Model and data management issues in the integrated assessment of existing building stocks

The increasing population growth and urbanization rises the worldwide consumption of material resources and energy demand. The challenges of the future will be to provide sufficient resources and to minimize the continual amount of waste and energy demand. For the achievement of sustainability, increasing recycling rates and reuse of materials, next to the reduction of energy consumption has the highest priority. This article presents the results of the multidisciplinary research project SCI_BIM, which is conducted on an occupied existing building. Within SCI_BIM, a workflow for coupling digital technologies for scanning and modeling of buildings is developed. Laser scanning is used for capturing the geometry, and ground-penetrating radar is used for assessing material composition. For the semi-automated generation of an as-built BIM, algorithms are developed, wherefore the Point-Cloud serves as a basis. The BIMmodel is used for energy modeling and analysis as well as for the automated compilation of Material Passports. Further, a gamification concept will be developed to motivate the buildings’ users to collect data. By applying the gamification concept, the reduction of energy consumption together with an automated update of the as-built BIM will be tested. This article aims to analyze the complex interdisciplinary interactions, data, and model exchange processes of various disciplines collaborating within SCI_BIM. Results show that the developed methodology is confronted with many challenges. Nevertheless, it has the potential to serve as a basis for the creation of secondary raw materials cadaster and for the optimization of energy consumption in existing buildings

Life-cycle Oriented Renovation Strategies for Social Housing Stock

Buildings cause 40% of total energy consumption, and 20% of CO2 emissions worldwide. In the European context, the main potential for the achievement of energy efficient built environment remains with the existing stock. This paper will present the life-cycle oriented renovation strategies for historic, especially large social housing stock, in order to meet the increased requirements in terms of energy efficiency simultaneously providing affordable housing and meeting the demands for monument conservation. Specific renovation-issues such as insufficient standard or size of housing units, demographic change (aging of society), thermal insufficiencies and partial obsolescence of building structure are bound to the age and typology of this specific stock. The developed strategies are based on the variations of façade-insulation technology and in further step on variation of building-hull refurbishment-level and energy system, applying the methodology of life cycle analysis (CO2-equivalent assessment) and calculation of amortization- periods for refurbishment-investment. The developed renovation strategies were evaluated in terms of cultural-historical, ecologic and economic criteria. The findings demonstrate the importance of operation-phase in the building life-cycle, which is crucial for the economic and ecologic impact causing the largest energy consumption and related CO2 emissions. Due to the very long payback periods for refurbishment in the context of social housing, incentives for owners as well as support for the use of more sustainable heating systems for the tenants are necessary

Assessment of sustainable use of material resources in the Architecture, Engineering and Construction industry - a conceptual Framework proposal for Austria

Circular economy in Architecture, Engineering, and Construction requires consideration in the design, deconstruction-planning, and waste management. This paper aims to develop a Framework to evaluate the material sustainability of buildings by comparing the proportionality of costs to environmental impacts of construction waste flows. Therefore, an extensive literature review was conducted to find parameters needed, such as building certification, life cycle assessment, or material passports. Next, a distillation process was conducted to reduce the large number of parameters found to be manageable. Following the applicable legislation, procedures to be carried out at different stages, from dismantling to recycling or treatment, were defined. Practical applications were derived, such as support for deconstruction management, resource management, and conclusions for planning. The final parameters were assigned to these processes. Due to a lack of data, data collection and public data provision are essential for applicability

Assessment of BIM Potentials in interdisciplinary Planning through Student Experiment and Practical Case Study

It is argued that Building Information Modelling technology bears significant potentials for enhancement of more integrated design and planning process, and further more for life cylce managament of built environmet. Through creation of a joint model, serving as common knowledge base for parttaking disciplines, the knowledge from the design pahse can easily be transferred into the operational phase. BIM offers a powerfull tool for monitoring, optimization and simulation of building operation, building as such a platform for data transfer and management necessary for the management and governance of the smart city. This paper will presens the results of the empirical research – a multidisciplinary student experiment carried out at the Vienna University of Technology, with the students of architecture, civil engineering and master of building science. In the course of the empirical research a multidisciplinary design for energy efficient building structure is simulated, using various BIM tools (for architectural and structural modelling and simulation, thermal and light simulation) and testing the interoperability as well as the process integration. The special focus lies on the test of interfaces, as crucial factor for process integration, satisfaction and efficiency, which was demonstrated in the pilot experiment. Two BIM models “one-platform-BIM” using proprietary interfaces and “open-BIM” using IFC interface will be evaluated and compared in terms of efficiency of data-exchange and transferability, as well as in terms of satisfaction with process and collaboration. Finally, the results obtained from the experiment will be compared to the experiences gained from the practical case study – BIM use in two planning firms – in order to identify optimization potentials for the planning practice as well as key performance indicators for integrated design supported by BIM tools

Research Project Cost Benefits of Integrated Planning: First experiment-results

Beyond the classical planning goals, design processes for sustainable buildings feature a high number of integrated planning objectives that link economical, ecological and socio-cultural aspects. With increasing demands on building performance, the number of tools for evaluation, prediction and simulation of the energy, cost and emissions efficiency is rising, as is the number of experts and the relevant professional languages applied in their planning processes. Therefore we argue that the design and planning processes for sustainable buildings represent dynamic social systems characterised by a high level of complexity. The communication and decision making mechanisms as well as the organisational structures used in the planning processes deserve particular interest as they directly influence the achievement of the desired building performance. This paper presents the interdisciplinary research project:”Cost-Benefits of Integrated Planning,” (Co_Be) and the experimental study conducted within this framework. This experiment was organised as a student-competition role-play for the design of a temporary smoothie-bar in order to compare the integrated with the traditionally sequential planning practice. Preliminary qualitative and quantitative results of this experiment are provided

