Author : Noor B Sakran and Salih I Najim

The present work is aimed to reduce the annual electric energy consumption in a residential building in Basra city through introducing a standardized rule for the annual electrical consumption for the cooling and heating purposes. This work will concentrate on all parameters which help to go toward the optimum use of thermally efficient house. The building energy analysis program HAP 4.9 was used to simulate the annual energy consumption for a typical residential house built with six types of building materials. Building systems included a conventional building material (common brick) as base case, three types of common insulations (polyurethane, polystyrene and Cellulose fiber insulation), a flat type of Insulating Concrete Form (ICF) wall, and an Autoclaved Aerated Concrete (AAC) block wall. This research showed alternating significance between two different building techniques utilized in the study in terms of space cooling, heating and total annual energy consumption. These building techniques are (AAC and ICF) with liquid insulation coating which showed respectively (32.1%) and (26.83%) energy savings compared with the base case. Also, this study demonstrated the significance of the building techniques which utilize (window shading by overhangs and building orientation) where (33.45%) and (34.6%) respectively energy savings was shown for the AAC building system compared with the base case.

Keywords: AAC, ICF, polyurethane, polystyrene, Cellulose fiber insulation.