An-Najah Staff

This paper illustrates building architectural design including building sitting, building envelope performance, solar chimneys heating and cooling performance, natural ventilation and forced ventilation by solar chimneys and effective use of building façade for shading. Mathematical modeling and computer simulation of this building incorporating actual weather data of Bethlehem have shown that all measures used will reduce energy demand in winter by more than 70% and heating load will be less than 6KWhr/m2. Solar chimney, natural ventilation and dynamic shading of all glazing area will result in reduction of temperature by 6-12ºC. This makes the need for cooling system operation in summer is limited for few days every year.