Project Partners

Research Institutes

For further information please contact:
Dr. Wim van Helden
Feldgasse 19, A-8200 Gleisdorf
Mobile:  +31 6 2014 3224


AEE INTEC was founded in 1988 as an independent research association and is one of the leading European institutes for applied research in the fields of solar thermal energy, low-energy and zero energy buildings as well as energy efficiency in industrial processes.

The core activities cover the fields of energy efficiency and efficient use of resources as well as the development of technologies and strategies that enable the quick and widespread use of solar technology, as a basis for an ecologically compatible supply of energy in the future. Within these scopes the contribution of AEE INTEC ranges from developing prototypes to constructing pilot plants as well as planning, consulting, providing technical knowledge and supervising numerous theses.

Main Fields of Activity
  • Thermal Energy Systems And Hybrid Systems
    Solar thermal systems and hybrid systems
    Communal energy systems
    Storage Technologies
  • Sustainable Buildings
    Energy efficient buildings
    Dynamic building simulation
    Monitoring and analysis of buildings and building systems
  • Industrial processes and energy systems
    Development of energy efficient processes
    Storage concepts
    Integration of solar thermal technologies in industrial processes
  • Biological sewage purification systems
Over the past 25 years AEE INTEC has considerably contributed to the development of solar technologies and system technologies in the afore-mentioned fields within the scope of national, European and international R&D projects. The clients of these projects are the European Commission, UNIDO, the Austrian Research Promotion Agency (FFG), various Federal Ministries of Austria as well as numerous industrial companies.

Within the COMTES project AEE INTEC does research in development line A ( solid sorption) as a leading party. A prototype of solid sorption storage was built and components were optimized. In a next step a system with two storages and vacuum flat plate collectors was installed at the lab of AEE INTEC. Simultaneously simulations and theoretical work is carried out.

Dr. Wim van Helden is project coordinator of the COMTES project.

For further information please contact:
Simon Furbo
Technical University of Denmark
Department of Civil Engineering
Brovej, Building 118
Denmark – 2800 Kgs. Lyngby
Phone:  +45 45251857


The objective for DTU is to be among the five leading technical universities in Europe; and our ambition is to attract the best researchers and research students from both Denmark and abroad, and maintain DTU as an attractive collaboration partner for other leading research environments worldwide.

DTU promotes promising fields of research within the technical and the natural sciences, especially based on usefulness to society, relevance to business, and sustainability. Further, DTU systematically develops its experimental facilities as a parameter in international competition.

To ensure that research at DTU is conducted at a leading international level, we continuously use internationally recognized measurements of publications and citations to measure our research performance against the world elite among other technical universities offering natural science.

In this way, the University guarantees the quality of its contribution to the international competitiveness of the Danish business community, and Denmark’s overall societal ambitions of being a leading high-technological society with a high level of welfare.

Department of Civil Engineering – DTU Byg

Department of Civil Engineering – DTU Byg is a university department within the Civil Engineering area. The mission of the department is education, research, research-based public sector consultancy and innovation. The department contributes to the establishment of social and commercial values through the development of research-based constructional knowledge. At the Department of Civil Engineering, research in the field of Solar Energy is carried out. Furthermore the Department of Civil Engineering offers education in the solar heating field.

Within the project COMTES Simon Furbo is leading researcher of development line C (supercooling phase change materials).

For further information please contact:
Robert Weber
Abt. Urbane Energiesysteme
Überlandstrasse 129
8600 Dübendorf
Phone:  +45 45251857


In the surrounding of ETH Empa is an interdisciplinary working research institute with focus on material sciences and technology development. As a bridge between academic research and application Empa develops solutions for main challenges in industry and society.

Department of Urban Energy Systems

The Department of Urban Energy Systems wants to substantially contribute to promoting renewable energies. Research with partners at universities and in industry as well as demonstration systems help to reach this aim. The department examines decentralized energy supply systems on building level as well as for quarters and cities. Analyses of systems based on simulations help to develop criteria and recommendations for design, dimensioning and operation of these systems.

A fundamental issue in using renewable energy technologies is storing the energy. Therefore storing concepts are examined, built up and optimized, especially for seasonal heat storage and hybrid systems.

Main research topics are:
  • Grids and systems
    Urban energy systems
    System optimization
    Quarter simulations
  • Buildings
    Energy optimization
    Building services engineering
    Renewable energies
  • Storage
    Seasonal heat storage
    Combination of storage technologies

Within the project COMTES Empa is responsible for line B (liquid sorption).

