Search

Bacher Jean-Philippe

Professeur HES ordinaire/Responsable d'institut

Main skills

Energy efficiency and management

Innovation & technology management

Main contract

Professeur HES ordinaire/Responsable d'institut

Phone: +41 26 429 67 55

Desktop: HEIA_A20.26 / BFA_19_20_21_B

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH

Institute
Energy - Institut de recherche appliquée en systèmes énergétiques

No data to display for this section

Ongoing

CityPulse

Role: Co-applicant

Description du projet :

Sur la thématique des smart cities, l’évolution récente des capteurs, des réseaux de communication et des algorithmes
de traitements big data ouvrent des perspectives inédites pour l’analyse de nos cités. Un premier objectif du projet sera
d’équiper le quartier BlueFactory de Fribourg et les carrefours adjacents avec des plateformes de capteurs compatibles
« Internet des Objets » et évolutives. Les capteurs seront capables d’inférer le trafic, de mesurer la pollution de l’air, la
pollution sonore et l’illumination ambiante. Un second objectif sera de traiter les informations collectées afin de mettre
en place différents services d’analyse permettant d’estimer des indices de qualité de vie au niveau des quartiers et de
la ville. Finalement, il s’agira de mettre les données récoltées ainsi que les plateformes de capteurs à disposition des
équipes du smart living lab pour leur propres projets.

Research team within HES-SO: Hennebert Jean , Bacher Jean-Philippe , Radu Florinel

Durée du projet: 01.03.2017 - 31.07.2020

Statut: Ongoing

Completed

ProRen - Interventions sur le bâti existant (typologie, technologie de la construction, systèmes énergétiques)

AGP

Role: Co-applicant

Financement: FR - EIA - Institut TRANSFORM; SLL HEIA-FR; Association GEAK-CECB-CECE

Description du projet : Pour faciliter l'optimisation énergétique à grande échelle pour tous les bâtiments jusqu'en 2030 (objectif de l'OFEN), le projet ProRen se propose de créer un cadre facilitant : une compréhension de l'ensemble du processus de rénovation, le développement d'une approche globale de la rénovation tenant compte de décalages de compé-tences entre les acteurs et d'une méthode de récolte et de traitement « intelligents » de données. Ce cadre permet le montage des projets inter-instituts dans le développement futur du thème fédérateur « Interventions sur le bâti existant ».

Research team within HES-SO: Bahnsen Morales Ilse Marlisse , Rudaz Joëlle , Parrat Jonathan , Boumaref Redouane , Fischer Andreas , Runser Julie , Bourrier Hervé , Goyette Pernot Joëlle , Devaux Mylène , Marazzi Sofia , Bacher Jean-Philippe , Schwab Stefanie

Partenaires académiques: FR - EIA - Institut ENERGY; FR - EIA - Institut iTEC

Durée du projet: 01.09.2019 - 31.01.2021

Montant global du projet: 158'928 CHF

Statut: Completed

Multi-Confort (2018-2020)

Role: Co-applicant

Description du projet :

L'apparition de nouveaux types d'environnement de travail cherchant à la fois la satisfaction des usagers et l'accord avec des types de travail spécifiques à l'organisation des entreprises demande une compréhension systémique du confort de l'usager dans les bureaux. Le projet Multi-Confort répond à cet enjeu en prenant en compte les trois composantes du confort (physiologique, psychologique et fonctionnel) et en cherchant les corrélations entre les facteurs ambiants, les types (routines) de travail, l'occupation effective et l'usage des équipements.

