Filter results

48151 results

Lecture: Unveiling homeowners’ behaviour towards energy retrofits: from behavioural and transaction cost perspectives

Lecture: Unveiling homeowners’ behaviour towards energy retrofits: from behavioural and transaction cost perspectives 09 March 2022 16:00 till 17:00 | Add to my calendar Lecture by Queena Qian, Associate Professor at the Faculty of Architecture and the Built Environment and her PhD Shima Ebrahimigharehbaghi Hosted by the Urban Energy Institute Date: 9 March Time: 4-5pm CET Moderator: Henk Visscher Click here to download the presentation. Scroll down to find the recording. Click here to watch the recording The residential sector can contribute substantially to mitigating GHG emissions through large scale energy retrofits. Despite the significant energy saving potential, the retrofit rate in the residential sector in the Netherlands remains very low. Among different sectors, the Dutch owner-occupied housing sector accounted for 57% of the residential stock in 2020. In this subsector, homeowners are entirely responsible for carrying out the energy retrofits. Moreover, the energy retrofit processes are complex and homeowners face issues, such as, finding financial support, reliable information and contractors. The complexities in conducting energy retrofits may hinder homeowners from the continuation of the process and their expected benefits. Behavioural aspects and transaction cost (TC) factors are among the main influencing factors in the consumers' decision-making processes. Behavioural factors mainly illustrate a range of personal, contextual, and external factors influencing homeowners' decision-making processes. It includes cognitive awareness and biases, attitudes and beliefs, experience, and skills, homeowners' features, socio-demographics, property characteristics, other people's behaviours. The transaction cost (TC) means any hidden cost that affects the decision-making but is not included in the direct physical costs of renovation services and products. Our research indicates the significant importance of these behavioural factors and TC barriers. The main findings include: (1) the lack of energy retrofits tailored to the needs of a particular group of buildings and households, (2) the need to use the right message and the right messenger of the particular household group to promote energy retrofits, (3) the inadequate implementation of behavioural interventions and nudges to promote energy retrofit, and (4) the lack of integrated financial, informational and technical support, especially for homeowners interested in energy retrofits. The purpose of this presentation is to explain in detail the application of the behavioural insights and transaction cost factors on the energy retrofit decision making and renovation processes and the potential misalignments in the current energy policy. About the Speakers: Queena K QIAN is an Associate Professor at Department of Management in Built Environment, Faculty of Architecture and the Built Environment, Delft University of Technology. Before this appointment, She was employed as Research Assistant Professor at Building and Real Estate Dept., the Hong Kong Polytechnic University. Her PhD thesis, entitled “Barriers to Promote Building Energy Efficiency- A Transaction Costs Perspective”, which has been awarded the Faculty’s best thesis award at the Hong Kong Polytechnic University in 2012. Her research has received her international awards: e.g., Delft Technology Fellow (2014), Endeavour Australian Cheung Kong Fellow (2013), Australia, and Fulbright recipient (2010) at Lawrence Berkeley National Laboratory at UC Berkeley, USA. During her PhD, she has received invitation from Prof. Douglas North, 1993 Nobel Laureate Economist, for six-month research with him on the application of transaction costs theory into sustainable building research at Washington University in St Louis, the USA in 2010. Her research interests are green building promotion, building energy renovation, urban renewal, age-friendly design, governance and incentive schemes, etc., using behavioural science approach and transaction costs theory. Since 2015, she has been the editor of the Journal of Housing and the Built Environment. Since 2018, she has been the Honorary Fellows at The University of Hong Kong Ronald Coase Centre for Property Rights Research (RCCPRR). Shima Ebrahimigharehbaghi obtained a Master of Science in Engineering and Policy Analysis at Delft University of Technology. After completing her master’s degree, she was eager to continue her research, and to apply her educational background in economics, especially in the field of sustainability. In 2018, she started her PhD under the supervision of Prof. Dr. ir. H.J. Visscher and Dr. Queena K. Qian. In parallel with her PhD, she worked on other projects related to energy efficiency in the building sector and has the privilege to work under the supervision of Prof. L. Itard, Prof. Marja Elsinga, and Dr. Harry van der Heijden. These projects, IEA EBC Annex 70 – Building Energy Epidemiology and Housing 4.0 Energy projects, later led to publications in various journals. Watch the Recording This content is being blocked for you because it contains cookies. Would you like to view this content? By clicking here , you will automatically allow the use of cookies. Watch it on Collegerama here . Check out more of the Urban Energy Institute's upcoming and past events here .

