Shahram Nassehzadeh Tabriz, Fagan Aliyev, Studying the Effect of Zone’s Volume to Area Ratio (V/A) on its Energy Cycle in Yazd, Iran Hot-Arid Climate, Journal of Engineering and Applied Sciences, Volume 11,Issue 5, 2016, Pages 1028-1035, ISSN 1816-949x, jeasci.2016.1028.1035, (https://makhillpublications.co/view-article.php?doi=jeasci.2016.1028.1035) Abstract: This study starts with this question that is there any correlation between the volume to area ratio of a space and its interior thermal conditions and if answer is yes, how it can affect the energy cycle in that space and what aspects of interior heat, energy and comfort conditions would be affected? The BIM based software simulation based on existed case method being chosen as methodology of research and The EcotectTM 5.5 Software being chosen to model, simulate and investigating previously mentioned issue. Researchers model two zones of Mortaz traditional house in hot dry climate of Yazd in Iran as case study of this research. Results showed that there is a correlation between volume to area ratio of a space and its energy cycle. With increase of volume/area ratio, the fluctuations of thermal balance of interior space and parameters like variance of maximum and minimum temperature of space and total energy consumption increased both in seasonal periods and also in just single daytime. Keywords: Volume to area ratio;energy cycle;thermal mass;BIM Software;EcotectTM;zones