Dr.KomiBedra

  Abstract: High-albedo ground and wall materials are promoted to mitigate heat stress in tropical climates, yet conflicting evidence driven by climatic and metric variability make their impact on Outdoor Thermal Comfort (OTC) unclear. This study employed parametric simulations to assess how ground and wall albedo affect OTC, measured via the Universal Thermal Climate Index (UTCI) in typical urban canyons. Using ENVI-met, we tested ground albedo (0.2–0.8) and wall albedo (0.05–0.90) with emissivity fixed at 0.9. Findings reveal that ground albedo had a minimal impact on the UTCI (mean amplitude 0.44 °C), while wall albedo reduced the UTCI by up to 2.80 °C, prioritizing wall material selection for heat mitigation. It was also found that the increase in ground albedo offsets the cooling potential of high-albedo walls. Furthermore, differences in the impact under shaded and unshaded areas were observed. These results question assumptions of universal high-albedo benefits, recommending...

                 Le Ministère délégué chargé de l'Enseignement Technique du Togo lance un Avis d'Appel International à Manifestation d'Intérêt pour le marché de travaux de construction du Centre d'Excellence de Formation Technique et Professionnelle à la Plateforme Industrielle d'Adétikopé (CEFTP-PIA) . Ce projet s'inscrit dans le cadre du Programme de la Promotion Intégrée de la Formation Professionnelle et de l'Emploi (PIFPE), avec un financement de la Coopération Allemande à travers la KfW — Banque de Développement. Le Centre d'Excellence, d'une superficie d'environ 6 000 m² sur une parcelle de 10 500 m², sera construit selon des normes environnementales, économiques et sociales, avec une approche bioclimatique . Le programme spatial du CEFTP-PIA comprendra des ateliers agroalimentaires, textiles, de maintenance industrielle, logistique, ainsi que des espaces d'accueil, des salles de classe, une bibliothèque, une crèche, des espaces verts,...

After 11 years of patient work and dedication, I have finally joined the small family of accredited Architects in my home country, Togo. On the last Thursday, January 11, 2024, the 3 rd episode of the yearly event, ONAT à la Rencontre du Togo (ORT-3) , was specially featured with the swearing-in of eleven Architects as new members of the National Order of Architects of Togo, ONAT. Among them, I am fortunate to take, on the national board of accredited Architects, the number 202 , which I subjectively appreciate for its beautiful symmetry. During the three-day event (January 10 - 12, 2024),  ONAT made a memorable encounter with the people of Sokoke, Chef-lieu city of the Central region. From open conferences and physical activities to meal-sharing and tourism, national government officials, local authorities, members of ONAT, as well as architects from brother countries (Ghana, Burkina-Faso, Côte d’Ivoire, Cameroun, Guinée-Bissau, Democratic Republic of Cong), and the local people...

Abstract: In the context of global warming, urban thermal environments are a growing concern. Previous studies focused on Urban Heat Island effect and global warming mitigation amplitude with Land Surface Temperature (LST), ignoring the interaction of LST and Surface Air Temperature (SAT), which comprehensively affects pedestrian thermal comfort. This study examines the SAT-LST relationship to reduce the uncertainty about SAT prediction based on LST. Utilizing data from 280 air temperature sensors and Landsat satellite remote sensing, we quantified temporal and spatial variations between SAT and LST in Changsha (under a monsoon climate). Analyzing data from 2018 to 2022, the study found that: 1) There are spatiotemporal differences in the SAT-LST relationship, with strong spatial heterogeneity, notably in urban areas and during the summer; 2) A stronger correlation between SAT and LST in winter (R2 = 0.916, RMSE = 1.242 °C) than in summer (R2 = 0.500, RMSE = 1.517 °C); 3) UHI and S...

Abstract: Numerous studies have explored the impact of urban morphology and geometry on outdoor thermal comfort, intending to provide practical guidelines for urban designers. However, research findings have been inconsistent, in part due to differences in the climatic settings and the investigated heat-stress indicators. This study proposes a parametric-simulation framework to observe the behavior of thermal comfort according to the possible combinations of building density (BD), street aspect ratio (AR), and orientation. Conducted specifically under a hot-and-humid tropical-savanna summer condition, the study found that building density and aspect ratio were negatively correlated to the Universal Thermal Climate Index (UTCI), with R2 coefficients of 0.99 and 0.91, respectively. The UTCI was improved by a 1.0 °C per 10% increase in BD and by a 1.02 °C per unit of AR increase. The performance of street orientation was significantly influenced by wind direction, and strong inter-influen...

Social classes are a real thing, that's for sure. It's perceptible in many ways (from clothes to transportation, including the little gadgets different people use daily). And yet, I wasn't quite expecting this in a classroom; It just came hilarious to me, as if someone said: take this hard thing away, I want to sit on a real chair. Take a Look! By Komi B.Bedra December 23, 2023

Rayon takes floor planning and collaboration online with user-friendly editing and impressive rendering tools. Check it out at rayon.design .