WP3 | reation and Validation of Integrated Building Performance Model
The Work Package 3, "Creation and Validation of Integrated Building Performance Model" is coordinated by Shady Attia (Professor and the head of Sustainable Building Design (SBD) lab at the University of Liege) and Ramin Rahif (PhD student and research assisstant at SBD Lab).
n WP 3, the effects of increased temperature on the indoor environmental performance and energy consumption of buildings will be evaluated and validated through benchmark case studies. For this aim, a typological classification of Belgian residential buildings will be established based on the Energy Performance Building Directive (EPBD). A distinction will be made between the new and existing buildings. A long-term measurement camapaign is ongoing to monitor the outdoor and indoor environmental parameters in a group of case studies. Building Energy Simulation (BES), Building Envelope Heat and Moiture transfer (BEHAM) analysis, and Compuational Fluid dynamics (CFD) analysis will be performed as modelling techniques in buildings with and without adaptation measures. The measurement will allow validating the multi-level simulation model via running the whole modelling chain and validating the modelling outputs using the real-time and forecast climate scenarios.
The methodology includes model application for evaluation of adaptation measures, for the buildings in the typological classification and for different meteorological data sets based on different climate scenarios. The results are a sensitivity classification of buildings and indication of the related indoor environmental conditions and energy performance. As the main deliverables of Work Package 3, a guideline will be made available to the public to be able to estimate the future overheating effects of climate change. Also, an overheating toolkit will be created containing information (risks and adaptation measures) of hot weather conditions. The purpose of the toolkit is to support and communicate the health risks that occur during the heatwave events and what can be done to mitigate the overheating impacts and associated health hazards.
The main objectives of the Work Package 3 are :
- Reviewing and identifying the thermal comfort models and overheating indicators.
- Typological classification of Belgian residential buildings and establising the benchmark models for old and new dwellings..
- Long-term monitoring of indoor and outdoor environmental parameters.
- Numerical study via BES-CFD-BEHAM to estimate the future thermal performance of the buildings using provided weather and air pollution data.
- Uncertainity and sensitivity analysis to validate the numerical modellings.
- Developing a guideline and a toolkit to show the effects of overheating on the buildings and how adaptation measures can be useful in mitigating the overheating risks..
The central research questions are :
- What are the likely impacts of climate change on the sensitivity and vulnerability of the indoor environmental and energy performance of existing and newly constructed buildings in Wallonia?
- When, where and to what extent will buildings adaptation measure be needed?
These research questions can be broken down into the following specific questions:
- What is overheating and how to define overheating indicators?
- What are the most typical and representative newly constrcuted and old dwellings in Belgium?
- What is the trend of real indoor environmental parameters during a year?
- How to model the impacts of climate change on indoor environmental parameters in benchmark case studies?
- How accurately the monitored data are reflected in the modelling outputs?
- How to make the community to be aware of the impacts of climate change and associated health hazards?