditions are in accordance with the product design and features. Tailored tests and mock-ups are recommended especially strongly for special rooms and other demanding situations where the loads and the ventilation system differ from standard applications.

Typically test are carried out for following cases:

  • Spaces with special loads and windows
  • Designs for demanding acoustic environments
  • Close procimity studies of displacement ventilation applications 

Halton’s test facilities allow test situations ranging from simplified tests to more detailed mock-ups. Multiple indoor environment parameters can be studied, including air temperatures, air velocities and acoustics, as well as product performance characterization.

Versatile test facilities are used to perform full-scale simulations in a variety of demanding environments, such as world-class concert halls, supermarkets, public buildings, offices and industrial premises.  

Success story: Office development, Paris

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In a major Paris office development project the aim was to develop an optimal cooling / heating / ventilation solution to be suitable for a building with unique architectural characteristics. In addition, the many open-plan office floors had higher than usual heat loads generated by high number of computers and screens.

High heat loads combined with a unique architecture demanded verification of the indoor environment design before the planning could proceed. Halton utilized computer simulations and real-scale indoor environment testing to find out an optimal solution for the client.

Halton design software  

Halton provides the advanced design tools, Halton HIT Design and Halton HELP, for product selection and performance simulation. Halton also supports CAD design with 2D and 3D product models.

> Halton design software


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