Test building, façade test stand and multifunctional laboratory

The Twin²Sim project consists of a building envelope test stand, test rooms and a multifunctional laboratory in a research building.

Twin2Sim: Multifunctional test stand

The project serves the holistic investigation of complex building envelopes and building services engineering within the framework of a multifunctional test stand for façades (short-term investigations of 2-6 months) and a test building, in which the previously characterised façade components can be evaluated in the long term (several years). The test building further serves the evaluation of building services engineering installations in interaction with space and users. After the measurement, simulation and modelling takes place and thus the further development on digital twins is possible. This helps to reduce future development costs by reducing physical prototypes. For only the second time in Austria, the facility allows the measurement of the sound insulation of components in a test stand in timber construction and, for the first time, also the measurement of the longitudinal sound conduction. This function is particularly significant for the development of lightweight (wooden) components, as there are no calculation options for such components and simulation is still exclusively of a research nature.

Simulation on the digital twin

Twin2Sim: Ansicht Südost

With the know-how of the FH Salzburg, components and systems are represented by suitable models using simulations. Further development steps can subsequently be modelled on these digital twins. This procedure does not replace standardised tests, but it saves them having to be carried out several times in the course of development.Twin²Sim is used in funded research projects and in contract research.

High-quality timber construction architecture

The project integrates scientific testing into high-quality timber construction architecture (passive house ready), which will enhance Campus Kuchl both functionally and architecturally. Workplace for additional 20 people is created, which corresponds to an increase of 30% at the site.

Fassadenprüfstand mit Prüfling

Integration into teaching

Integration into teaching and training takes place through the use of the facility as an opportunity for prototype construction with subsequent measurement based evaluation, as a demonstration object for construction, building and control technology and through research-led teaching.

Incubator for the economy

The facility sees itself as an incubator for R&D and business, especially for SMEs without own research facilities, and is available to companies on a non-discriminatory basis, e.g. in the context of cooperative research projects.

Exploded view of test stand construction

Very constant temperature conditions are required in the test stand in order to be able to assess the influence of the test specimens on the room. Therefore, all external surfaces are heated or cooled on two levels and the energy used for this is measured. In addition, temperature, humidity, heat flow, solar radiation, wind and, if required, other physical parameters are recorded in the exterior and interior spaces as well as on the components themselves.

Who is researching at Twin2Sim?

Smart Building
The Team initiated the project, created the basic concept and will use the project for experiments and tests on building envelopes, hydrogen and building technology. The research team will have its workplaces in the project and thus also provide research subjects, e.g. for studies on comfort.

Forest Products Technology & Timber Constructions
The team is responsible for tests on timber construction and airborne sound insulation.

Alpine Building Centre
The Alpine Builidng Centre handles the project funding, has carried out the planning of the scientific facilities and the test fields, and will use the project for experiments and tests on building envelopes and building services technology. The research team will have its workplaces in the project and thus also provide research subjects, e.g. for studies on comfort.

The project is funded by the province of Salzburg within the framework of WISS2025.

Facts Twin2Sim

Location: Campus Kuchl
Funding Body: Province of Salzburg

Project volume: € 2.2 million
Net floor space: approx. 400 m²
Project start: 09/2019
Start of construction: 04/2021
Completion of construction: 12/2021
Validation and calibration: 07/2022 (individual tests are already possible during the validation phase)

Current Progress at Construction Site at Kuchl Campus

Project Team Twin2Sim

  • Hartwig Reiter, Head of Department Infrastructure & Organisation, Commercial Project Manager
  • Michael Grobbauer, Head of Alpine Building Centre, Scientific Project Manager, Funding, Testing of Building Envelopes and Structures
  • Markus Leeb, Head of Research Smart Building, Deputy Scientific Project Manager, Funding, Testing Building Technology and Energy Systems
  • Lutz Dorsch, building physics, calculations, simulations
  • Matthias Gnigler, support planning building construction
  • Stefan Eder, support planning building construction
  • Daniel Heidenthaler, support planning building services, simulations
  • David Rinnerthaler, support measurement and control technology
  • Elisabeth Wieder, funding
  • Hermann Huber, planning support timber construction, sound insulation tests
  • Monika Tropper-Grinschgl, planning support timber construction, sound insulation tests

The following companies have granted donations in kind or discount on products:

Belimo. Innovative applications for more comfort, energy efficiency and safety. As the world market leader, Belimo develops innovative solutions for the regulation and control of heating, ventilation and air conditioning systems. Actuators, valves and sensors are our core business. Our consistent focus on market and customer needs makes us a partner that offers its customers unique added value. Belimo's "small" products have a big impact on comfort, energy efficiency, safety, installation and maintenance. In short: Small devices, big impact.

