Investigation of cooling load reduction in buildings by passive cooling options applied on roof

摘要: Abstract Performance of three passive cooling systems namely, water pond on roof, jacket roof and radiation shield is assessed here experimentally numerically. In each case a mathematical model the building was developed by taking into account time-varying conduction, convection heat loads as well infiltration heating load, aiming to provide both an acceptable accuracy reasonable computational time. The numerical results were then validated against experimental data taken from house, which build tested in Shiraz, Iran. indicate that application these methods can reduce required during summer considerably. Furthermore, compare performance techniques, temperature inside load maintain constant calculated. calculated among techniques have best lowest performance, respectively.