Development of reference summer weather years for analysis of overheating risk in buildings

Laouadi, Abdelaziz; Gaur, Abhishek; Lacasse, Michael A.; Bartko, Michal; Armstrong, M. M.

doi:10.1080/19401493.2020.1727954

Cited by 25 publications

(12 citation statements)

References 49 publications

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“…Overheating in buildings during sweltering weather conditions has become one of the main concerns in many countries (Eames, 2016;Laouadi et al, 2020). High indoor temperatures have significant impacts on occupant productivity, comfort, and health (Tanabe et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Climate change sensitive overheating assessment in dwellings: a case study in Belgium

Rahif

Fani²,

Kosiński

et al. 2021

Building Simulation Conference Proceedings

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Due to the current rate of global warming, overheating in buildings is expected to be more frequent and intense in future climates. High indoor temperature affects occupant productivity, comfort, and health. Thus, it is necessary to predict the thermal performance of buildings concerning climate change. This paper applies a climate change sensitive overheating assessment method to a lightweight timber house in Eupen, Belgium. Three metrics are used, namely Indoor Overheating Degree (𝐼𝑂𝐷), Ambient Warmness Degree (𝐴𝑊𝐷), and Building Climate Vulnerability Factor (𝐵𝐶𝑉𝐹). The overheating risk is assessed under four climate scenarios representing historical and future scenarios using dynamic simulation tool EnergyPlus v9.0. This method accounts for overheating severity and frequency, considering zonal occupancy profiles and thermal comfort models. The results indicate BCVF<1 for the Passive House case study showing its high potential in suppressing the outdoor thermal stress in the long-term. Finally, the increase in ventilation rate proves to be an adequate measure by decreasing the zonal peak temperatures up to 10℃ and indoor overheating risk by ~60%. Key Innovations• Warm discomfort during the heating period is contained within the overheating analysis • Lower base temperature for calculation of AWD is considered • Climate change-sensitive overheating assessment is applied on a high-performance building in the Belgian context Practical ImplicationsThis paper provides a basis for the field experts in climateresilient building design. It makes them aware of expected overheating risks in future climates and consider adaptation strategies in early-design stages.

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Section: Introductionmentioning

confidence: 99%

Climate change sensitive overheating assessment in dwellings: a case study in Belgium

Rahif

Fani²,

Kosiński

et al. 2021

Building Simulation Conference Proceedings

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“…These factors are subjective, therefore not possible to reliably quantify through an index. SET * index gives a robust and validated reference point upon which other considerations can be factored in during the design process (Laouadi et al, 2020).…”

Section: Figurementioning

confidence: 99%

Urban climate forecasts: From risk to resilience. Milan Innovation District's key design aspects for buildings and infrastructures

Boschi¹

2023

Front. Clim.

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Climate-related transitional and physical risks are relevant to the building industry. This paper focuses on the physical risk as mitigated and embedded into the design of buildings and infrastructures at the Milan Innovation District (MIND). MIND is an Italian development piloting the transition to resilient green urban planning. This paper discusses the methodology adopted at the early stages of urban and building design to assess the local climate change risks and impacts to be mitigated. As per the Intergovernmental Panel on Climate Change (IPCC) and the climate change scenarios are based on projected temperature changes under representative concentration pathways (RCPs). The scenarios considered are 4.5 and 8.5. Climate projections are from the World Bank Change Knowledge Portal and the projected epw Weatherfiles for Milano Linate. These were generated using IES and Weathershift™ tool. The analysis focused on the temperature raise including the masterplan sunlight analysis, the spatial thermal comfort analysis, and the climate change visualization. Results show that the risk of overheating increases. These were discussed in climate change adaptation and resilience planning workshops with a broad range of stakeholders to identify key strategies and functional distribution de-risking strategies. Climate change poses a significant risk to society and resiliency and decarbonization priorities may differ by region. Although, This paper proposes a replicable high-level assessment that can help developers and business leaders in mapping and mitigate the climate capital-related downside risks that have a material impact on their business overall risk profile and capital adequacy.

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“…Consequently, the number of heat-related mortalities are magnified in urban regions [14]. Vulnerable populations to heat stress encompass older individuals (aged 65+), children (under 15), those with pre-existing health conditions or medications affecting thermoregulation, individuals of low socioeconomic status, and physically active individuals engaged in outdoor activities [15]. Urban heat waves pose a major risk to the general public's health and welfare.…”

Section: Uhi Causes and Effectsmentioning

confidence: 99%

Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review

Ziaeemehr,

Jandaghian,

et al. 2023

Buildings

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The Urban Heat Island (UHI), a consequence of urban development, leads to elevated temperatures within cities compared to their rural counterparts. This phenomenon results from factors such as urban designs, anthropogenic heat emissions, and materials that absorb and retain solar radiation in the built environment. Materials commonly used in cities, like concrete, asphalt, and stone, capture solar energy and subsequently emit it as heat into the surroundings. Consequently, this phenomenon amplifies summertime cooling energy demands in buildings. To mitigate the UHI impacts, various mitigation strategies have emerged that include but are not limited to using higher solar reflectivity materials, known as “cool materials”, and increasing vegetation and greenery in urban areas. Cool materials have high reflectivity and emissivity, effectively reflecting solar radiation while emitting absorbed heat through radiative cooling. Increasing the solar reflectivity of building envelope materials is a promising sustainable solution to lessen the UHI effects. This state-of-the-art review summarizes the UHI causes and effects, states the mitigation strategies, describes the cool building envelope materials, explains the solar reflectivity index measurements, indicates the building and micro-climate simulations, highlights the performance evaluation of using cool building envelope materials, points out the research gaps, and proposes future research opportunities.

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Development of reference summer weather years for analysis of overheating risk in buildings

Cited by 25 publications

References 49 publications

Climate change sensitive overheating assessment in dwellings: a case study in Belgium

Climate change sensitive overheating assessment in dwellings: a case study in Belgium

Urban climate forecasts: From risk to resilience. Milan Innovation District's key design aspects for buildings and infrastructures

Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review

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