Getzner Werkstoffe, based in Vorarlberg, has been producing solutions for sound and vibration protection since 1969. Shocks from the railway sector, vibrations from industrial plants or impact and airborne noise or flank transmission in wooden buildings are no longer a problem thanks to Getzner's continuously developed products. Together with research institutions and development partners worldwide, we are constantly working towards a quieter future and a better quality of life.

Hoval. The Hoval brand is one of the leading international companies for heating and indoor climate solutions. With more than 75 years of experience and a family-like team culture, Hoval succeeds time and again in inspiring with extraordinary solutions and technically superior developments. This leadership role obliges the company to take responsibility for energy and the environment, which it meets with an intelligent combination of different heating technologies and individual indoor climate solutions.

Wilo. The Wilo Group is one of the world's leading premium suppliers of pumps and pump systems for building services, water management and industry. With smart solutions, the Wilo Group is on its way to becoming the digital pioneer of the industry. The company is backed by more than 8,000 employees. Wilo Pumpen Österreich GmbH, a 100% subsidiary of the traditional Dortmund-based company, has been operating successfully in the Austrian sales region for over 40 years.

Firmenlogo Egger

Egger. The family-owned company, which has been in existence since 1961, employs around 10,100 people. They manufacture a comprehensive product range of wood-based materials (chipboard, OSB and MDF boards) as well as sawn timber at 20 locations worldwide. EGGER has customers worldwide in the furniture industry, the wood and flooring trade and in DIY stores. EGGER products can be found in countless areas of private and public life: in kitchens, bathrooms, offices, living rooms and bedrooms. EGGER sees itself as a full-range supplier for furniture and interior fittings, for structural timber engineering and for wood-based flooring.

Rigips. RIGIPS has been producing gypsum panels in Austria since 1971. RIGIPS produces and distributes gypsum boards, gypsum fibre boards and a wide range of gypsum powder products for fillers and jointing compounds. Rigips combines these gypsum products with high-quality components to create complete systems that are tested according to all building physics criteria. The plant in Bad Aussee is one of the most modern and energy-efficient production facilities in Europe, and the site in Puchberg is one of three competence centres for powder products.

Logo der Firma Ursa

URSA is one of the leading European manufacturers of mineral wool and extruded polystyrene (XPS), two complementary insulation materials that help to insulate buildings thermally and acoustically. URSA supplies quality products from a single source for all application segments around thermal, acoustic and fire protection, energy efficiency in buildings and forward-looking sustainability. With 13 production sites and around 40 sales locations across Europe, URSA has a broad commercial presence.

Theurl. In our family business, 390 employees at three locations in Tyrol and Carinthia develop high-quality and sustainable solid wood products for modern timber construction. With over 25 different occupational groups, we span across the various company divisions. Whether in the office, in production or technology, for IT specialists, metal technicians or sales staff, at THEURL the focus is on working as a team.

TROX is the world market leader in the development, manufacture and sale of components, devices and systems for the ventilation and air conditioning of rooms. With 33 subsidiaries in 29 countries on five continents, 19 production facilities and additional importers and representatives, the company is present in over 70 countries. Currently, the TROX GROUP generates a turnover of approx. 515 million euros with around 4,400 employees worldwide.
TROX Austria acts as a hub for all business in the CEE region and is represented not only in Austria but also in Hungary, the Czech Republic, Slovakia, Croatia, Serbia, Bulgaria and Romania; as well as in Slovenia through successful and reliable partners.

Leviat brings together the expertise, capabilities and resources of CRH Construction Accessories into a single global organisation. Leviat is a world leader in fastening, fixing, lifting and anchoring technology for the construction industry. The trusted product brands, including Ancon and HALFEN, are known for high performance, quality and reliability. Our engineered products and innovative construction solutions are used in a wide range of sectors.

Wolf Klima- und Heiztechnik GmbH. As one of the leading service-oriented suppliers of heating and air conditioning systems, we don't just sell air conditioners, boilers, solar systems or heat pumps. We deal with the most elementary human needs every day: Heat, water and air. And because we spend up to ninety percent of our lives indoors, the indoor climate is of paramount importance for our well-being.

