A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Extending the adaptive thermal comfort models for courtyards
https://orcid.org/0000-0002-2039-1307
https://orcid.org/0000-0003-1929-3280
Abstract Temperatures in Mediterranean cities are rising due to the effects of climate change, with a consequent increase in the heat waves frequency. Recent research has shown the tempering potential of semi-outdoor spaces such as courtyards, which are semi-enclosed spaces that are widely used by the users of buildings in Mediterranean cities. International standards addressing thermal comfort parameters provide technical guidelines for indoor spaces only. Expanding this concept, this paper focuses on the potential to extend and interpret the existing calculation models for indoor thermal comfort, EN 16798 and ASHRAE 55, to determine thermal comfort, monitoring two different courtyards in Cordoba, Spain, during both typical summer and heat wave periods. The results show that during the typical summer, the monitored courtyards can reach temperatures up to 8.4 °C cooler than outside. Subsequently can be considered to be in thermal comfort on average for 88% of the time according to EN 16798, and 75% according to ASHRAE 55, which drop to 71% and 52% respectively during heat wave (HW) periods, in spite of increasing thermal gap (TG) up to 13.9 °C. The results are also compared with the PET indicator used for evaluation of outdoor thermal comfort, which provides comparable figures: 81% summer and 73% HW. Implications of implementing passive shading strategies to increase comfort in these transition spaces are also evaluated. The research highlights the thermal potential and usefulness of courtyards in warm climates, so they can ultimately be included in the building analysis as a potentially comfortable and habitable space.
Highlights Courtyard was included in the building analysis as a comfortable and habitable space. Comfort adaptive assessment according to EN 16798, ASHRAE 55 and PET were confronted. Courtyard tempering achieves a TG up to 8.4 °C in summer and 13.9 °C in a heatwave. In warm locations, courtyards can be under comfort more than 75% of the day. Shadow quantification proves to be a major strategy regarding extreme temperatures.
Extending the adaptive thermal comfort models for courtyards
https://orcid.org/0000-0002-2039-1307
https://orcid.org/0000-0003-1929-3280
Abstract Temperatures in Mediterranean cities are rising due to the effects of climate change, with a consequent increase in the heat waves frequency. Recent research has shown the tempering potential of semi-outdoor spaces such as courtyards, which are semi-enclosed spaces that are widely used by the users of buildings in Mediterranean cities. International standards addressing thermal comfort parameters provide technical guidelines for indoor spaces only. Expanding this concept, this paper focuses on the potential to extend and interpret the existing calculation models for indoor thermal comfort, EN 16798 and ASHRAE 55, to determine thermal comfort, monitoring two different courtyards in Cordoba, Spain, during both typical summer and heat wave periods. The results show that during the typical summer, the monitored courtyards can reach temperatures up to 8.4 °C cooler than outside. Subsequently can be considered to be in thermal comfort on average for 88% of the time according to EN 16798, and 75% according to ASHRAE 55, which drop to 71% and 52% respectively during heat wave (HW) periods, in spite of increasing thermal gap (TG) up to 13.9 °C. The results are also compared with the PET indicator used for evaluation of outdoor thermal comfort, which provides comparable figures: 81% summer and 73% HW. Implications of implementing passive shading strategies to increase comfort in these transition spaces are also evaluated. The research highlights the thermal potential and usefulness of courtyards in warm climates, so they can ultimately be included in the building analysis as a potentially comfortable and habitable space.
Highlights Courtyard was included in the building analysis as a comfortable and habitable space. Comfort adaptive assessment according to EN 16798, ASHRAE 55 and PET were confronted. Courtyard tempering achieves a TG up to 8.4 °C in summer and 13.9 °C in a heatwave. In warm locations, courtyards can be under comfort more than 75% of the day. Shadow quantification proves to be a major strategy regarding extreme temperatures.
Extending the adaptive thermal comfort models for courtyards
https://orcid.org/0000-0002-2039-1307
https://orcid.org/0000-0003-1929-3280
Abstract Temperatures in Mediterranean cities are rising due to the effects of climate change, with a consequent increase in the heat waves frequency. Recent research has shown the tempering potential of semi-outdoor spaces such as courtyards, which are semi-enclosed spaces that are widely used by the users of buildings in Mediterranean cities. International standards addressing thermal comfort parameters provide technical guidelines for indoor spaces only. Expanding this concept, this paper focuses on the potential to extend and interpret the existing calculation models for indoor thermal comfort, EN 16798 and ASHRAE 55, to determine thermal comfort, monitoring two different courtyards in Cordoba, Spain, during both typical summer and heat wave periods. The results show that during the typical summer, the monitored courtyards can reach temperatures up to 8.4 °C cooler than outside. Subsequently can be considered to be in thermal comfort on average for 88% of the time according to EN 16798, and 75% according to ASHRAE 55, which drop to 71% and 52% respectively during heat wave (HW) periods, in spite of increasing thermal gap (TG) up to 13.9 °C. The results are also compared with the PET indicator used for evaluation of outdoor thermal comfort, which provides comparable figures: 81% summer and 73% HW. Implications of implementing passive shading strategies to increase comfort in these transition spaces are also evaluated. The research highlights the thermal potential and usefulness of courtyards in warm climates, so they can ultimately be included in the building analysis as a potentially comfortable and habitable space.
Highlights Courtyard was included in the building analysis as a comfortable and habitable space. Comfort adaptive assessment according to EN 16798, ASHRAE 55 and PET were confronted. Courtyard tempering achieves a TG up to 8.4 °C in summer and 13.9 °C in a heatwave. In warm locations, courtyards can be under comfort more than 75% of the day. Shadow quantification proves to be a major strategy regarding extreme temperatures.
Extending the adaptive thermal comfort models for courtyards
Diz-Mellado, Eduardo (author) / López-Cabeza, Victoria Patricia (author) / Rivera-Gómez, Carlos (author) / Galán-Marín, Carmen (author) / Rojas-Fernández, Juan (author) / Nikolopoulou, Marialena (author)
Building and Environment ; 203
2021-06-23
Article (Journal)
Electronic Resource
English
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