Research team within HES-SO: Radu Florinel , Bacher Jean-Philippe , Ingram Sandy , Iseli Yael , Nwachukwu Uchendu , Spoto Martin

Durée du projet: 01.09.2011 - 31.12.2020

Statut: Completed

2022

Definition of building archetypes based on the swiss energy performance certificates database

Scientific paper ArODES

Alessandro Pongelli, Yasmine Dominique Priore, Jean-Philippe Bacher, Thomas Jusselme

Link to the publication

Summary:

The building stock is responsible for 24% of carbon emissions in Switzerland and 44% of the final energy use. Considering that most of the existing stock will still be in place in 2050, it becomes essential to better understand this source of emissions. Although the Swiss Cantonal Energy Certificate for Buildings (CECB) database has been used in previous research, no comprehensive characterization of the buildings can be found. This data paper presents an analysis and classification of the Swiss building stock based on the data found in the database. The objective is to create a knowledge foundation that can be used in future research on the performance of existing buildings. Using a sample of almost 50,000 buildings and a Python script, datasheets were created for single-family houses and multi-family houses for nine construction periods. These archetypes are described through selected available energy-related parameters, such as energy reference area, U-values, and energy source with indicators such as median, 25th percentile, and 75th percentile or distributions. The resulting data can be used for different purposes: (1) to calibrate energy models; (2) for analysis that requires scaling-up strategies to the whole stock; and (3) to identify weak and/or relevant classes of buildings throughout the stock.

Building-integrated photovoltaics (BIPV) combined with hydrogen-based electricity storage system at building-scale towards carbon neutrality

Scientific paper

Couty Philippe, Bacher Jean-Philippe, Sergi Aquacil, Yvan Morier

Proceedings of the Central Europe towards Sustainable Building (CESB22), 4-6 July 2022, Prague, Czech Republic, 2022

Link to the publication

2021

Competition and Living Lab Platform (Annex 74) Science & Technology (Subtask A) :

Book ArODES

main report

Karsten Voss, Sergio Vega Sánchez, Andrea Balcerzak, Susanne Hendel, Katharina Simon, Moritz Stark, Karl Walther, Jan Martin Müller, Joseph Simon, Yuan Tian, Lucas Li, Samir Idrissi Kaitouni, Sebastian Herkel, Jean-Philippe Bacher

2021, Wuppertal : University Wuppertal, 156 p.

Link to the publication

Competition and Living Lab Platform (Annex 74) Science & Technology (Subtask A) :

Book ArODES

topical papers

Karsten Voss, Sergio Vega Sánchez, Sebastian Herkel, Manuel Lämmle, Günther Munz, Jean-Philippe Bacher, Martin Boesiger, Philippe Couty, Ryan Siow, Dimitri Torregrossa, Jan Martin Müller, Frauke Rottschy, Moritz Stark, Andreas Häberle, Igor Bosshard, Florian Ruesch, Nathan Van Den Bossche

2021, Wuppertal : University Wuppertal, 111 p.

Link to the publication

Big Building Data 2.0 :

Scientific paper ArODES

a big data platform for smart buildings

Lucy Linder, Frédéric Montet, Jean Hennebert, Jean-Philippe Bacher

Journal of Physics: Conference Series, 2021, no. 2042, article no. 012016

Link to the publication

Summary:

The modern built environment is now connected. Multiple software and protocols are used in buildings of many kinds, thus creating a fascinating and heterogeneous environment. Within this context, applied research can be complicated and would benefit from a single data location across projects and users. The first version of BBData tried to solve this problem, BBData v2.0 is an update with a better-defined scope and a new codebase. The solution has been open sourced and simplified with a full software rewrite. Its components are now state-of-the-art and proven to be stable in industrial settings. The achieved performances have been thoroughly tested. Together with its new architecture, BBData v2.0 now accommodates the needs of modern experiments; efficient for simple proof of concepts while keeping the possibility to scale up to city-level projects. This flexibility makes BBData a good candidate for research while being able to scale in production settings.

