Solar analysis of complex forms: a comparison between the radial form and the rectangular U-shape

Abstract

It seems evident that the geometry of the urban form as an urban design tool is crucial. Different urban forms result in differing microclimates, offering more or less comfort. The layout of the structure can modify the urban climate through proper design, thus improving thermal comfort both outside and inside buildings and even reducing energy demands for heating and cooling requirements. Some forms, which can create a space surrounded and defined by walls, can offer self-protection against unfavourable weather and create their own microclimate. Such forms are very common within the urban structure and this principle is adequate in residential areas, since such spaces can be used as playgrounds for children and can enhance social activities and human contact. These forms are also characterised by their ability to generate a self-shading effect. The previous studies were mainly concerned to examine simple shapes and less care was given to examine such forms. The forms considered in this experiment are radial forms and the rectangular U-Shape. These forms could be considered as intermediate types between closed and open layouts. In Palestine and other temperate climates, a layout which is semi-closed could be more beneficial, as completely closed or completely open layouts are preferable in arid zones and cold climates respectively. The experiment proves the capability and universality of this comprehensive approach which includes all the points that should be examined in order that the maximum benefit can be derived. In addition, the method illustrates how these analyses could be related to aspects of design and energy. The …