Theoretical fragility curves − A novel approach to assess heat vulnerability of residential buildings

Szagri, Dóra; Szalay, Zsuzsa

doi:10.1016/j.scs.2022.103969

Cited by 7 publications

(6 citation statements)

References 77 publications

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“…In this case, the air temperature data per room are used to determine the severity of the overheating. The applied limit value of 26 • C is included as a threshold value for summer overheating in the regulations of several countries, including Hungary [8]. It can be seen that the measured values are similar from room to room, with slightly larger differences in temperature between the living room and the small bedroom.…”

Section: Evaluation Of Measurement Resultsmentioning

confidence: 96%

“…In this case, the air temperature data per room are used to determine the severity of the overheating. The applied limit value of 26 °C is included as a threshold value for summer overheating in the regulations of several countries, including Hungary [8].…”

Section: Evaluation Of Measurement Resultsmentioning

confidence: 99%

“…The vast majority of these buildings only contain a 5-8 cm insulation layer in the reinforced concrete large panel system which is now significantly aged and deteriorated, has not undergone in-depth renovation [3], and is considered outdated from an energy performance point of view. One of the consequences of climate change is an increase in the frequency of extreme weather events [4,5], such as the intensity and frequency of summer heatwaves [6,7], which may pose an even greater risk to panel dwellings [8]. Additionally, a study [9] showed that 10-storey housing blocks made of prefabricated reinforced concrete panels are among the most endangered building types in terms of climate vulnerability.…”

Section: Introductionmentioning

confidence: 99%

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Wireless Temperature, Relative Humidity and Occupancy Monitoring System for Investigating Overheating in Buildings

Szagri

Dobszay²,

Nagy

et al. 2022

Sensors

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With the climate change we are experiencing today, the number and intensity of heatwaves are increasing dramatically, significantly impacting our buildings’ overheating. The majority of the prefabricated concrete panel buildings in Hungary are considered outdated from an energy point of view. These buildings may be at greater risk from extreme weather events. To examine this, long-term monitoring measurements are needed. Therefore, we developed a unique, reliable, and cost-effective wireless monitoring system, which can track in real time the indoor air quality data (temperature, relative humidity, CO2) of the investigated apartment building, as well as users’ habits, such as resident presence, window opening, and blind movement. The data were used to analyse and quantify the summer overheating of the dwelling and user habits. The measurements showed that the average temperature in all rooms was above 26 °C, and there were several occasions when the temperature exceeded 30 °C. Overheating in apartment buildings in summer is a significant problem that needs to be addressed. Further investigation of ventilation habits will help develop favourable ventilation strategies, and using these measurements in dynamic simulations will also help improve the models’ validity for further studies.

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Section: Evaluation Of Measurement Resultsmentioning

confidence: 96%

Section: Evaluation Of Measurement Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wireless Temperature, Relative Humidity and Occupancy Monitoring System for Investigating Overheating in Buildings

Szagri

Dobszay²,

Nagy

et al. 2022

Sensors

Self Cite

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“…When evaluating summer overheating within homes, the exceedance of fixed absolute values is generally used [37,38]. The overheating criterion is usually defined at 26 • C most cases [39,40]; CIBSE (Chartered Institution of Building Services Engineers) indicates that bedroom temperature should be maximized at 26 • C since sleep quality and thermal comfort decrease when the temperature rises above 24 • C [36].…”

Section: Summer Overheating-odhmentioning

confidence: 99%

“…Further research dealing with the microclimate of cities taking account of artificial surfaces and the evapotranspiration of vegetation needs to be carried out to create more specific, synthetic climate data: indeed, the TMY files used in this research are general locations, usually far from the areas affected by urban heat islands. In the city, the location and typology of a building are huge contributors to its overheating potential as described and demonstrated in [38].…”

Section: Thermal Comfort-pmvmentioning

confidence: 99%

The Effect of European Climate Change on Indoor Thermal Comfort and Overheating in a Public Building Designed with a Passive Approach

2022

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Dynamic building energy performance modeling is becoming increasingly important in the architectural, engineering, and construction (AEC) industry because of the sector’s significant environmental impact. For such analysis, a climate file representing a typical meteorological year (TMY) is needed, including hourly values for the most important weather-related parameters. However, TMY shows little resemblance to the future of the particular location where a building has been used for decades. Therefore, using predicted future climates during building design is unfortunately rarely practiced, potentially undermining the strategies that should be the fundamental basis of the design. To explore this question, our study compared the heating and cooling energy consumption, indoor thermal comfort, and summer overheating potential of a selected building for three distinctive European climates, in Hungary, Portugal, and Lithuania. All of them were changed according to the IPCC RCP4.5 scenario, and were examined for the present, the 2050, and the 2100 scenarios. We also tested adaptive clothing to evaluate the indoor comfort parameters. The results show a 10% increase in heating and cooling energy use for the same construction and location between 2020 and 2100. The continental climate of Budapest is the most threatened by summer overheating, with an increase of 69% for the ODH26 indicator. A more balanced warming for Lisbon was found (23%), and moderate changes for the city of Kaunas (a 153% increase from a very low baseline).

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Mixed approach to assess urban sustainability and resilience – A spatio-temporal perspective

Buzási¹,

Jäger²,

Hortay³

2022

City and Environment Interactions

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Theoretical fragility curves − A novel approach to assess heat vulnerability of residential buildings

Cited by 7 publications

References 77 publications

Wireless Temperature, Relative Humidity and Occupancy Monitoring System for Investigating Overheating in Buildings

Wireless Temperature, Relative Humidity and Occupancy Monitoring System for Investigating Overheating in Buildings

The Effect of European Climate Change on Indoor Thermal Comfort and Overheating in a Public Building Designed with a Passive Approach

Mixed approach to assess urban sustainability and resilience – A spatio-temporal perspective

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