For further information please contact:
Dipl.-Ing. Dr.mont. Hermann Schranzhofer
Inffeldgasse 25B, A-8010 Graz
Phone:  +43 (316) 873 – 7314


For more than 200 years Graz University of Technology has been an important university in the international research and education network of engineering and science. TU Graz is both rich in tradition and future-oriented, with a claim to excellence. The university renders top performances in its five areas of excellence – the „Fields of Expertise“, and boasts intensive collaboration with other national and international research and educational establishments and with business and industry worldwide.

Graz University of Technology has seven faculties with over 100 institutes and just under 2 400 members of staff. 12500 students from nearly 80 countries study at Graz University of Technology. Based on scientific bachelor’s programmes, TU Graz concentrates on research oriented master’s programmes, increasingly offered in English, and PhD programmes. Graz University of Technology produces top performers and managers much in demand and contributes to the sustainable development of society, economy and environment in a responsible way.

Institute of Thermal Engineering (IWT)

About 40 people are currently employed at the Institute of Thermal Engineering (IWT) of the Graz University of Technology. IWT is active in teaching and research in the following fields: thermal engineering, CFD simulation, heating, ventilation and air conditioning technology, power plant technology and gas purification, fuel cell technology, thermodynamic process simulation, biomass applications, combustion and gasification technologies, heat pump technology, building technology, solar energy use, solar construction, district heating and waste heat utilization.

The Institute of Thermal Engineering at Graz University of Technology is involved in all major parts of the project concerning Development Line C. The main activities are the characterization of the PCM material, the development and experimental validation of simulation models, and dynamic system simulations to assess the performance of the storage in a system. Furthermore TU Graz has taken the lead of WP1 “Boundary conditions and system definition”. For the last project year TU Graz also takes over tasks from Development Line B preparing a simulation model for the storage and setting up a first system simulation.

For further information please contact:
Dr. Paul Gantenbein
SPF Institute for Solar Technologies
Oberseestrasse 10
CH-8640 Rapperswil
Phone:  +41 (0)55 222 4821


SPF has provided testing and R&D services since 1981 and with support from the Swiss Federal Office of Energy (SFOE). SPF strives to improve the quality and performance of solar thermal technologies. The team, comprising 25 scientists, engineers, technicians, trainees and students, offers a comprehensive range of professional and product development services.

Services by SPF include:

Testing: SPF is an accredited test centre (STS 301), testing collectors, components and systems for compliance with international norms. SPF issues various national and European quality marks (such as the SPF Quality Label, Solar Keymark, Blauer Engel, DIN-tested).

  • R&D: SPF provides support in the evaluation and development of materials, components and systems for solar heating as well as cooling and develops customized software.
  • Consulting: SPF provides consulting for system and component manufacturers, the building industry, energy planners, public authorities and private individuals.
  • Education and Training: SPF is involved in the education and training of engineering students, installation companies, trainees and apprentices.
  • Publicity work: SPF maintains one of the most frequently visited websites in the world for solar energy research (with its website presented in five languages).

In COMTES HSR-SPF does experimental and theoretical work in the design of thermal energy storage components of the whole system (development line B – liquid sorption). The focus is on the design of the system and the design and setup of the heat and mass transfer zones – the power units – of the storage system. SPF is planning and doing measurements in the sorption process experiments and does analysis of the results.

HSR-SPF has a unique position to carry out these tasks. The expertise and extensive experience in mid temperature solar thermal related processes and its comprehensive specialized infrastructure and its elaborate measuring technologies enables SPF to flexibly and accurately detect all relevant thermal and hydrodynamic properties. Its experience in analysis is based on a wide range of methods, to design innovative approaches to product development. Methods include: Particle Image Velocimetry, Laser Induced Fluorescence (LIF), Finite Element Method (FEM), and Computational Fluid Dynamics (CFD). It also has experience with providing industrial companies with consultancy services and with support on the development and optimization of systems and components.

The physicists Dr. Paul Gantenbein and Dr. Elimar Frank as well as the Natural Scientist Dr. Michel Haller do research work in designing storage components – like chemical reaction zones.

For further information please contact:
Dr.-Ing. Henner Kerskes
Institute of Thermodynamics and Thermal Engineering (ITW)
Pfaffenwaldring 6
Germany – 70550 Stuttgart
Phone:  +49 (0)711 685-63534


The Institute of Thermodynamics and Thermal Engineering (ITW) at the University of Stuttgart has been working in the field of thermal solar energy since the early 1970s. In 1993 the Research and Testing Centre for Thermal Solar Systems (TZS) was established.

Meanwhile, TZS is the largest testing centre for solar thermal components and systems in Europe. TZS has, hence, unique and well established experience in testing the full spectrum of solar thermal products as well as in conducting research and development projects with partners from research organisations and industry.