Prediction of domestic hot water temperature in a district heating network

Scientific paper ArODES

Frédéric Montet, Lorenz Rychener, Alessandro Pongelli, Jean Hennebert, Jean-Philippe Bacher

Journal of Physics: Conference Series, 2021, no. 2042, article no. 012026

Link to the publication

Summary:

With the fourth generation of district heating networks in sight, opportunities are rising for better services and optimized planning of energy production. Indeed, the more intensive data collection is expected to allow for load prediction, customer profiling, etc. In this context, our work aims at a better understanding of customer profiles from the captured data. Given the variety of households, such profiles are difficult to capture. This study explores the possibility to predict domestic hot water (DHW) usage. Such prediction is made challenging due to the presence of two components in the signal, the first one bound to the physical properties of the DHW distribution system, the second one bound to the human patterns related to DHW consumption. Our contributions include (1) the analysis of recurrent neural network architectures based on GRU, (2) the inclusion of state-based labels inferred in an unsupervised way to simulate domain knowledge, (3) the comparison of different features. Results show that the physical contribution in the signal can be forecasted successfully across households. On the contrary, the stochastic "human" component is harder to predict and would need further research, either by improving the modelling or by including alternate signals.

Well-being at Work: Applying a Novel Approach to Comfort Elicitation

Scientific paper

Ingram Sandy, Nwachukwu Uchendu, Jan Nicole, Bacher Jean-Philippe, Radu Florinel

Lecture Notes in Computer Science Proceedings of HCI-2021: International Conference on Human-Computer Interaction Digital Human Modeling and Applications in Health, Safety, Ergonomics and Risk Management. Human Body, Motion and Behavior, 19-24 July 2020, Copenhagen, Denmark, 2021

Link to the publication

Summary:

This paper presents a novel approach for assessing comfort at the workplace, resulting from an interdisciplinary work between researchers in hman-computer interaction, architecture, social sciences, smart buildings and energy management. A systemic comfort elicitation model including but not limited to thermal comfort, is suggested. A proof-of-concept prototype application developed based on the proposed model is also presented. The results of a first evaluation of the application's acceptability in a real working environment are discussed.

2020

Rendre visibles les pulsations de la ville :

Professional paper ArODES

mesure, interprétation et représentation des signaux urbains

Jonathan Parrat, Jean-Philippe Bacher, Florinel Radu, Jean Hennebert

bulletin.ch = Fachzeitschrift und Verbandsinformationen von Electrosuisse und VSE = Bulletin SEV/AES : revue spécialisée et informations des associations Electrosuisse et AES, 2020, vol. 6, pp. 22-26

Link to the publication

Battery storage systems for building applications

Professional paper ArODES

Philippe Couty, Dimitri Torregrossa, Jean-Philippe Bacher

Energy in Buildings and Communities Programme (EBC),

Link to the publication

Photovoltaic systems

Professional paper ArODES

Philippe Couty, Martin Boesiger, Jean-Philippe Bacher

Energy in Buildings and Communities Programme (EBC),

Link to the publication

2019

Influencing user behavior in office buildings through a co-creation process in order to achieve better energy efficiency and comfort

Scientific paper ArODES

Martin Boesiger, Matthieu Jourdan, Jean-Philippe Bacher

Journal of Physics: Conference Series,

Link to the publication

Summary:

Providing users with relevant information raises their awareness on the influence of their behavior on the energy consumption and comfort in their workspace. A user-building interface was developed as part of this research through a co-creation process. It provides the occupants of monitored offices with information on their electricity and heating consumption, comfort indicators (temperature and air quality), light control and hints and tips on how to improve their behavior. This contribution describes the methodology used to improve the behavior of users in a pilot building and the results of a 32-week measurement campaign.

Towards an integrated approach of building-data management through the convergence of building information modelling and internet of things

Scientific paper ArODES

Matthieu Jourdan, Florian Meyer, Jean-Philippe Bacher

Journal of Physics: Conference Series, 2019

Link to the publication

Summary:

This contribution presents a possible use of the Building Information Model (BIM) for the implementation of Building Management Systems (BMS) and proposes tools and methods for each critical step of the process. The resulting designed process enables each building stakeholder to work at an earlier stage on the digital model located on a dedicated server. This paper proposes a novel and integrated approach to building-data management and analyses the main obstacles and limitations that may currently affect the practical implementation.