Energetski učinkovita proizvodnja – interdisciplinarni, sistemski pristup kroz integralnu simulaciju

If the main concern of manufacturing companies was increasing the productivity, reliability, flexibility, and quality of the industrial process, more recently the energy efficiency of the production process and facilities has come under scrutiny. To enhance the energy-efficiency of production facilities, detailed information regarding the production processes, heat emissions from machines, operation level and occupancy analysis are necessary. In this context, the present paper describes an ongoing research effort that aims to develop a systemically integrated model of an energy efficient production facility. In this context we demonstrate the initial results of the implementation of an integrated simulation approach for a specific industrial facility. On the case study of an existing facility the different levels of energy in-and outputs were analysed; starting from machines and production systems, user behaviour and building services related requirements, to the building envelope of the facility. The collected information was further processed to develop a new building design. This layout provides the basis of an initial building performance simulation model. The generated model is part of the integrated simulation approach and used as a starting point to address the impact of different design and building operation options on the indoor climate and energy performance of the industrial facility. The goal of the integrated simulation approach is to evaluate a production facility not separately for individual mandates pertaining to production process, building envelope, and systems, but in a coupled and integrated fashion. Based on the results of thermal simulation, a first life-cycle costs model is developed, upon which the crucial points for the decision-making process in the planning of an energy-efficient industrial facility can be identified.Među glavnim interesima proizvodnih poduzeća do sada su bili povećanje produktivnosti, pouzdanosti, fleksibilnosti i kvalitete industrijskog procesa, a nedavno se pod povećalom našla i energetska učinkovitost proizvodnog procesa i pogona. U cilju poboljšanja energetske učinkovitosti proizvodnih pogona potrebne su detaljnije informacije o procesu proizvodnje, izmjeni topline u strojevima i analiza učinka i zastupljenosti pogona u radu. U tom kontekstu, ovaj rad opisuje istraživanje koje je u tijeku i teži razvoju sustavno integriranog modela energetski učinkovite proizvodnje u pogonu. U tom kontekstu prikazani su početni rezultati provedbe integriranog simulacijskog pristupa za određeni industrijski pogon. U početnoj studiji slučaja postojećeg pogona analizirane su različite razine ulaznih i izlaznih podataka o energiji; uključujući strojeve i proizvodne sustave, ponašanja korisnika, učinkovitosti kućne tehnike te ovojnice zgrade pogona. Prikupljeni podaci dodatno su obrađeni u cilju razvoja novog građevinskog projekta. Prijedlog koncepcije novog pogona pruža osnovu za prikaz početnog učinka simulacijskog modela na zgradi. Razvijeni model je dio integriranog simulacijskog pristupa te se koristi kao početna točka u simulaciji utjecaja različitih koncepata organizacije prostora i volumena zgrade, kvalitete ovojnice zgrade i kućne tehnike na energetsku učinkovitost industrijskog pogona. Cilj integriranog simulacijskog pristupa je procijeniti energetske performanse proizvodnog pogona, ali ne za pojedine zadaće koje se odnose na proces proizvodnje, ovojnicu zgrade i sustave, nego na povezani i integrirani način. Razvijen je prvi modela troška vijeka trajanja koji se temelji na toplinskim simulacijama, koji je presudan u procesu donošenja odluka u planiranju energetske učinkovitosti industrijskog pogona

Proceedings of the 29th EG-ICE International Workshop on Intelligent Computing in Engineering

This publication is the Proceedings of the 29th EG-ICE International Workshop on Intelligent Computing in Engineering from July 6-8, 2022. The EG-ICE International Workshop on Intelligent Computing in Engineering brings together international experts working on the interface between advanced computing and modern engineering challenges. Many engineering tasks require open-world resolution of challenges such as supporting multi-actor collaboration, coping with approximate models, providing effective engineer-computer interaction, search in multi-dimensional solution spaces, accommodating uncertainty, including specialist domain knowledge, performing sensor-data interpretation and dealing with incomplete knowledge. While results from computer science provide much initial support for resolution, adaptation is unavoidable and most importantly, feedback from addressing engineering challenges drives fundamental computer-science research. Competence and knowledge transfer goes both ways. &nbsp

Proceedings of the 29th EG-ICE International Workshop on Intelligent Computing in Engineering

This publication is the Proceedings of the 29th EG-ICE International Workshop on Intelligent Computing in Engineering from July 6-8, 2022. The EG-ICE International Workshop on Intelligent Computing in Engineering brings together international experts working on the interface between advanced computing and modern engineering challenges. Many engineering tasks require open-world resolution of challenges such as supporting multi-actor collaboration, coping with approximate models, providing effective engineer-computer interaction, search in multi-dimensional solution spaces, accommodating uncertainty, including specialist domain knowledge, performing sensor-data interpretation and dealing with incomplete knowledge. While results from computer science provide much initial support for resolution, adaptation is unavoidable and most importantly, feedback from addressing engineering challenges drives fundamental computer-science research. Competence and knowledge transfer goes both ways. &nbsp

Model and data management issues in the integrated assessment of existing building stocks

The increasing population growth and urbanization rises the worldwide consumption of material resources and energy demand. The challenges of the future will be to provide sufficient resources and to minimize the continual amount of waste and energy demand. For the achievement of sustainability, increasing recycling rates and reuse of materials, next to the reduction of energy consumption has the highest priority