The Bio-Climatic Analysis and Thermal Performance of Residential Building in Upper Egypt A Case Study, “East El-Owauinat Region”

Abstract

ABSTRACTAs a result of the change and development of Egyptian society, Egyptian governmenthas focused its attention of comprehensive development to various directio ns. One of theseattentions is housing, construction and land reclamation in Upper Egypt to go out from thenarrow valley which is about 5% of Egypt area. East El- Owauinat is one of these areas. It isan agriculture project and must be valid all the facto rs needed for sustainability. East El -Owauinat region is located at 220 28` N latitude and 280 42` E longitude. The climate of thisregion is caricaturized by; aridity, high summer daytime temperature, large diurnaltemperature variation, low relative humidity and high solar radiation reaches to about1000W/m2 on horizontal surface in summer seasons .In such environments, man losses his ability to work and to contribute effectively in thedevelopment planning due to the high thermal stress affected on him. The strategy of buildingin this regioy to understand the needs of the people but to create an indoor environment whichis suitable for healthy, and comfortable to live and work in it. Also, reduce or if possibleeliminate the energy expenditure for environmental control. In order to achieve this, attentionhas to be focused on building design which is a function of building form, orientation,location, and materials used. This study deals with the bio-climatic analysis of East El-Owauinat region and the thermal performance of building in this region to valid the EgyptianEnergy Efficiency Residential Code. The results show that, the air catcher, court and Passivecooling systems (evaporative cooling), maintained the indoor climate in the thermal huma ncomfort zone during the hottest period under the effect of climatic conditions of East El -Owauinat. Orientation, size, shape, building materials and outdoors -climatic factors influencein energy auditor of the building envelope. Also shading devices, ins ulating materials, andsmart glass achieve a harmony building with environment , and save energy by about 60%.Thermal insulation is needed for all exposed roofs and the required thermal resistance hasa minimum R-value ≥2.5 m2K/W. The required thermal resistance for walls must bebetween 0.9 and 1.3 m2K/W.