Within the COMTES project the Institute of Thermodynamics and Thermal Engineering works in development line A (solid sorption). The institute is leader of work-package 3 and conducts lab-scale investigations on closed adsorption systems. Furthermore numerical simulations with TRNSYS and simulations of heat and mass transfer under closed adsorption conditions are performed. The development of system control including an interface to connect numerical simulation and experimental testing for hardware in the loop application is another focus of the work carried out.

For further information please contact:
Dr. rer. nat. Jochen Jänchen
Technische Hochschule Wildau
Hochschulring 1
Germany – 15745 Wildau
Phone:  +49 (0) 3375 / 508 – 300


The University of Applied Sciences Wildau – Technische Hochschule Wildau (TH Wildau) – is the largest University of Applied Sciences in the Land Brandenburg. It is situated near the German Capital Berlin. It was established in 1991 and attracts today about 4,100 students, amongst them are more than 800 students from outside Germany. UASW offers 23 direct degree programs and 6 distance courses in two faculties. About 75 professors and associated professors teach and conduct research. One of its characteristics is a modern and future-oriented spectrum of courses in the fields of engineering including improved energy technologies, natural science as well as business administration. The UAS Wildau is amongst the few Universities that offers courses in Logistics and Telematics. Moreover, TH Wildau is the only University of Applied Sciences in Germany that offers a degree in bioinformatics / biosystems technology. The partner network of UASW includes partners of industry, economy as well as research centres and education. Currently, the TH Wildau maintains relations with 144 Higher Education Institutes in 58 countries. UASW has successfully participated in European projects funded by FP7, INTERREG or the Lifelong Learning Programme.

The main tasks of the UAS Wildau in the COMTES project are contributions to the selection and characterization of the adsorption material such as:

  • analysis of characteristic data of adsorption materials available on the market and search for new storage materials,
  • measurements of material characteristics such as adsorption and desorption properties, evaluation of thermodynamic data as well as the sorption kinetics
  • cycle tests and hydrothermal stability
  • choice of materials for reactor simulations, laboratory tests and the storage prototype


For further information please contact:
Ian Hughes
Kingspan Environmental Ltd
180 Gilford Road, Portadown
Northern Ireland BT63 5LF
Phone:  +44 (0) 28 3836 4400


For almost 60 years, Kingspan has been creating solutions for domestic and large-scale projects in sustainable energy. Whether you’re looking for renewable home heating solutions, water management systems or integrated monitoring, Kingspan Environmental can help you.

Kingspan Environmental Ltd is one of the industry partners within the COMTES project.


For further information please contact:
Henry Yndgaard Sørensen
Senior Project Manager, BSc. E.
Nilanvej 2
Denmark – 8722 Hedensted
Phone:  +45 76 75 25 00


Nilan A/S develops and manufactures premium-quality, energy-saving ventilation and heat pump solutions that are beneficial to the environment and provide a healthy indoor climate and low-level energy consumption.

Since the company was founded in Denmark in 1974, Nilan A/S’s activities have spread steadily to international markets. Today, Nilan A/S is represented across most of Europe. Nilan A/S not only ensures a healthy indoor climate, but also preserves a healthy environment. The declared aim is to play a part in actively combating climate change.

Nilan A/S has always maintained a sharp focus on being at the cutting edge of the technological development in order to produce some of the market’s most efficient energy-saving ventilation systems and heat pumps.

Nilan A/S’s initial steps were made in an endeavour to meet a need emerging from developments in the construction sector during the oil crisis. The crisis meant that people started to insulate buildings in order to save energy. This in turn meant that there was a need for solutions that would provide healthy indoor climate in these airtight buildings – a need Nilan A/S was able to meet.

As Nilan A/S is working with ventilation and house heating, and as such the ability to store heat-energy, Nilan A/S sees great possibilities in the COMTES project. Within the COMTES project, Nilan A/S is a part of line C, the work on supercooling phase change materials technology. NILAN A/S has produced all modules used for testing and developing the final modules used for the test house at DTU in Copenhagen. Nilan A/S also predicted the expected cost for future bigger modules.

For further information please contact:
Thomas Badenhop
Vaillant Germany GmbH & Co. KG
Berghauser Str. 40
42859 – Remscheid


Vaillant is one of the world’s leading companies in the field of heating systems. With its headquarter located in Remscheid, Vaillant counts about 12000 employees worldwide. Vaillant offers energy efficient and resource efficient systems for heating, cooling and domestic hot water preparation – mainly based on renewable energies. These systems provide highest comfort and clients can count on service for the product’s whole life cycle.

More than 600 employees work in the field of R&D. The researchers develop ideas for future sustainable energy systems, for example combination of fossil and renewable energy sources or CHP-systems. Vaillant Group holds more than 3000 patents, with an increase of around 50 each year.

Vaillant is one of the industry partners within the COMTES project.