Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Session Overview
Tuesday, 05/July/2022:
3:30pm - 5:00pm

Session Chair: Alexandra TROI
Location: Hall B

Innovative technologies and systems

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3:30pm - 3:45pm

Implementation Strategies for Renovation Concepts Based on Participative Processes

Matthias HAASE

ZHAW, Switzerland

The potential for reducing GHG emissions by district renovation is largely untapped. It not only requires a thorough Energy Master Planning (EMP) of the district but also support of the decision-making processes. This can not only contribute significantly to reducing energy consumption and securing the location of energy infrastructure (generation, distribution, storage), but also to long-term sustainable development and climate neutrality.

Understanding the different solutions for district renovation which include combinations with energy supply and consumption is important in districts. The multi-owner structure in many districts requires another set of solution finding that is embedded in potential analysis, stakeholder analysis, participative planning, and multi-actor-Management. A district near Winterthur, Switzerland was analyzed in respect to the aforementioned aspects. Site visits and structured interviews with key stakeholders were used to collect data which was then analyzed. The results show that the technical potential for a decarbonization is large. However, financial and social aspects are significant and lead to a delay in implementation. This demonstrates the complexity of district renovation and provides insights in success factors for decarbonization of districts. Based on the findings a number of recommendations are given. These include communication strategies and integration of community finance models.

3:45pm - 4:00pm

INTERACT - Integration of Innovative Technologies of PEDs into a Holistic Architecture

Helmut BRUCKNER1, Marketa ADAMCOVA2, Albana ILO3, Andrea WERNER4

1Sonnenplatz Großschönau GmbH, Austria; 2LEEF Technologies s.r.o., Czech Republic; 3Technical University Vienna, Austria; 4University of Applied Science Technikum Vienna, Austria

NTERACT is an international research and innovation project which boosts the emergence of Energy Communities as one crucial building block to achieve Positive Energy Districts. It will design an optimal organization and structure for Energy Communities based on success-factors of existing PED/PEN approaches, stakeholder needs and motivation, the available technologies, and a holistic LINK-based architecture. The project will develop a roadmap for the Energy Community’s secure and reliable embedding into the power system structure, focusing on two pilot regions, a greenfield project in Sweden and an existing municipality in Austria.

Business models in the energy sector are changing and becoming more customer-centric: The customers play an active role in energy supply. The way in which the power grid should be managed, as well as the interaction between all actors in the energy value chain, should become more direct, simpler and more structured. With the LINK-based holistic approach, technological and market-related solutions are delivered that maximize the benefit for the environment and society. It is used to ensure the integrity of the solution by harmonizing all interactions within the Energy Community itself and between it and the market and the European power system. Its standardized and flexible structure allows the straightforward application of the roadmap to perfectly meet the diverse necessities of local communities, thus supporting the large-scale roll-out of the new control paradigms.

The generated knowledge will be used within a follow-up projects that realizes the INTERACT Energy Communities within the focus regions and all over Europe.

4:00pm - 4:15pm

Excellence in Building Science Education: Experiences with a Central European Experiment

Ardeshir MAHDAVI1, Bob MARTENS2, Ulrich PONT1, Matthias SCHUSS1, Helene TEUFL1, Christiane BERGER3

1Department of Building Physics and Building Ecology, TU Wien, Karlsplatz 13, 1040 Vienna, Austria; 2Institute of Architecture and Design, TU Wien, Karlsplatz 13, 1040 Vienna, Austria; 3Department of Architecture, Design and Media Technology, Aalborg University, 9000 Aalborg, Denmark

The spectrum of educational programs in building science is wide and diverse. Whereas the academic landscapes across the world vary significantly, general discourse postulates certain rather broad characterizations. For instance, some schools, especially in the Anglo-Saxon context, are suggested to target a selective, private, and high-tuition approach. Others, particularly in the European context, have a more broad, public, and affordable nature. Even though highly simplistic and perhaps even misleading, this distinction has been frequently accompanied by the implicit assumption that true excellence (the so-called world-class) education in general and building science education in particular is possible only in the former settings. In this paper, we report on a specific academic degree program, namely the Master in Building Science and Technology (BST) program, which may be argued to cast doubt on this assumption. Initiated at TU Wien, Austria, BST was offered over a period of almost two decades. In this paper, we briefly present the genesis of this program, its features, its accomplishments, and its termination. Thereby, our primary objective is to inform similar and future initiatives, particularly across Central Europe, where many public universities exist, the building industry has a substantial presence, and the education of a future generation of technically competent, environmentally conscious, and socially responsible building planners and engineers is of essence.

