The quantitative assessment of the effects of the morphology of urban complexes on the thermal comfort using the PMV/PPD model (a case study of Gheytariyeh neighborhood in Tehran)

Abstract In the present age, environmental sustainability has been severely challenged because of human constructions and changes in ecological landscape cities so that issue compatibility urban development with these become especially important. Changes morphology, structure, form geometry cities, which are themselves caused by complexes buildings, have a profound effect on micro-climate environments efficient adjustments. To assess or unsustainability neighborhoods, thermal comfort is considered as good indicator. The assessment this qualitative concept requires use quantitative indicators tools can be spatially presented to planners designers help them plans. PMV/PPD model uses heat-balance equations empirical studies calculate ‘predicted mean vote’ percentage dissatisfied’, somehow derived from parameters affect comfort. innovation study compared background researches evaluation building design policies comfort, fills gap between evaluations level scale architecture planning previous researches. An applied descriptive-analytical research method used study. Firstly, data needed evaluate main purpose selected site located Gheytariyeh neighborhood Tehran were collected. They then simulated analyzed. results indicate difference buildings city blocks make heating different neighborhoods residents. recent proven (3- 4-dimensional square shapes) temperature factors. Spatial simulations conducted ENVI-met software show other indices studied, PMV PPD least distance ideal conditions trilateral high-rise greatest rectangular blocks. It worth noting adoption regulations related implementation one measures required when plans drafted approved. indicates minimum maximum values index respectively equal 51.06% 99.96% for option 1 (three-sided block), 56.09% 98.26% 2(four-sided 57.32% 98.19% 3(empty middle block) 58.76% 98.05% 4 (rectangular block). paper tried explain requirements it.