Conference Agenda

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Session Overview
Session
ADAPT
Time:
Tuesday, 05/July/2022:
11:00am - 12:30pm

Session Chair: Zsuzsa SZALAY
Location: Hall C


Climate change adaptation

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Presentations
11:00am - 11:15am

Implication of Climate Changes on Design of Structures

Jana MARKOVA, Miroslav SYKORA, Vitali NADOLSKI

Czech Technical University in Prague Klokner Institute, Czech Republic

The potential impact of climate changes on construction works should be evaluated, mainly for structures with a longer design life including bridges. The aim is to analyse how anticipated changes in European climate could affect the assessment of design weather parameters, including the partial factor design approach for structures according to Eurocodes, based on current knowledge concerning projection models of future climate in Europe.

The design weather parameters are analysed, considering common types of structures which might be particularly sensible to variations in those parameters. The biggest contributors to the inherent uncertainty in the estimation of climate projections include natural variations in climate due to solar activity, future emissions of greenhouse gases and other harmful resources and uncertainties.

The climatic data on which the current generation of the Eurocodes is based are mostly about 20 years old, with some exceptions of recent updates of national data. The second generation of the Eurocodes is expected to be nationally within next few years. It is foreseen that climatic maps should be revised in Eurocodes.

The partial factors for climate actions should be further calibrated taking into account the characteristics of climate actions. Potential enhancement factor for consideration of climate changes, if needed, should be specified in connection to relevant partial factor of a climate action.



11:15am - 11:30am

Innovation and Experimentation of Adaptive Model for Curtain Wall

Martino MILARDI, Evelyn GRILLO

Mediterranea University of Reggio Calabria, Italy

The entire construction sector is the protagonist, in recent years, of continuous research in terms of innovation of strategies and technical solutions leading to the progressive modification in the structure of the systems that make up the building envelopes, also to cope with climate change. Working on the envelopes today means, in fact, correctly adapting their performance reactions to dynamic climatic conditions. In this scenario, lies the current research, whose goal is the development of an adaptive model, using innovative materials based on the biomimetic approach, which can be applied to curtain wall systems. The investigation conducted through experimental evaluations in the laboratory, the TCLab testing section of the BFL of the Mediterranea University of Reggio Calabria, will provide the formulation of solutions to achieve an adaptive envelope that improves overall performance through new technological strategies. The methodological approach has been prepared on sequential phases, organized in thematic sections, related to a study phase and another application phase, which constituted a real added value to the research, realizing actions of applied experimentation with high-reliability results.



11:30am - 11:45am

Development of a Realistic Scenario for the Thermal Energy Demand of Residential Buildings in Bavaria Till 2050

Michael BARTON, Franziska PICHLMEIER, Marissa WOLTER, Christian SCHWEIGLER

CENERGIE - Center for Energy-Efficient Buildings and Districts, Munich University of Applied Sciences, Germany

In order to achieve the European, German and Bavarian climate protection goals, enormous efforts must be undertaken to accomplish substantial emissions reduction in all sectors: Households, Industry, Commerce, and Transport. Following a straightforward approach, the political objectives foresee, that in the building sector this goal is reached by massive reduction of the final energy use for the heat supply of buildings. However, previous investigations have shown that the targeted reduction of final energy consumption in the building sector is not feasible. Older buildings exhibit especially high energy demand and high CO2 emissions. Yet, due to the low refurbishment rate, no substantial change of the heat demand is to be expected in the near future. By fully renovating the entire residential building stock, approximately 70 % of the final energy demand and related CO2 emissions could be saved, still not enough to reach the political goals. Therefore, goals that achieve reduction of CO2 emissions through a combination of renovation or renewal of buildings and of the use of renewable energy sources have to be defined in order to meet the global objectives.

The methods used to estimate the charactreristics of Bavaria's residential building stock as well as its heating energy demand and related CO2 emissions for the year 2050 are presented. Alternative goals regarding CO2 emissions for the described development of the building stock are given. These statements are based on the achievable final energy saving for a realistic renovation scenario and further reduction of CO2 emissions by using renewable energies.



11:45am - 12:00pm

Sustainability And Resilience In Building Design: Discussion On Two Case Studies.

Licia FELICIONI1, Antonín LUPÍŠEK1,2, Jacopo GASPARI3, Ernesto ANTONINI3

1Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 2077/7, 166 29 Prague, Czech Republic; 2University Centre for Energy Efficient Buildings, Czech Technical University in Prague, Třinecká 1024, 273 43 Buštěhrad, Czech Republic; 3Department of Architecture, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy

Designing sustainable and at the same moment resilient buildings is a necessity to reach the UN Sustainable Development Goals by 2030. However, these two building design approaches – sustainability and resilience – are usually treated separately. Typically, resilience-improving strategies are placed only after a disruptive event and not at the design stage. It is clear that there is a substantial intersection between sustainability and resilience and this manuscript aims to determine more precisely the commonalities and contradictions seen in building design sustainable and resilient approaches as crucial elements for improving their cooperation in buildings. To accomplish this, the authors analyzed two case studies; the first examined building is claimed sustainable and the second to be resilient. A qualitative assessment of these two examples was conducted to understand if a sustainable building can also be considered resilient and vice versa. This paper is addressed to the private and public sectors that have a decisive role in building design and are determined to take tangible steps to influence decision-making and resilience-based solutions already at the design phase. In conclusion, once the commonalities of resilience and sustainability are highlighted, a building designed as sustainable or resilient will be in line with both long-term perspectives.