4:15pm - 4:30pm

Transformation and Acceleration of the Construction Supply Chain through Smart Factories

Bennet ZANDER1, Kerstin LANGE1, Yanaika DECORTE2, Marijke STEEMAN2, Christian STRUCK3, Chris GIELING3

1Jade University of Applied Sciences, Department of Maritime and Logistics Studies, Elsfleth, Germany; 2Ghent University, Architecture and Urban Planning, Ghent, Belgium; 3Saxion University of Applied Sciences, Sustainable Building Technology, Enschede, Netherlands

The European building stock is in high need of refurbishment due to its contribution to excessive global energy consumption. In the North-Sea Region (NSR) alone there are 22 million houses built between 1950 and 1985 with an annual CO2 emission of 79 Mton. Current deep retrofits are carried out on a limited-scale production, which may result in climate targets not being met in time. To tackle the need for rapid renovations, prefabricated insulation elements with integrated intelligent technologies, manufactured in novel smart factories using mass customization, could offer a solution. This approach is also followed by the Interreg project INDU-ZERO. The project examines a far-reaching automated production and develops a blueprint for a smart construction factory in the NSR that can produce 15,000 renovation packages per year. This paper aims to quantify the acceleration potential of the supply chain by improving its production, logistics, and on-site mounting processes for Dutch single-family terraced houses. First, the design of the renovation packages and smart construction factories are introduced. Then, the procedure is elaborated on how the supply chain can be abbreviated. The results show that the renovation cycle time can be completed within two weeks through coordinated efforts between production, logistics, and mounting.

4:30pm - 4:45pm

The Road to Circularity: a Framework for and Experiences in Collecting Road Data in a Circular Renovation Process


Saxion University of Applied Sciences, Enschede, The Netherlands

The construction and transport sectors both have a substantial impact on the environment. The construction, maintaining and renovating of roads involves both these sectors and the environmental impact of this work can be reduced. The basic principle of a circular economy is to close material loops and so retain the highest utility, quality and value of products, components and materials as possible. An important question in this respect is how to qualify and quantify material flows. Material and project passports seem to be part of the solution to improve insights and sharing information on quantities and qualities of materials used in construction projects. This paper has used a literature study on material passports and has taken into account current project management software used by a municipality, in order to share a framework for organising and collecting road construction data. Furthermore, various scanning equipment and procedures were employed onsite in an experiment in collecting actual road data. This resulted in a large amount of different data files that have been interpreted and incorporated into the existing database structure of the municipality. The insights gained may help other researchers, principals and contractors in the road construction industry in collecting and storing reliable data necessary to renovate roads circularly.

4:45pm - 5:00pm

Low Rents And Low Operating Costs In Social Housing - An Example From Germany


Institut Wohnen und Umwelt GmbH, Germany

The social housing project “PassiveHouseSocialPlus” shows how low rents and low operating costs can be combined. Different concepts for reducing operating or ancillary costs were implemented and tested in two apartment buildings in Germany. In addition to passive house standard and efficient hot water preparation, the total of 42 low rent residential apartments are equipped with e.g. energy-efficient kitchen appliances, LED lighting and gray water usage for flushing toilets.

A special feature is the flat-rate billing of most operating costs. As a result, the residents are not subject to unforeseen expenses and billing for the landlord is simplified. Since the energy consumption for heating has been greatly reduced by the passive house standard, space and water heating is also included in the flat rate. For drinking water and household electricity budgets have been agreed in the operating costs that are sufficient if people behave economically. If these budgets are exceeded, the tenants have to buy additional quantities. In order to inform the tenants how much of their budget is actually being used up, the consumption of water and electricity is measured and shown to the tenants over time on a display in the apartment. This is also supposed to keep the consumption low.

Basic results are that heat usage is about in the calculated range. The budgets for drinking water and electricity are only exceeded slightly. At the same time, the running costs are around 30% below the costs of comparable apartments.

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