HYBUILD journal paper released : Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models

Hybrid sorption-compression systems are gaining interest for heating/cooling/ refrigeration purposes in different applications, since they allow exploiting the benefits of both technologies and a better utilization of renewable sources. However, design of such components is still difficult, due to the intrinsic complexity of the systems and the lack of reliable models. In particular, the combination of adsorption-compression cascade unit has not been widely explored yet and there are no simulations or sizing tools reported in the literature. In this context, the present paper describes a model of a hybrid adsorption-compression system, realised in Modelica language using the commercial software Dymola. The models of the main components of the sorption and vapour compression unit are described in details and their validation presented. In addition, the integrated model is used for proving the feasibility of the system under dynamic realistic conditions and an example of the technical sizing that the model is able to accomplish is given.

Read the full paper at : https://doi.org/10.3390/en12061161

Introducing Mikrometal sro – Aluminium manufacturing company

HYBUILD is a group of 21 partners from 9 countries. Every month, a new HYBUILD partner is introduced in our Blog section. This month, Mikrometal sro.

Mikrometal – In a nutshell

Mikrometal is a production company focused on aluminium manufacturing. The company is located in the heart of Europe near the Czech capital Prague.

The company Mikrometal sro was founded 1991, specializing in mechanical fabrication, welding and robot welding, CNC milling and assembling of aluminium fabricated products. Robots and 5-axis-CNC-machines were standard machines combined with craftsmanship and high skilled workers and technicians. All trainings were done in the company as a part of  know-how development.

Mikrometal s.r.o. Workshop

Mikrometal is engaged in 2 research and development projects: radar precise measuring and aluminium foam. Since 2009 the company has increasingly carried out research activities and related investments in modern manufacturing and measurement technology.  Coming from aluminium, the company combined the traditional processes with the even lighter aluminium foam.

Advantages of aluminium foam:

  • 75% lighter then solid Aluminium
  • freely moldable
  • absorb vibrations
  • high stiffness
  • high bending strength
  • thermally conductive
  • electrically conductive
  • sound absorbing
  • Buoyant
Aluminium foam

Mikrometal sro role in HYBUILD

Within HYBUILD Mikrometal sro  is developing and producing a core part of the adsorption head exchanger with high surface area. For that it is required to produce different types of aluminium foam or cellular structures from aluminium.

Staff involved in Hybuild

Dipl.Ing. Raimund Bastian

Mr. Bastian  graduate Diplom-Ingenieur at Hochschule Wismar, Fakultät für Ingenieurwissenschaften Rostock. Responsible for production and research he has participate at all research projects of the company since 1991.

Dr. Dieter Girlich

Physicist and researcher , doctor of science in physics (University of Regensburg) , patent holder for aluminium foam and heat exchange solutions , inventor or co-inventor  of 12 patents

Introducing CSEM, Innovation and sustainable progress

HYBUILD is a group of 21 partners from 9 EU countries. Every month, a new HYBUILD partner is introduced in our Blog section. This month, CSEM, Centre suisse d’électronique et de microtechnique.

CSEM in a nutshell

CSEM is a private, non-profit research and technology organisation created in 1984. Its mission is to develop and transfer microtechnologies to the industrial sector – in Switzerland, as a priority – in order to reinforce its competitive advantage. It does so through cooperation agreements with established companies as well as by encouraging the creation of start-ups (43 so far, leading to the creation of 400 jobs). It holds 203 patent families and filed 26 new patents last year. CSEM has about 440 employees and achieves an annual turnover of 83 million CHF.

CSEM has its headquarters in Neuchâtel, in the heart of watchmaking region and four regional centers across Switzerland.

Its research is organised in five technology programmes: microsystems, surface engineering, systems, ultra-low-power integrated systems, and PV-center and energy management. Since 2013 CSEM PV-center is the national competence center for photovoltaics. Within this center, a 14-strong team develops solutions to build and manage an efficient, sustainable- energy world based on distributed renewable power generation. It brings together the skills to engineer this new world: power engineering, power electronics, signal processing, machine learning, optimization and control, and systems engineering. It provides services and technologies in three main areas: energy data, decentralized control, and electricity storage in supercapacitors and batteries. Applications of CSEM technologies have already been demonstrated on inverters, in direct current (DC) microgrids, and in energy management systems for residential and commercial buildings. We work with component vendors, system integrators, and utilities to turn these technologies into successful products.


In the framework of the HYBUILD project, CSEM is developing an integrated and certified DC microgrid. This DC microgrid is meant to interface an external distribution grid, a local renewable energy source, a heat pump and a storage system with the objectives of optimizing the system efficiency and compactness. This work includes the selection of optimal components and its integration in compliance with the norm EN/IEC 61439. Moreover, a low-level controller, as well as its communication architecture, will be developed guaranteeing a stable operation of the DC microgrid while offering control flexibilities to a higher level optimizer.

HYPERBAT – A hybrid battery solution integrated at CSEM

Get in touch: CSEM staff involved in HYBUILD

Dr Pierre-Jean Alet received the M.Sc. in engineering from ENSTA ParisTech, Paris, France and the M.Sc. in physics from Université Paris XI, Orsay, France – both in 2005, and the PhD in materials science from École Polytechnique, Palaiseau, France in 2008. From 2008 to 2013 he was with Sharp Laboratories of Europe (UK), a subsidiary of Sharp Corporation. As a research scientist and then a senior researcher there, he initiated activities and strategic partnerships in solar cell technology and energy services. He has been with CSEM since 2013 where he is now a senior expert. He coordinates the Energy systems research activity at CSEM and manages the intellectual property of CSEM PV-center.