12:00pm - 12:15pm

Adapting Façade Performances to Climate Change in Northern Europe: Analysis of Future Scenarios for an Office Building in Stockholm

Matteo COSTANZO1, Andrea Giovanni MAININI2, Ivo MARTINAC3, David PARSMAN4, Giuliana IANNACCONE2

1Façade Department, WSP, London, UK; 2Politecnico di Milano, Department of Architecture Built Environment and Construction Engineering, Italy; 3KTH Royal Institute of Technology, Department of Building Services and Energy Systems, Stockholm, Sweden; 4WSP Sverige, Stockholm, Sweden

Future climate change will affect many human activities and sectors. Among those, the built environment will face several challenges about the varying climate conditions, including increased demand for summer cooling and related heat stress indoor conditions. In this framework, the paper presents the results of a recent study that investigated the global warming impacts on energy demand and indoor climate comfort for an office building in Stockholm over the next 50-60 years. The future climate conditions were investigated in 2070 and 2080 with different climate morphing approaches. Three different passive cooling solutions to decrease the cooling demand (such as external roller shade, electrochromic glazing, and internally ventilated shading) have been preliminarily assessed about thermal and optical properties, then integrated into the building energy simulation software IDA-ICE to evaluate the building energy performances regarding different Swedish climates, and finally economically estimated with a simplified LCC analysis. The results indicated that an increment of the cooling demand from 3 up to 24 kWh/m2Atemp and a reduction of the heating usage of 20-50% will be experienced in 50-60 years. The different weather data morphing approaches displayed the inherent uncertainties when future evaluations are performed, although similar weather patterns were found. The improvement of the solar and optical properties indicated a lower cooling and ventilation usage with reductions of about 10-16%. The electrochromic technology reported the lowest cooling demand (decrease up to 24%), while the internally ventilated shading option outperformed the others with an annual energy consumption 4-9% lower and the lowest LCC.



12:15pm - 12:30pm

Climate-Resilient and Resource-Conserving Architecture through Renewable Building Materials and Microclimate Improvement

Elena MITRENOVA, Martin AICHHOLZER, Aída SANTANA SOSA

FH Campus Wien, Austria

Due to climate change, together with the need to reduce the ecological footprint and the future resource shortages, a climate-resilient and resource-conserving architecture must be reinforced. Dealing with the issue of resources not only affects the materialisation of the building, but also the handling of resources on the building site. The interactions between the environment (sun, wind, precipitation), buildings, sealing, plants and people form a complex system in which small changes in few factors can influence the situation on a large scale. In this context, topics such as microclimate improvement around built infrastructure through greening and rainwater management, will gain in importance. The correct assessment of measures for a sustainable and resilient building is extremely complex and time-consuming and requires extensive, multi-layered know-how and experience. This paper analyses the project “House of Learning” (MAGK Architekten) and its immediate surroundings and focuses on its climate resilience and neutrality, proposing improvement measures based on the interaction of blue and green infrastructure and the building. The potential favourable conditions are evaluated through microclimate simulations and planning principles implying an integral approach which includes landscape gardeners, building planners and constructors, as well as decision-makers.



12:30pm - 12:45pm

Performance Of Bioretention Cells During Early Years Of Operation

Petra HEČKOVÁ1,2, Vojtěch BAREŠ2, David STRÁNSKÝ2, Michal SNĚHOTA1,2

1University Centre for Energy Efficient Buildings of Czech Technical University in Prague, Czech Republic; 2Czech Technical University in Prague, Faculty of Civil Engineering

The data on long term performance of low impact development for stormwater management such as bioretention cells are still sparse. The aim of this study was to evaluate experimental bioretention cells designed for long-term monitoring. Two identical experimental BCs were established in December 2017. The first BC1 collects water from the roof and the second BC2 is supplied from the tank for simulating artificial rainfall. The 30 cm thick biofilter soil mixture is composed of 50% sand, 30% compost, and 20% topsoil. Rainfall-runoff episodes, the effective saturated hydraulic conductivity evaluated for the first vegetation season in both BCs. Outflow water quality was measured from one bioretention cell during simulating rainfall. The first vegetation season has shown relatively high runoff coefficient of 0.72, while the peak outflow reduction for individual rainfall events ranged between 75% to 95% for the BC1. The runoff coefficient determined from artificial ponding events was 0.86 for the event started in the partially saturated biofilter, while it was nearly 1.0 for all subsequent artificial ponding events. The peak flow reduction ranged from 19% to 30%. Functionality of experimental setup has been successfully verified and monitoring of BCs continues. The elevated concentration of total suspended solids in the effluent was probably caused by relatively high fraction of clay in the sand filter. The next research results evaluated for the following vegetation seasons will lead to a better understanding of the long-term performance of BC.



 
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