تقليل الأحمال الحرارية و الكلفة لوحدة سكنية بتغيير الاتجاه و إضافة التظليل السقفي

Abstract EN

The Iraqi climate is characterized by high temperatures in summer that require alarge capacity of air conditioning systems to meet the suitable climate conditionswhich they are appropriate for the comfortable conditions for human especiallyhousing units.

The demerits of these systems are the high-maintenance-cost as wellas high electrical power consumption, whereas the last considers currently one ofthe major obstacles in Iraq.

This research studies the influence of two significantfactors to reduce the thermal loads of the building which leads to decrease theconsumption of the energy.

The Study of the effect for the building's direction tothe falling angle of the sunlight during the daylight in addition to the probability ofreducing the thermal load of the building, and studying the effect of shading thebuildings' roofs with red tile to prevent the falling sunlight on the roofs using thedesign method cooling load temperature difference (Cooling Load TemperatureDifference –CLTD-) to calculate the thermal loads of a building designedaccording to the modern Iraqi design Located in Baghdad.

The results explained adecrease in the thermal load through external walls by (12.32% ) when directing thebuilding to the direction West (W) compared to the South-West (SW) trend, whilethe thermal load through the glass decreased by 24.9% when directing the buildingto the North (N )direction with a trend of South-West (SW) as well as a decreaseof 8.5% for the total thermal load of the building when directing the building to thedirection North (N) compared to other trends and when shading the roof with amaterial preventing the sun reduces the rate of thermal load of the roof by 55% compared to the exposed roof.

The study also shows in terms of the costs perbuilding provides about (108787 ID / Day) of the supported governmental costswhereas the non-governmental cost is about (55987 ID / Day).