Half Height Horizontal

Students Amos Yusuf, Mick Dam & Bas Brouwer winners of Mekel Prize 2024

Master students Amos Yusuf, from the ME faculty (Mick Dam, from the EEMCS faculty and graduate Bas Brouwer have won the Mekel Prize 2024 for the best extra scientific activity at TU Delft: the development of an initiative that brings master students into the classroom teaching sciences to the younger generations. The prize was ceremonially awarded by prof Tim van den Hagen on 13 November after the Van Hasselt Lecture at the Prinsenhof, Delft. They received a statue of Professor Jan Mekel and 1.500,- to spend on their project. Insights into climate change are being openly doubted. Funding for important educational efforts and research are being withdrawn. Short clips – so called “reels” – on Youtube and TikTok threaten to simplify complex political and social problems. AI fakes befuddle what is true and what is not. The voices of science that contribute to those discussion with modesty, careful argument and scepticism, are drowned in noise. This poses a threat for universities like TU Delft, who strive to increase student numbers, who benefit from diverse student populations and aim to pass on their knowledge and scientific virtues to the next generation. It is, therefore, alarming that student enrolments to Bachelor and Master Programs at TU Delft have declined in the past year. Students in front of the class The project is aimed to make the sciences more appealing to the next generation. They have identified the problem that students tend miss out on the opportunity of entering a higher education trajectory in the Beta sciences – because they have a wrong picture of such education. In their mind, they depict it as boring and dry. In his pilot lecture at the Stanislas VMBO in Delft, Amos Yusuf has successfully challenged this image. He shared his enthusiasm for the field of robotics and presented himself as a positive role model to the pupils. And in return the excitement of the high school students is palpable in the videos and pictures from the day. The spark of science fills their eyes. Bas Brouwer Mick Dam are the founders of NUVO – the platform that facilitates the engagement of Master Students in high school education in Delft Their efforts offer TU Delft Master Students a valuable learning moment: By sharing insights from their fields with pupils at high school in an educational setting, our students can find identify their own misunderstandings of their subject, learn to speak in front of non-scientific audiences and peak into education as a work field they themselves might not have considered. An extraordinary commitment According to the Mekel jury, the project scored well on all the criteria (risk mitigation, inclusiveness, transparency and societal relevance). However, it was the extraordinary commitment of Amos who was fully immersed during his Master Project and the efforts of Brouwer and Dam that brought together teaching and research which is integral to academic culture that made the project stand out. About the Mekel Prize The Mekel Prize will be awarded to the most socially responsible research project or extra-scientific activity (e.g. founding of an NGO or organization, an initiative or realization of an event or other impactful project) by an employee or group of employees of TU Delft – projects that showcase in an outstanding fashion that they have been committed from the beginning to relevant moral and societal values and have been aware of and tried to mitigate as much as possible in innovative ways the risks involved in their research. The award recognizes such efforts and wants to encourage the responsible development of science and technology at TU Delft in the future. For furthermore information About the project: https://www.de-nuvo.nl/video-robotica-pilot/ About the Mekel Prize: https://www.tudelft.nl/en/tpm/our-faculty/departments/values-technology-and-innovation/sections/ethics-philosophy-of-technology/mekel-prize

New catheter technology promises safer and more efficient treatment of blood vessels

Each year, more than 200 million catheters are used worldwide to treat vascular diseases, including heart disease and artery stenosis. When navigating into blood vessels, friction between the catheter and the vessel wall can cause major complications. With a new innovative catheter technology, Mostafa Atalla and colleagues can change the friction from having grip to completely slippery with the flick of a switch. Their design improves the safety and efficiency of endovascular procedures. The findings have been published in IEEE. Catheter with variable friction The prototype of the new catheter features advanced friction control modules to precisely control the friction between the catheter and the vessel wall. The friction is modulated via ultrasonic vibrations, which overpressure the thin fluid layer. This innovative variable friction technology makes it possible to switch between low friction for smooth navigation through the vessel and high friction for optimal stability during the procedure. In a proof-of-concept, Atalla and his team show that the prototype significantly reduces friction, averaging 60% on rigid surfaces and 11% on soft surfaces. Experiments on animal aortic tissue confirm the promising results of this technology and its potential for medical applications. Fully assembled catheters The researchers tested the prototype during friction experiments on different tissue types. They are also investigating how the technology can be applied to other procedures, such as bowel interventions. More information Publicatie DOI : 10.1109/TMRB.2024.3464672 Toward Variable-Friction Catheters Using Ultrasonic Lubrication | IEEE Journals & Magazine | IEEE Xplore Mostafa Atalla: m.a.a.atalla@tudelft.nl Aimee Sakes: a.sakes@tudelft.nl Michaël Wiertlewski: m.wiertlewski@tudelft.nl Would you like to know more and/or attend a demonstration of the prototype please contact me: Fien Bosman, press officer Health TU Delft: f.j.bosman@tudelft.nl/ 0624953733

A key solution to grid congestion

On behalf of the TU Delft PowerWeb Institute, researchers Kenneth Brunninx and Simon Tindemans are handing over a Position Paper to the Dutch Parliament on 14 November 2024, with a possible solution to the major grid capacity problems that are increasingly cropping up in the Netherlands. The Netherlands is unlikely to meet the 2030 climate targets, and one of the reasons for this is that large industry cannot switch to electricity fast enough, partly because of increasingly frequent problems around grid capacity and grid congestion. In all likelihood, those problems will actually increase this decade before they can decrease, the researchers argue. The solution offered by the TU Delft PowerWeb Institute researchers is the ‘flexible backstop’. With a flexible backstop, the current capacity of the power grid can be used more efficiently without sacrificing safety or reliability. A flexible backstop is a safety mechanism that automatically and quickly reduces the amount of electricity that an electric unit can draw from the grid (an electric charging station or a heat pump) or deliver (a PV installation). It is a small device connected or built into an electrical unit, such as a charging station or heat pump, that ‘communicates’ with the distribution network operator. In case of extreme stress on the network, the network operator sends a signal to the device to limit the amount of power. Germany recently introduced a similar system with electric charging stations. The backstop would be activated only in periods of acute congestion problems and could help prevent the last resort measure, which is cutting off electricity to users. ‘Upgrading the electricity network remains essential, but in practice it will take years. So there is a need for short-term solutions that can be integrated into long-term planning. We, the members of the TU Delft PowerWeb Institute, call on the government, network operators and regulator to explore the flexible backstop as an additional grid security measure,’ they said. The entire Paper can be read here . Kenneth Brunninx Associate Professor at the Faculty of Engineering, Governance and Management, where he uses quantitative models to evaluate energy policy and market design with the aim of reducing CO2 emissions. Simon Tindemans is Associate Professor in the Intelligent Electrical Power Grids group at Faculty of Electrical Engineering, Mathematics and Computer Science. His research interests include uncertainty and risk management for power grids. TU Delft PowerWeb Institute is a community of researchers who are investigating how to make renewable energy systems reliable, future proof and accessible to everyone.