Application
Building simulation
A detailed building simulation was carried out for André Ramseyer AG during the planning phase of a new company building. The aim was to analyse and optimize the thermal behaviour, heating and cooling requirements and comfort under various operating strategies at an early stage.
Fast Facts
Reduction in thermal cooling energy by 2,925kWh (-70%)
challenges
How do we ensure high thermal comfort and energy efficiency right from the planning phase?
A company building with workshops, training rooms and open-plan offices places different demands on temperature control and indoor climate - especially with strongly fluctuating internal loads and extreme summer temperatures.
Areas that are not actively cooled, such as workshops, are particularly sensitive to high outside temperatures. At the same time, heavily occupied training rooms and office areas with high internal loads lead to increased cooling requirements.
Various influencing factors such as building orientation, solar radiation, internal loads and typical weather data had to be taken into account as early as the planning phase. In addition, the air volumes had to be controlled efficiently in accordance with SIA 382, even under extreme conditions, in order to avoid unnecessarily high cooling loads and energy consumption.
SOLUTIONS
Simulation as a decision-making basis for sustainable operating strategies
With the help of a dynamic building simulation, different variants of the building technology were investigated - including night-time cooling via the ventilation system and targeted air volume limitation at extreme outside temperatures.
The analysis clearly showed that night-time cooling enabled the number of hours above 28 °C in the workshops to be reduced from around 1,000 to just 36 hours. The optimized operating strategy also led to more even temperature control and lower cooling loads in actively cooled areas.
The combination of both measures lowers energy consumption, reduces peak loads and sustainably improves thermal comfort.
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