Mr Nelson Koch received an MSc in electrical engineering from EPFL, Lausanne, Switzerland in 2017. During his studies, he specialized in smart grid technologies, renewables and energy conversion systems. After graduating, he joined CSEM as an R&D engineer where he is leading the hardware system design and embedded control activities, especially related to DC microgrid. He is co-inventor of a patent application on method of operating an energy system.

Mr Thierry Auderset obtained his Federal Proficiency Certificate of Electrical Assembly at the Professional Centre in Neuchâtel, Switzerland in 2004. He then worked for various companies active in refinery, metallurgy, and electromechanical assembly in which he improved his skills in electric system manufacturing and communication systems wiring. Moreover, he awarded a diploma on the management of the KNX Siemens building automatization system in 2014. He joined the CSEM in 2018 as a Senior Technician and is in charge of vacuum systems and machine troubleshooting, project creation and implementation of preventive maintenance.

HYBUILD is at MIPIM World in Cannes this week !

HYBUILD will be present this week at MIPIM World in Cannes (France), the world biggest real estate fair with over 26.000 participants.

Grab an HYBUILD project postcard & come to discover the future of hybrid energy storage solutions for tomorrow’s residential buildings !

Meet us at the R2M Solution booth P-1 B69  and/or send an email to regis.decorme@r2msolution.com to set an appointment over the 4 days of the event.

About MIPIM Word

Established in 1990, MIPIM is A 4-day real estate event to meet the most influential players from all sectors of the international real estate industry.

It brings the entire value chain together and gives unrivalled access to the greatest number of development projects and sources of capital worldwide.


Save today, use tomorrow ! 28 Feb. 2019, Wels, Austria

Six H2020 research and innovation projects –  HYBUILD, CREATESCORESTESSE2BTHERMOSS, and SUNHORIZON – organised the “Save today, use tomorrow” workshop at WSED, Wels, Austria.

Each project introduced its results and led interactive discussions related to storage innovations for tomorrow’ smart buildings and cities.

Prof. Dr. Luisa F. Cabeza – GREA research group from University of Lleida – presenting HYBUILD intermediate results
HYBUILD representatives at WSED – From left to right: Antoni Castells (Fresnex), Prof. Dr. Luisa F. Cabeza (University of Lleida), Michael Wiesflecker (OCHSNER), Johann Emhofer (AIT – Austrian Institute of Technology)
All speakers of the “Save today Use tomorrow” workshop at WSED 2019

Introducing NOBATEK/INEF4, open innovation for sustainable buildings

NOBATEK/INEF4 is a French non-profit Research and Technology Organisation (RTO) that develops new products and solutions which aim at increasing the sustainability of buildings and cities. Since 2013 it is labelled by the French government as Institute for the Energy Transition (ITE) in the building sector. The core team consist of 60 + researchers, engineers, city planner and architects.

Applying an Open Innovation approach, this core team is co-developing its innovative technologies and solutions with researchers and professionals from different areas from all over the world depending on the specific expertise required.

The activity of NOBATEK/INEF4 is covering the technology transfer from the concept phase to the market and aims at speeding up the technology transfer and modernising the building sector. An important role plays the demonstration of functional prototypes in an operational environment in order to demonstrate the impact of the developed technologies and solutions and help market up-take.

NOBATEK/INEF4 is organised in two business units, one focusing on the development of Innovative Technologies and Solutions and the other providing Innovative Services. The targeted clients are building owners, general contractors, product manufacturers, local authorities and building managers that wish to improve the energy performance and environmental quality of buildings or urban areas.

The offer of NOBATEK/INEF4 includes a wide range of technologies and solutions including support in the definition of construction and urban planning projects, environmental certifications (BREEAM®, LEED®, HQE®, WELL®…), renewable energy design and integration in buildings, co-development of solutions, tools and systems as well as various business opportunities offered to start-up companies, SME or other industry players.


One of HYBUILD’s main objectives is to demonstrate, in real-life operation conditions, the performance of HYBUILD systems under two different climates : Mediterranean and Continental.

To achieve this goal, NOBATEK/INEF4 is working with HYBUILD partners to develop and deploy a building performance monitoring protocol for the three demonstration sites in France, Spain and Cyprus.

NOBATEK/INEF4 support the simulation, thermal modelling and the definition of key performance indicators for HYBUILD systems related to demo sites.

NOBATEK/INEF4 is also responsible for demonstrating the continental hybrid storage concept in the French context, following the installation of the HYBUILD system at the demonstration site in Bordeaux (France) and evaluating the HYBUILD system through the analyses of monitoring results before and after the installation of HYBUILD system.

Get in touch

Dr. Saed RAJI

Team: Tools and system for energy efficiency

Graduated as an engineer in Environment and Sustainable Development from the University of Aleppo (Syria) in 1995 and received his PhD in Energy Efficiency from the University of Bordeaux (Fr) in 2006. He started his career as a lecturer at the University of Aleppo. After a long experience in R&D projects in the Middle East, he joined, in 2013, the National Institute for Energy Transition “NOBATEK – INEF4.”

He is in charge of national and European projects related to the energy performance of buildings and the integration of renewable energy systems in building (BATISOL, PCMFLEX, GEOFIT, BAITYKOOL, PLATSOLAR, …).



Team: Tools and system for energy efficiency

Paul graduated as an engineer in energy process from the IMT Albi in 2010 and in electric vehicle engineering from the ENSAM Paritech in 2011. He has a background in research and development activities for simulation, conception and tests of various thermal equipment’s in the fields of energy and automotive industry in CEA, Renault and Areva. He works in Nobatek since 2014 on the development and integration of new technologies for storage, heating, cooling and venting systems in building application from the first phases of simulation to the full-scale demonstrations. He is involved in local and EU projects.