Experimental case study on the effect of the urban morphology on urban microclimate and outdoor thermal comfort
Abstract
The present study aims at testing the influence of the urban morphology on the external weather conditions and the urban microclimate by treating quantitative aspects of the outdoor thermal comfort. This is based on a site investigation aims at studying the correlation between the geometry of the street, its orientation and the evolution of the physical variables: air temperature (Ta), Mean Radiant Temperature (MRT), Relative Humidity (RH), Wind speed (Ws). The measures were the subject of a campaign carried out in the urban fabric of the ksar of the red village in the wilaya of Biskra in Algeria. The objective is to define the most efficient urban geometry in term of summer thermal comfort by studying the real impacts of the urban form on the solar control and microclimatic conditions. The evaluation of the thermal comfort in these external spaces is carried out by analyzing physiologically equivalent temperature (PET) values calculated by Rayman Pro 2.1 software based on the measured microclimatic parameters.
References
Ahmed Ouameur, F. (2007). Morphologie urbaine et confort thermique dans les espaces publics « Étude comparative entre trois tissus urbains de la ville de Québec». Mémoire pour l'obtention du grade de Maître en Sciences. Université Laval, Québec.
Ali-Toudert, F., Djenane, M., Bensalem, R., Mayer, H. (2005-a). Outdoor thermal comfort in the old desert city of Beni-Isguen, Algeria, Climate Research, 28(3): 243-256.
Ali-Toudert, F., Mayer, H., (2005-b), Numerical study on the effects of aspect ratio and orientation of an urban street canyon on outdoor thermal comfort in hot and dry climate, Building and Environment, 41(2): 94–108.
Bourbia, F., Awbi, H., (2004), Building cluster and shading in urban canyon for hot dry climate, part 1: Air and surface temperature measurements, Renewable Energy, 29(2): 249-262.
Boussoualim, A., (2002), Contribution à la caractérisation de l’impact et de l’incidence du microclimat sur l’usage et les activités en espace public extérieur, Etude de cas à Blagnac, thèse de doctorat, Universite de Nantes.
Hamoud, A., Abdou, S., (2013), Approche d’une analyse syntaxique de l’habitat rural cas d’El Kantara, Courrier du Savoir (16) : 27-36.
Hamouda, A., Outtas, S., (2011), Etude topologique et diachronique de l’habitat rural : Cas D’el-Kantara, Biskra. Sciences &Technologie, D(34): 28-37.
Höppe, P., (1999), The physiological equivalent temperature – a universal index for the biometeorological assessment of the thermal environment. International Journal of Biometeorology, 43(2): 71-75.
Johansson, E., (2006), Influence of urban geometry on outdoor thermal comfort in hot dry climate: A study in Fez, Morocco, Building and Environment, 41(10): 1326-1338.
Louafi, S., Abdou S., (2013), Benefits and well-being perceived by pedestrian in vegetated urban space in periods of heat stress, IACSIT International Journal of Engineering and Technology, 5(1):20–24.
Makaremi, N., Salleh, E., Jaafar, M.Z., Hoseini, A.H.G. (2012), Thermal comfort conditions of shaded outdoor spaces in hot and humid climate of Malaysia. Building and Environment, 48(1): 7-14.
Nikolopoulou, M, Steemers, K, (2003), Thermal comfort and psychological adaptation as a guide for designing urban spaces, Energy and Buildings, 35(1): 95-101.
Nikolopoulou. M, Baker. N, Steemers. K, (2001), Thermal comfort in outdoor urban spaces: understanding the human parameter, Solar Energy, 70(3): 227-235.
Stathopoulos, T., Wu, H., Zacharias, J., (2004), Outdoor human comfort in an urban climate, Building and Environment, 39(3): 297-305.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
