IEA EBC Annex 80 - Dynamic simulation guideline for the performance testing of resilient cooling strategies: Version 2

The objective of Annex 80 is to develop, assess and communicate solutions for resilient cooling. The systematic assessment of resilient cooling strategies is one of the main activities of Annex 80. The previous approach for assessing the resilience of cooling strategies is mainly based on qualitative comparison and based on results from individual research, which lacks common boundary conditions and universal indicators for resilience evaluation. This study aims to provide a consistent approach for assessing the resilience of different cooling strategies by dynamic simulation. Various cooling strategies will be tested on the reference buildings under present and future weather conditions in different climate zones, and proposed key performance indicators will be applied to evaluate summertime overheating risk and climate resistance of cooling strategies.02IEA Annex 80 – Resilient Cooling of Building

Typical and extreme weather datasets for studying the resilience of buildings to climate change and heatwaves

peer reviewedWe present unprecedented datasets of current and future projected weather files for building simulations in 15 major cities distributed across ten climate zones worldwide. The datasets include ambient air temperature, relative humidity, atmospheric pressure, direct and diffuse solar irradiance, and wind speed at hourly resolution, which are essential climate elements needed to undertake building simulations. The datasets contain typical and extreme weather years in the EnergyPlus weather file (EPW) format and multiyear projections in comma-separated value (CSV) format for three periods: historical (2001-2020), future mid-term (2041-2060), and future long-term (2081-2100). The datasets were generated from projections of one regional climate model, which were bias-corrected using multiyear observational data for each city. The methodology used makes the datasets among the first to incorporate complex changes in the future climate for the frequency, duration, and magnitude of extreme temperatures. These datasets, created within the IEA EBC Annex 80 “Resilient Cooling for Buildings”, are ready to be used for different types of building adaptation and resilience studies to climate change and heatwaves.11. Sustainable cities and communitie

FICHIERS MÉTÉOROLOGIQUES DE VAGUES DE CHALEUR FUTURES POUR ÉVALUER LA RÉSILIENCE THERMIQUE DES BÂTIMENTS AU CHANGEMENT CLIMATIQUE

International audienceThis paper proposes a methodology to reconstruct meteorological files to be used as input data for building simulations and focused on extreme future heatwaves. Built from CORDEX data, these files have been developed for twelve cities around the world, distributed according to the ASHRAE zone classification. These weather files will be useful to compare different cooling solutions and analyze the building thermal resilience to overheating in future extreme periods.Cet article présente une méthodologie développée pour reconstituer des fichiers météorologiques comprenant des vagues de chaleur futures extrêmes comme données d'entrée pour les simulations thermiques dynamiques de bâtiments. Des fichiers ont été développés pour douze villes dans le monde, réparties selon la classification des zones de l'ASHRAE à partir de données CORDEX. Ces fichiers météorologiques peuvent être utilisés pour comparer différentes solutions de rafraîchissement et analyser la résilience thermique du bâtiment à la surchauffe dans des périodes extrêmes futures

FICHIERS MÉTÉOROLOGIQUES DE VAGUES DE CHALEUR FUTURES POUR ÉVALUER LA RÉSILIENCE THERMIQUE DES BÂTIMENTS AU CHANGEMENT CLIMATIQUE

International audienceThis paper proposes a methodology to reconstruct meteorological files to be used as input data for building simulations and focused on extreme future heatwaves. Built from CORDEX data, these files have been developed for twelve cities around the world, distributed according to the ASHRAE zone classification. These weather files will be useful to compare different cooling solutions and analyze the building thermal resilience to overheating in future extreme periods.Cet article présente une méthodologie développée pour reconstituer des fichiers météorologiques comprenant des vagues de chaleur futures extrêmes comme données d'entrée pour les simulations thermiques dynamiques de bâtiments. Des fichiers ont été développés pour douze villes dans le monde, réparties selon la classification des zones de l'ASHRAE à partir de données CORDEX. Ces fichiers météorologiques peuvent être utilisés pour comparer différentes solutions de rafraîchissement et analyser la résilience thermique du bâtiment à la surchauffe dans des périodes extrêmes futures

A Methodology for Assembling Future Weather Files Including Heatwaves for Building Thermal Simulations from the European Coordinated Regional Downscaling Experiment (EURO-CORDEX) Climate Data

With increasing mean and extreme temperatures due to climate change, it becomes necessary to use—not only future typical conditions—but future heatwaves in building thermal simulations as well. Future typical weather files are widespread, but few researchers have put together methodologies to reproduce future extreme conditions. Furthermore, climate uncertainties need to be considered and it is often difficult due to the lack of data accessibility. In this article, we propose a methodology to re-assemble future weather files—ready-to-use for building simulations—using data from the European Coordinated Regional Downscaling Experiment (EURO-CORDEX) dynamically downscaled regional climate multi-year projections. It is the first time that this database is used to assemble weather files for building simulations because of its recent availability. Two types of future weather files are produced: typical weather years (TWY) and heatwave events (HWE). Combined together, they can be used to fully assess building resilience to overheating in future climate conditions. A case study building in Paris is modelled to compare the impact of the different weather files on the indoor operative temperature of the building. The results confirm that it is better to use multiple types of future weather files, climate models, and or scenarios to fully grasp climate projection uncertainties

Conceptualising a resilience cooling system: a socio-technical approach

Prolonged and/or extreme heat has become a natural hazard that presents a significant risk to humans and the buildings, technologies, and infrastructure on which they have previously relied on to provide cooling. This paper presents a conceptual model of a resilient cooling system centred on people, the socio-cultural-technical contexts they inhabit, and the risks posed by the temperature hazard. An integrative literature review process was used to undertake a critical and comprehensive evaluation of published research and grey literature with the objective of adding clarity and detail to the model. Two databases were used to identify risk management and natural hazard literature in multiple disciplines that represent subcomponents of community resilience (social, economic, institutional, infrastructure and environment systems). This review enabled us to characterise in more detail the nature of the temperature hazard, the functionality characteristics of a resilient cooling system, and key elements of the four subsystems: people, buildings, cooling technologies and energy infrastructure. Six key messages can be surmised from this review, providing a guide for future work in policy and practice

Typical and extreme weather datasets for studying the resilience of buildings to climate change and heatwaves

We present unprecedented datasets of current and future projected weather files for building simulations in 15 major cities distributed across 10 climate zones worldwide. The datasets include ambient air temperature, relative humidity, atmospheric pressure, direct and diffuse solar irradiance, and wind speed at hourly resolution, which are essential climate elements needed to undertake building simulations. The datasets contain typical and extreme weather years in the EnergyPlus weather file (EPW) format and multiyear projections in comma-separated value (CSV) format for three periods: historical (2001-2020), future mid-term (2041-2060), and future long-term (2081-2100). The datasets were generated from projections of one regional climate model, which were bias-corrected using multiyear observational data for each city. The methodology used makes the datasets among the first to incorporate complex changes in the future climate for the frequency, duration, and magnitude of extreme temperatures. These datasets, created within the IEA EBC Annex 80 "Resilient Cooling for Buildings", are ready to be used for different types of building adaptation and resilience studies to climate change and heatwaves