2018

The impact of building occupant behavior on energy efficiency and methods to influence it :

Scientific paper ArODES

a review of the state of the art

Antonio Paone, Jean-Philippe Bacher

Energies, 2018, 11, 953

Link to the publication

Summary:

Buildings consume a significant amount of energy, estimated at about one-third of total primary energy resources. Building energy efficiency has turned out to be a major issue in limiting the increasing energy demands of the sector. Literature shows that building user behavior can increase the efficiency of the energy used in the building and different strategies have been tested to address and support this issue. These strategies often combine the quantification of energy savings and qualitative interpretation of occupant behavior in order to foster energy efficiency. Strategies that influence building occupant behaviors include eco-feedback, social interaction, and gamification. This review paper presents a study conducted on the state of the art related to the impact of building user behavior on energy efficiency, in order to provide the research community with a better understanding and up-to-date knowledge of energy, comfort-related practices, and potential research opportunities. Achieving and maintaining energy-efficient behavior without decreasing the comfort of building occupants still represents a challenge, despite emerging technologies and strategies as well as general research progress made over the last decade. Conclusions highlight eco-feedback as an effective way to influence behavior, and gamification as a new opportunity to trigger behavioral change. The impact of user behavior is difficult to quantify for methodological reasons. Factors influencing human behavior are numerous and varied. Multi-disciplinary approaches are needed to provide new insights into the inner dynamic nature of occupant’s energy behavior.

2017

Big building data :

Scientific paper ArODES

a big data platform for smart buildings

Lucy Linder, Damien Vionnet, Jean-Philippe Bacher, Jean Hennebert

Energy Procedia, 2017, vol. 122, pp. 589-594

Link to the publication

Summary:

Future buildings will more and more rely on advanced Building Management Systems (BMS) connected to a variety of sensors, actuators and dedicated networks. Their objectives are to observe the state of rooms and apply automated rules to preserve or increase comfort while economizing energy. In this work, we advocate for the inclusion of a dedicated system for sensors data storage and processing, based on Big Data technologies. This choice enables new potentials in terms of data analytics and applications development, the most obvious one being the ability to scale up seamlessly from one smart building to several, in the direction of smart areas and smart cities. We report in this paper on our system architecture and on several challenges we met in its elaboration, attempting to meet requirements of scalability, data processing, flexibility, interoperability and privacy. We also describe current and future end-user services that our platform will support, including historical data retrieval, visualisation, processing and alarms. The platform, called BBData - Big Building Data, is currently in production at the Smart Living Lab of Fribourg and is offered to several research teams to ease their work, to foster the sharing of historical data and to avoid that each project develops its own data gathering and processing pipeline.

2022

Building-integrated photovoltaics (BIPV) combined with hydrogen-based electricity storage system at building-scale towards carbon neutrality

Conference ArODES

Sergi Aguacil, Yvan Morier, Philippe Couty, Jean-Philippe Bacher

Proceedings of the Central Europe towards Sustainable Building (CESB22), 4-6 July 2022, Prague, Czech Republic

Link to the conference

Summary:

Electricity storage technologies in buildings are evolving, mainly to reduce their environmental impact and to improve self-sufficiency of buildings that produce their own energy through Building-Integrated Photovoltaics (BIPV) installations. To maximize self-consumption – minimizing the import of grid electricity – photovoltaic (PV) systems can be coupled with a hydrogen storage system converting the electricity to hydrogen by electrolysis during the summer season – when the on-site production is higher – and employing it during the winter season with fuel cells. This study focuses on the sizing constraints of solar hydrogen systems at building-scale using an innovative research-centre that will be built in Fribourg (Switzerland). It presents four stories and a mix-usage (office spaces and research facilities areas) and multi-oriented PV installation in order to produce enough electricity to achieve at least 50% of electricity self-sufficiency ratio. Using the PV production, this study aims to optimise the sizing of a hydrogen storage system allowing to reach the required self-sufficiency ratio with the lowest environmental impact possible. Ultimately, the global energy and financial efficiency of the system will be analysed.

