Nour Eldin, AhmedMohamed abbas, Marwa2023-04-042023-04-042023Faculty of Engineeringhttp://repository.msa.edu.eg/xmlui/handle/123456789/5476The research has studied the relationship between the quality of thermal comfort in the outdoor spaces of the residential urban clusters on the quality of thermal comfort in the indoor spaces in order to provide a proposed approach for the designs of the outdoor spaces that work to raise the thermal comfort efficiency of the indoor spaces overlooking them, by studying the extent of the impact of these design variables on the thermal comfort in the outdoor urban space , by measuring the predictive average value of PMV as an indicator of outdoor thermal comfort, that is by using the results of previous studies to measure the thermal comfort of the external spaces of buildings through the inputs of climatic determinants and urban variables such as the geometric shape and orientation of the building block with the fixation of the other influential urban factors, by conducting a simulation using ENVI- MET for the outdoor spaces of the commonly designed residential urban clusters in the New Cairo area, and measuring the value of PMV as an indicator of the thermal comfort value of the indoor spaces, using DESIGN BUILDER for the indoor spaces, then comparing the results of the thermal comfortenThermal Comfort,Urban Sustainability,Passive Techniques,Residential Urban Clusters,Predictive Main Vote (P.M.V).MSA UniversityOctober University of Modern Sciences And ArtsArticle