Assessing and mitigating overheating risk in existing Canadian school buildings under extreme current and future climates

Baba, Fuad Mutasim; Ge, Hua; Wang, Liangzhu; Zmeureanu, Radu

doi:10.1016/j.enbuild.2022.112710

Cited by 17 publications

(5 citation statements)

References 31 publications

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“…Sailor et al [20] simulated that indoor temperatures without air conditioning would exceed 40 • C in two warm US cities (Chicago, Illinois, and Houston, Texas) in 2050. Baba et al [21] simulated a school in Montreal, Canada, discovering that, without mitigation measures, classroom overheating hours would increase to 333 and 437 h by 2044 and 2090, respectively. Baglivo et al [22] found that, from 2020 to 2080, the hours worked in temperatures higher than 26 • C in apartments in Lecce, Italy, had increased by around 16% while the external temperature increased by 11%.…”

Section: Literature Reviewmentioning

confidence: 99%

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

et al. 2023

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Due to global temperature increases, terraced house (TH) residents face a threat to their health due to poor indoor thermal environments. As buildings are constructed by low-income residents without professional guidance, this study aims to investigate the indoor thermal comfort and energy resilience of THs under the future climate and determine the optimal passive design strategies for construction and retrofitting. By exploring the effects of building envelope structures, adjusting the window-to-wall ratio (WWR) and designing shading devices, EnergyPlus version 22.0 was used to optimize the thermal environment and cooling load of THs throughout their life cycle under future climate uncertainties. Unimproved THs will experience overheating for nearly 90% of the hours in a year and the cooling load will exceed 60,000 kWh by 2100 under the Representative Concentration Pathways (RCP) 8.5 scenario. In contrast, optimization and improvements resulted in a 17.3% reduction in indoor cooling load by increasing shading devices and the WWR, and using building envelope structures with moderate thermal insulation. This study can guide TH design and renovation, significantly reducing indoor cooling load and enabling residents to better use active cooling to combat future overheating environments.

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Section: Literature Reviewmentioning

confidence: 99%

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

et al. 2023

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“…The risk of overheating in school buildings should also not be underestimated [16]. Simulations of schools by Fuad Mutasim Baba [17] showed that classrooms had overheated for more than 110 h in the summer of 2020. Sara Mohamed [18], who observed two schools in the UK, found that most classrooms experienced overheating for more than 40% of the school day.…”

Section: Overheating In Severe Cold Regions Of Chinamentioning

confidence: 99%

“…There are two main types of measures to mitigate summer overheating: active interventions in building systems, such as ventilation systems, and passive performance optimisation of buildings, including modifications to the performance of the building envelope [28][29][30], natural ventilation [31][32][33], and shading devices [17,22,34]. Controlling solar gain can be effective in reducing overheating in summer.…”

Section: Integrated Shading Devicesmentioning

confidence: 99%

“…Under the static threshold standard, overheating was significant, but few rooms violated the adaptive standard. Fuad Mutasim Baba et al [17] also showed in their survey of schools that the adaptive standard is more accurate than the old static threshold overheating standard in terms of students' thermal sensation. This article also explains the differences between static and adaptive methods.…”

Section: Overheating Risk In University Buildingsmentioning

confidence: 99%

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Assessing the Potential of Integrated Shading Devices to Mitigate Overheating Risk in University Buildings in Severe Cold Regions of China: A Case Study in Harbin

Qin,

Liu,

et al. 2023

Energies

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Creating a comfortable indoor environment in education buildings is an important design objective. Climate change has resulted in rising summer indoor temperatures in the severe cold regions of China, and evidence of summer overheating risk in these regions has not yet been fully investigated. This study presents evidence of overheating in a university building in a severe cold region of China, discusses the potential of integrated shading devices for mitigating overheating, and proposes design ideas for the application of shading devices. Temperature monitoring and simulation were performed in a university building with natural ventilation located in Harbin, and various configurations of integrated shading devices were simulated using IES Virtual Environment software. The results demonstrate that 69% of classrooms were overheated; furthermore, south-facing classrooms could be overheated for up to 152 h during summer occupancy hours. This study finds that integrated shading devices reduce overheating hours by up to 59.2%. The design of appropriate parameters for shading devices can effectively improve indoor thermal comfort while maintaining daylight levels and controlling the increase in energy consumption. The methodology and results presented in this study offer a reference point and practical guidance for mitigating regional overheating, aiming to promote the improvement of regional standards and optimisation of thermal environments in the severe cold regions of China.

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“…Another research from Gao et al, have investigated the influence of the climate change in a newly retrofitted office building in Chengdu, and proposed an approach for energy efficiency measurements under future climate for individual buildings [10]. Apart from the above, other studies have been implemented for the mitigation of climate change and the adaptation of the building stock to it, to existing office buildings and schools [11], [12]. However, some other research studies have been done for the residential building stock.…”

Section: Introductionmentioning

confidence: 99%

Impact of Climate Change on the Heating Demand of Buildings. A District Level Approach

Apostolopoulou,

Jimenez-Bescos,

Cavazzi

et al. 2023

Environmental and Climate Technologies

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There is no doubt that during recent years, the developing countries are in urgent demand of energy, which means the energy generation and the carbon emissions increase accumulatively. The 40 % of the global energy consumption per year comes from the building stock. Considering the predictions regarding future climate due to climate change, a good understanding on the energy use due to future climate is required. The aim of this study was to evaluate the impact of future weather in the heating demand and carbon emissions for a group of buildings at district level, focusing on two areas of London in the United Kingdom. The methodological approach involved the use of geospatial data for the case study areas, processed with Python programming language through Anaconda and Jupyter notebook, generation of an archetype dataset with energy performance data from TABULA typology and the use of Python console in QGIS to calculate the heating demand in the reference weather data, 2050 and 2100 in accordance with RCP 4.5 and RCP 8.5 scenarios. A validated model was used for the district level heating demand calculation. On the one hand, the results suggest that a mitigation of carbon emissions under the RCP4.5 scenario will generate a small decrease on the heating demand at district level, so slightly similar levels of heating generation must continue to be provided using sustainable alternatives. On the other hand, following the RCP 8.5 scenario of carbon emission carrying on business as usual will create a significant reduction of heating demand due to the rise on temperature but with the consequent overheating in summer, which will shift the energy generation problem. The results suggest that adaptation of the energy generation must start shifting to cope with higher temperatures and a different requirement of delivered energy from heating to cooling due to the effect of climate change.

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Assessing and mitigating overheating risk in existing Canadian school buildings under extreme current and future climates

Cited by 17 publications

References 31 publications

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

Assessing the Potential of Integrated Shading Devices to Mitigate Overheating Risk in University Buildings in Severe Cold Regions of China: A Case Study in Harbin

Impact of Climate Change on the Heating Demand of Buildings. A District Level Approach

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