Flexibility shares in a low-voltage distribution grid :

Conference ArODES

identification of dimensioning load peaks and charcterization of impacted end-customers for flexibility activation as a solution for peak mitigation

Teo Brigljevic, Jean-Philippe Bacher, Jean Hennebert

Proceedings of the 6th European Grid Service Market Symposium, 4-5 July 2022, Lucerne, Switzerland

Link to the conference

Summary:

Among the issues distribution system operators are anticipating today, the management of peak loads is at the forefront. This problematic has repercussions on the dimensioning of the network infrastructure that must support these peaks, consequence of the deployment of distribution energy resources like solar panels, or the introduction of future consumption needs driven by the electrification of the energy system. In answer to this problematic, leveraging the electrical flexibility of end-customers mixing consumption and production profiles is considered particularly promising to avoid the oversizing of the grid infrastructure or the use of dimensioning cases too strict for connecting new end-customers to the grid. To determine the flexibility shares the DSOs can use as leeway for the grid management, the end-customers’ load profiles made available by the deployment of advance metering infrastructure are leveraged, in combination with the data obtained from the DSOs’ geographical and network information systems. Utilizing the deployment of their advance metering infrastructure, Groupe E initiated a data-driven project analyzing the load profiles in a typical low-voltage distribution grid covering 269 distinct end-customers. These end-customers present combinations of profiles mixing baseline residential consumption, particular non-standard consumption (heat pumps, electrical vehicles) and production (photovoltaic) profiles. Based on this data, a methodology has been proposed to identify critical loci in time and location where the grid infrastructure reaches its load limits and targets select impacted end-customers for the activation of flexibility lowering in return the peaks critical for the infrastructure. The methodology follows a data-oriented approach to (1) identify the flexibility shares in the grid where the activation improves the load on the infrastructure using the load profiles and (2) propose a flexibility controlling strategy benefiting the grid infrastructure with the analysis of the effects of this strategy on the grid infrastructure and the impacted end-customers.

2021

Virtual reality enabled building-data management through the combination of a fully integrated IFC-BIM model and an IoT-based building management system

Conference ArODES

Sergi Aguacil Moreno, Sebastian Duque Mahecha, Alexandre Dennis Stoll, Tiago De Sousa Pereira, Laurent Deschamps, Jean-Philippe Bacher

Proceedings of Building Simulation 2021 Conference, 1-3 September 2021, Bruges, Belgium

Link to the conference

Summary:

Professionals involved in building construction and monitoring increasingly implement new practices made available by Building Information Modelling (BIM), Virtual Reality (VR) and the Internet of Things (IoT). In spite of numerous efforts, most methods integrating BIM and IoT rely on Application Programming Interfaces (APIs) related to Closed Source Software (CSS), which practically exclude the basic BIM Industry Foundation Classes (IFC) standard. Within the fewer methods actively using the IFC data model to VR-enhanced interfaces, we can observe the loss of crucial IFC information. This article describes a workflow of a BIM-IFC to VR-enabled data management definition, articulating a Building Management Systems' (BMS) database or, as an alternative, an IoT system. This workflow is presented through four phases (model making, device inventory, protocol setting, and real-time VR interaction), which correspond to the actual sections of the information flow that we have successfully tested.

Well-being at work :

Conference ArODES

applying a novel approach to comfort elicitation

Sandy Ingram, Uchendu Nwachukwu, Nicole Jan, Jean-Philippe Bacher, Florinel Radu

Link to the conference

Summary:

2018

Improving building energy efficiency through user behavior change driven by co-created ICT interface

Conference ArODES

Matthieu Jourdan, Damien Vionnet, Martin Boesiger, Jean-Philippe Bacher

Proceedings of 20. Status-Seminar "Forschen für den Bau im Kontext von Energie und Umwelt", Zurich, Switzerland, 6-7 September 2018

Link to the conference

Summary:

