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The Reduction Of Heat Transfer For Concrete Ceiling In
تقليل انتقال الحرارة من السقوف الخرسانية لالبنية السكنية بتغيير زاوية ميلها (دراسة تجريبية)

Author: ATIF، A.HASSEN، Assist. Prof. عاطف علي حسين
Journal: Iraqi journal of mechanical and material engineering المجلة العراقية للهندسة الميكانيكية وهندسة المواد ISSN: 20761819 Year: 2009 Volume: C Issue: first conf./ eng. coll. Pages: 484-498
Publisher: Babylon University جامعة بابل

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Abstract

The quantities of heat transfered through horizontal concrete roof which used in Iraqi residence building was redused by inclination that roofs small angle because , inclined roofs is unpopular in Iraqi building, and that small angle not appear that thesurface is inclined). This study was undertaken in Baghdad city (lat.33.3N) with changed the inclinedBuilding ceiling from 0 to 5, and the orientations of that ceiling is changed eight timeswith assuming many ways to afford that inclination, the concrete ceiling was inclined ,clay layer is level to afford that angle or used inclined steel structure (which coveredwith many insulating materials). At last the researcher found that , the maximum saving in electrical energy forpurpose cooling at inclined concrete ceiling by 5 at North orientation is 11% and thenNorth-East & North-West. And the South, South-East, South-West orientation wasneglectful, because it's opposite effects, and also the researcher found that level claysaving 55% from ordinary electrical energy, but it's very heavy on ceiling and increasesit's dead loads, while, the inclined steel structure with fired clay covered saved 48.2%and become 38.4% when used reeds stalks sheaye 25mm thickness beside the asbestoscenentby light class fiber..

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