On the impact of innovative materials on outdoor thermal comfort of pedestrians in historical urban canyons

被引:90
作者
Rosso, Federica [1 ]
Golasi, Iacopo [2 ]
Castaldo, Veronica Lucia [3 ,4 ]
Piselli, Cristina [3 ]
Pisello, Anna Laura [3 ,4 ]
Salata, Ferdinando [2 ]
Ferrero, Marco [1 ]
Cotana, Franco [3 ,4 ]
Vollaro, Andrea de Lieto [2 ]
机构
[1] Sapienza Univ Rome, Dept Civil Construct & Environm Engn, Via Eudossiana 18, I-00184 Rome, Italy
[2] Sapienza Univ Rome, Dept Astronaut Elect & Energy Engn, Via Eudossiana 18, I-00184 Rome, Italy
[3] CIRIAF Interuniv Res Ctr Pollut & Environm Mauro, Via Duranti 67, I-06125 Perugia, Italy
[4] Univ Perugia, Dept Engn, Via Duranti 63, I-06125 Perugia, Italy
关键词
Urban canyon; Cool material; Solar energy; Pedestrians' outdoor thermal comfort; Microclimate simulation; Historical district; Energy efficiency in buildings; MEAN RADIANT TEMPERATURE; HEAT-ISLAND MITIGATION; OPTICAL-PROPERTIES; STREET CANYONS; AIR-QUALITY; MICROCLIMATE; STRATEGIES; ALBEDO; HOT; BEHAVIOR;
D O I
10.1016/j.renene.2017.11.074
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Urban heat island is an anthropogenic phenomenon affecting urban outdoor thermal comfort conditions and energy utilization. This is even truer in urban canyon configurations, characterized by low sky view factor and where the effect of short-wave and long-wave solar radiation on construction surfaces is able to produce massive outdoor local overheating. Traditional solutions cannot always be applied in urban historical canyons, where the exteriors of buildings cannot be modified due to preservation. Here, the capability of innovative cool materials to mitigate local microclimate of historical urban canyons is investigated. A preliminary experimental characterization of the materials is performed. A numerical simulation of the microclimate effect generated by the application of such materials is performed. Results show that the proposed materials improve the microclimate without neglecting preservation constrains. Such materials set the best scenarios in terms of thermal comfort, by enhancing albedo on canyon surfaces. Their application on the vertical surfaces of narrow canyons can lead to deleterious effects on outdoor thermal comfort. Such findings are confirmed by PMV and MOCI analyses. Energy efficiency solutions may be effectively implemented in historical districts, opening the doors to other tailored solutions, such as integrated renewables, to make these environments more sustainable and comfortable. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:825 / 839
页数:15
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