Studies On The Thermal Conditions Of Residential Buildings In The Second Half Of Ghajarid Era

Architectural heritage is considered a fundamental issue in the life of modern societies. In addition to their historical interest, cultural heritage buildings are valuable because they contribute significantly to the economy by providing key attractions at a time when tourism and leisure are major industries. The need for preserving historical constructions is thus not only a cultural requirement, but also an economical and developmental demand. Herein, among different Iranian heritage buildings, Residential constructions are of a great importance. In fact, Residential buildings are one of the most remarkable examples of Iraninan edifices known as the symbol of Irans`Architecture masters. They are considered as a reflection or presentation of Iranian art parade. The originality concealed in their chronic structures, refer to the tales of Iran's extensive culture. Despite the stagnancy of the Iranian culture in Ghajarid era, in all economic, social and other aspects, and in spite of the insufficiency, existing in the reign, we can express that the architecture of Residential buildings are considered as the most astonishing masterpiece of public architecture ever built in Iranian inhabitant textures. During this period, a high variety of residential patterns created by Iranian architecture masters. In fact, the fluency and unique process of Iran`s art and architecture disrupted in the period after Mohammad shah, due to blindly imitation of the western culture. The situation aggravated at the time of Naser-E-Din shah. Concerning the mentioned events, the authors of this article considered the halves of Ghajarid era as a momentous factor influencing the architecture of residential buildings as well. This paper investigates the changes existing in the thermal conditions of residential buildings in the 3rd and 4th quarters of Ghajarid era. The research specifically aims to approach the answers for the following questions: 1) Is there a meaningful difference in the thermal conditions of residential buildings in the last 80 years of Ghajarid era? 2) Do the possible changes of thermal conditions; depend on the period in which the buildings are constructed? And is there a correlative connection between the above factors? 3) Does the apparent architectural agitation of the second half of Ghajarid era, affect the thermal conditions of residential constructions too? In order to achieve the answers, thermal conditions of 60 residential buildings picked equally from the provinces Kashan, Esfehan and Yazd were examined. Distribution of the buildings in the 3rd and 4th quarters of Ghajarid era was considered for each province as well. The research method for calculating the thermal conditions of the buildings is the Performance approach . The out puts considering (P<0.05) are then statistically analyzed using the T Test method. Diagrams and Graphs are extracted afterwards using the Excel program. Results show a meaningful decrease in the amount of the following thermal quantities: (H/A, G, H/H^) in the last 40 years of Ghajarid era. These results suggest that the thermal condition of residential buildings in the 3rd quarter of Ghajarid era was worse than the last quarter.

کلیدواژه ها:

Thermal conditions ، residential buildings ، Ghajarid era ، Heat transmission c