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Improved mesoscopic meteorological modelling of the urban climate for building physics applications
(2023)Journal of Physics: Conference Series ~ Proceedings of NSB 2023: 13th Nordic Symposium on Building PhysicsA meteorological mesoscale model is used to predict the local urban climate at 250 m resolution. The authors propose a hybrid machine learning approach to improve the prediction accuracy and remove simulation bias. Two case studies are presented to show the improvements of the simulation accuracy. Based on the hybrid model results, using cooling degree hours is proposed as an insightful time-dependent index to map local hotspots and assess ...Conference Paper -
Impact of Tree Leaf Area Density on Cooling and Ventilation of an Urban Neighborhood
(2023)Journal of Physics: Conference Series ~ Proceedings of NSB 2023: 13th Nordic Symposium on Building PhysicsThe impact of trees during heat waves can be diverse, as their interaction with their surroundings depends on several parameters that modify shading, ventilation potential and transpiration rate. A multiscale coupled model is presented that allows the detailed analysis of the local impact of vegetation as a mitigation measure for urban heat islands. A case study is performed on an urban neighborhood in Zurich, Switzerland, with an aim to ...Conference Paper -
Blockchain for regenerative built environment governance
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Regenerative PlanningRegenerative approaches have gained attention in the built environment, but remain highly conceptual. This position paper argues for new regenerative governance structures that consider data governance, reassess complex stakeholder interactions, and ensure the inclusivity of diverse values and ownership. It then presents early ideas on how blockchain technology could facilitate scalable socio-economic-ecologic interactions along three ...Conference Paper -
Data-driven modeling of heat pumps and thermal storage units for MPC
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Energy Performance ModellingHeat pumps can play a crucial role in the European energy strategy 2050, which aims to achieve net-zero greenhouse gas emissions. When coupled with thermal energy storage and integrated with advanced control strategies, heat pump operation can be optimized to reduce carbon footprint and respond to the needs of system operators. However, to scale in a multitude of buildings, the transferability of the modeling into heterogeneous systems ...Conference Paper -
Veggies and PV: Optimization of Building-Integrated Agriculture in an Energy Hub
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Urban MetabolismBuilding-integrated Agriculture (BIA) is the concept of utilizing facade surfaces for crop production. The potential is to reduce land-use and to increase the utility of built-up area. If outdoor building surfaces were to be used for farming, it results in a competition for sunlight between crops, solar renewable energy (such as photovoltaics, PV), and daylight access to illuminate indoor spaces. We therefore propose a coupled BIA and ...Conference Paper -
Upscaling potential of BIPV for public housing typologies in Singapore
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Renewable EnergyThis paper assesses the upscaling potential of Building Integrated Photovoltaics (BIPV) in the public housing stock of Singapore. While the installation of rooftop PV is gaining rapid traction in the city-state, there are still only few existing projects with façade PV. Considering the large share of façade areas available, this paper aims to identify the most suitable building typology for BIPV integration. The research methodologies ...Conference Paper -
The GHG Emission Timeline – Integrating sustainability assessment into the early building design stage
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Life-Cycle AnalysisTo address the challenges of integrating sustainability assessment such as life cycle assessment (LCA) in the early building design stage, we propose a new concept: The Greenhouse gas (GHG) Emission Timeline. The concept is derived from researching robustness assessment methods and personal experiences from teaching. Rather than aggregating environmental aspects into a single number, with the Timeline we want to highlight the temporality ...Conference Paper -
Assessing the impact of morphed CMIP6 climate model outputs on building energy performance simulations
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Optimization at Building & Urban ScaleIn this paper we utilise the latest generation of climate change models from Climate Model Intercomparison Project 6 (CMIP6) to morph typical meteorological year (TMY) weather files. These morphed files are used in conjunction with a standard set of reference models for the climate zones in the United States. Building energy demand, comfort, and photovoltaic (PV) yield are all simulated and evaluated for how they can be expected to change ...Conference Paper -
Estimating surface utilization factors for BIPV applications using pix2pix on street captured façade images
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Renewable EnergyWhile techniques for assessing solar potential, particularly on roofs, are well-established, estimating solar potential on building facades often requires more work due to the complexity of urban features and the elaborate design of building facades. Existing methods to assess the solar potential of building facades often neglect the characteristics of individual facades. This study presents an image-based method for a more accurate ...Conference Paper -
Do we need a saw? Carbon-based analysis of facade BIPV performance under partial shading from nearby trees
(2023)Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Renewable EnergyBuilding integrated photovoltaics (BIPV) are becoming more common in urban spaces. The impact of shading from nearby trees on BIPV performance and the potential conflict between the carbon sequestration benefits of trees and the carbon mitigation benefits of BIPV is not well documented in research. Therefore, this paper investigates the cost-benefit relationship of the carbon storage potential of trees vs. their shading effects on a nearby ...Conference Paper