The consumption of buildings is strongly influenced by the behavior of its occupants. Therefore, it is important to make users aware of their consumption and help them reduce it. The THE4BEES project presented in this contribution aims (1) to raise users’ awareness of building energy consumption and (2) to optimize comfort and energy efficiency through better user-building interaction. The designed method gives an important role to the user, while increasing use and acceptance, which is sometimes difficult to achieve with fully automatic solutions. To achieve this, a user-building interface (ICT application on a tablet) was developed. This tool provides occupants of two monitored offices with information on their electricity and heating consumption, comfort indicators (temperature and air quality), light control and hints & tips on how to improve their behavior. The implemented architecture system is multiprotocol in order to communicate with sensors and actuators of any type and any manufacturer. A 32 weeks measurement campaign has led to a significant reduction in the electrical consumption of lights and electrical appliances. Air quality in the working environment was also improved thanks to the user interface. This research highlighted that including occupants early in the design process of a user-building interface that meet their expectations is a good way to inform them and make them realize the impact of their behavior on the energy consumption.

Acceptance of building integrated PV (BIPV) solutions in urban renewal :

Conference ArODES

obstacles and opportunities in Switzerland

Martin Boesiger, Jean-Philippe Bacher

Proceedings of 20. Status-Seminar "Forschen für den Bau im Kontext von Energie und Umwelt", Zurich, Switzerland, 6-7 September 2018

Link to the conference

Summary:

The energy transition raises the questions of the performance, the facade potential and the architectural integration of photovoltaic solutions. In this context, understanding the obstacles and opportunities of the market development in a holistic way is a major issue. This contribution relies on the results of the SNSF PNR70 ACTIVE INTERFACES project (sub-project 05) and emphasizes on the aspects of architectural integration (design and technique) as well as on socio-economic aspects, normative and legal aspects and knowledge transfer between the different actors along the value chain of BIPV products. This research considers the urban residential renewal of the city of Neuchatel as a case study in order to evaluate the market potential of BIPV. The used methodology consists in a pragmatic approach, interviewing architects and owners on choices they made for their specific renovation project as well as their viewpoint and beliefs towards PV and BIPV. A planned behavior acceptance model was used to evaluate the influence of different factors such as outcome appraisal, performance beliefs, effort expectancy, normative beliefs and motivation to comply - which generate the behavioral intention - as well as personal skills, environmental constraints and facilitating conditions, which enable action. The findings of this study give a better understanding of the market potential of BIPV in urban renewal process and provide new perspectives on public policies and existing incentive mechanisms. Based on the analysis of stakeholders interviews, practical recommendations that could significantly change current practices in this area are proposed.

2017

Market potential and acceptance of building integrated PV (BIPV) solutions, a practical approach

Conference ArODES

Martin Boesiger, Philippe Couty, Jean-Philippe Bacher

Proceedings of the 12th Conference on Advanced Building Skins, 2-3 October 2017, Bern, Switzerland

Link to the conference

Summary:

Despite technological progress and costs reductions of PV systems, only a marginal part of the solar electricity potential of BIPV is currently harnessed, although BIPV could effectively contribute to the energy transition toward a sustainable electricity production. This study focuses on the market potential of BIPV in the urban renewal process of Neuchatel’s city, a representative example of middle-size cities of the Swiss Plateau. A study of building permits and a statistical analysis of photovoltaic installations commissioned in recent years have demonstrated the growing potential of renovation or transformation of multi-storey residential buildings with progressive densification of urban areas in Switzerland. Then, this research followed a pragmatic approach, interviewing architects on choices they made for their specific renovation project as well as their viewpoint and beliefs towards PV and BIPV. Answers were examined and compared to interviewees profiles, taking into account their knowledge on BIPV and their proneness to install BIPV products. An acceptance model was used to evaluate the influence of different factors which generate the behavioral intention or enable action. Conclusions shows that the principal obstacle to the BIPV is the lack of knowledge about this technology. Then come obstacles of the lack of market pull and the too high cost investment.

Achievements

Search

Bacher Jean-Philippe

Professeur HES ordinaire/Responsable d'institut

Main skills

Energy transition

Energy efficiency and management

Smart Building

Building performance

Intellectual property

Technology transfer

Innovation & technology management

Professeur HES ordinaire/Responsable d'institut