Fronius. 24 hours of sun. Fronius was founded in 1945, today has 28 subsidiaries on four continents and is still an owner-managed company.
"Solar Energy" has been involved with innovative solutions for photovoltaics since 1992. As a solar pioneer, Fronius makes an important contribution to the energy transition. The goal is a future in which 100 percent of the world's energy needs are met by renewable sources. Fronius offers a wide range of products to make this vision a reality. These include inverters, storage systems and complete system solutions.

KIOTO SOLAR. Photovoltaics from Austria. KIOTO SOLAR is one of Europe's leading system suppliers in the field of photovoltaics and solar thermal energy. The company employs around 180 people and has a production capacity of 150 MW of photovoltaic modules. KIOTO SOLAR relies on fully automated production certified to the highest European standards. In addition to the standard repertoire of glass-foil modules, KIOTO SOLAR also offers double-glass modules for greenhouses, facades, overhead installations, carports and many other areas of application.

Mounting Systems GmbH. Mounting Systems GmbH is one of the world's largest producers of mounting systems for photovoltaic plants. With over 20 years of know-how in the market, the company is one of the most experienced in this field.Mounting Systems GmbH is based in Rangsdorf near Berlin and was founded in 1993. In September 2008, the company started operating as an independent company and since then the products have been sold independently on the market. Especially for high snow loads, which we definitely find in Austria, the substructure from Mounting Systems offers an ideal and safe way of PV mounting.

SIBLIK SmartHome - Living the way it suits me. What is KNX? Do I need it in my house? Does photovoltaics pay off at all? Heat pumps for the sake of the environment? Shading is not just blinds? Fresh air without open windows? When it comes to building a house, there are suddenly more questions than with children in the "why" phase. And rightly so! Compromises are a thing of the past. SIBLIK SmartHome helps you plan and advises you optimally on the realisation of your future-proof home. Save yourself time, money and hassle. SIBLIK SmartHome is your partner for perfect advice. Well-known domestic and foreign manufacturers from the electrical and home technology sector are closely associated with SIBLIK and have been represented exclusively in Austria for decades. Even if the name SIBLIK Smart Home is still so new that it shines, we draw on 80 years of experience. You have questions, we have the answers. Find out what comfort today's technology can offer you. In short: Perfect advice? It's possible!

Project Management and Planners

  • Project Controlling and and Building Control: SABAG, Salzburg
  • ArchitectureLP architektur ZT GmbH, Altenmarkt i.Pg.
  • Structural Engineering: Lackner I Egger ZT GmbH, Villach
  • Building Services Engineering: TB Dick+Harner GmbH, Salzburg
  • Electrical Engineering: TB Herbst GmbH, Salzburg
  • Measurement and Control Enginieering: NOVIAS GmbH, Haag
  • Sound Protection of Test Stand: ACOM Research, Thomasberg
  • Mechanical Engineering: ENRAG GmbH, Attnang-Puchheim
  • Cultural Technology: DI Anselmi ZT GmbH, Wals-Siezenheim
  • Fire Protection Engineering: Ingenieurbüro Eichinger Gerhard, Kuchl
  • Building Physics Engineering: Baumanagement Höllbacher, Salzburg

Construction Companies

  • Building Construction: Heinrich Baugesellschaft m.b.H. , Lend
  • Timber Construction: INNOVAHOLZ GmbH , Niedernfritz
  • Electrical Installation: Elektro Ebner GmbH , Hallein
  • Heating, Sanitary Installations, Ventilation & Air Conditioning: Hasenauer Installations GesmbH , Eugendorf
  • Measurement and Control Services: Regel- und Steuerungssystem AT GmbH, Brunn am Gebirge
  • Roof & Tinsmith Construction: HSG- Schattauer GmbH & CoKG , Golling
  • Raised Floor Construction: DBA Montagebau Ges.m.b.H. , Wien
  • Windows, Exterior Doors & Sunscreens: Reiter Bau und Fenster GmbH , Koppl
  • Metal Work: Gruber-Hofer Metalltechnik GmbH, Altenmarkt i.Pg
  • Tiler: Andreas Ebner Hafner- und Fliesenlegermeister GmbH, Elsbethen
  • Interior Doors: Prehal Möbel GmbH, Radstadt


Do you have any questions or would you like to become a Twin2Sim supporter?
Then contact project manager FH-Prof. DI Dr. Michael Grobbauer.

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