Building simulations
At a time when buildings are subject to ever-increasing demands for energy efficiency, comfort and sustainability, accurate simulation models play a key role in their design and operation.
Our work combines state-of-the-art calculation methods, international standards and practical experience to provide investors, designers and building operators with reliable data for making the right decisions.
Using cutting-edge software and methodologies, we can:
- Predict the behaviour of a building in various climatic and operational scenarios
- Optimise the design of technical systems
- Reduce operating costs and environmental footprint
- Increase user comfort
Advanced energy modeling for sustainable and efficient buildings.
Benefits
Building simulations enable informed decisions to be made before construction begins, saving costs, reducing risks, and increasing the value of the investment.
Lower operating costs thanks to accurate energy analysis
Minimizing investment risk through data-driven decisions
Higher property value thanks to optimised performance
Support for ESG strategy and certifications
Services
We optimise building performance even before construction — reducing costs, increasing comfort and ensuring compliance with international standards and certification systems (BREEAM, LEED, ASHRAE).
- Energy modeling for system sizing — Calculations for the optimal design of heating and cooling sources and determination of the sizes of transfer elements (radiators, fan coils, chilled ceilings, etc.) based on real climate data and operating scenarios. We minimise the risk of over- or under-dimensioning the system.
- Detailed HVAC energy modeling according to ASHRAE 90.1 — Comprehensive energy models according to the international standard ASHRAE 90.1 — ideal for certification and legislative assessments. They include a detailed operating profile, zone control and energy consumption optimisation under real conditions.
- Digital twin of an existing building — Creation of an accurate digital copy of a building with complete technical and operational parameters. The digital twin enables continuous monitoring, predictive maintenance and testing of modernisation measures without interfering with real-world operations.”
- We assess the global thermal comfort of indoor spaces according to ISO 7730, using the PPD (Predicted Percentage of Dissatisfied) and PMV (Predicted Mean Vote) indices.
- These calculations represent user satisfaction statistics based on the average thermal comfort in the space during the selected time period.
- We evaluate the combination of air temperature, humidity, flow rate and ambient radiation temperature, with the results helping to optimize the design and operating parameters of HVAC systems.
- Aspects of local thermal comfort — for example drafts, radiation asymmetry or floor temperature — are the subject of CFD simulations.
- Dynamic daylight simulations (sDA, ASE) — We assess daylight penetration into the interior using sDA (Spatial Daylight Autonomy) and ASE (Annual Sunlight Exposure) methods. Simulations help optimise the size and placement of glazed areas, shading and light openings to achieve the ideal balance between natural lighting, energy efficiency and visual comfort.
- Dynamic simulations of solar radiation on the building envelope — Analyses of the intensity of solar radiation on roofs and facades over the course of the year. The outputs are used to design photovoltaic systems, shading elements and to assess the risk of overheating of the building envelope.”
- We model façade temperatures, surface temperatures around the building, and evaluate the impact of the urban heat island effect.
- We simulate water consumption for vegetation irrigation, contaminant dispersion, and optimise the microclimate for public spaces to increase the thermal comfort of users.
- These outputs are key in the design of squares, parks, green roofs and other elements of the urban environment.
We optimise building performance even before construction — reducing costs, increasing comfort and ensuring compliance with international standards and certification systems (BREEAM, LEED, ASHRAE).
CFD simulations provide a detailed picture of local thermal comfort conditions and indoor and outdoor air flow dynamics. Unlike global calculations (Part 2), which express overall satisfaction statistics, CFD focuses on specific locations and situations where discomfort may arise.
The most common applications include:
- Wind study — assessment of wind speed and direction around buildings and in outdoor areas
- Simulations of double skin facades
- CO concentration in garages — optimisation of ventilation and ensuring compliance with health limits
- Smoke propagation — design of effective heat and fume extraction in case of fire
- Local thermal comfort — assessment of draughts, radiation asymmetry, floor temperature differences and elimination of unpleasant temperature gradients
Gallery
This gallery presents a selection of images from projects we have worked on. The visuals were generated by building simulations.
FAQ
An overview of answers to frequently asked questions about our company and the services we offer.
Building simulations allow you to accurately predict energy consumption, thermal comfort and other operating parameters even before the project is completed. They help to optimise the design of technical systems, reduce operating costs and increase user comfort.
Yes, we create accurate digital twins of existing buildings, which enable continuous monitoring and optimization of operations. These models are key to predictive maintenance and testing of modernisation measures without interfering with actual operations.
Yes, our simulations comply with international standards such as ASHRAE 90.1, ISO 7730 and other relevant standards. This ensures the high quality and accuracy of our outputs, which are accepted for certifications such as BREEAM, LEED and others.
Contact
Samuel Sůra
+421 911 969 333
sura@salvis.sk
Samuel is the founder and CEO of SALVIS
