Paper Title
Impact Ratio for the Land Areas on the Building Energy Demands in Baghdad City

Abstract
The efficiency of energy conservation of the main axes to provide occupant's thermal comfort of green architecture buildings. One of the variables affecting the efficiency of energy conservation is the land area. This study focused on the role of "The land area's impact on the energy reduction in the building spaces for the occupant's thermal comfort". The research problem was the lack of standards of the land area's impact ratio on the energy demands. According to this lack of studies, a major objective for the research was established which is: (determining the land area's impact ratio on the building energy demands inside its spaces). In order to achieve this, the following methods are required: a- Determining a theoretical frame in the land area subject in order to identify its importance and its role in preserving energy in buildings through the previous studies. b- Determining a ratio of the land area impact on the energy demands in its spaces, through scientific studies on residential building map (test sample) by using thePassive House Planning Package (PHPP) to measure the energy demands then analyzing it to reach the results. In the end of the study, conclusions were present, which cover the aim of the research. It was proved that positive relationship between energy demands and land area at a rate (% 31.6) to cool down the building in the summer period, and (26.1%) to warm it up in the cold period for each increase of additional (100 m2) in the land area. Keywords - Building shape, Energy demands, Green buildings,Land area, Thermal comfort