The Reduction  Of  Heat Transfer For Concrete Ceiling In

A.HASSEN,; ATIF,; Prof, Assist.

	The Reduction Of Heat Transfer For Concrete Ceiling In
Iraqi journal of mechanical and material engineering
Article 1, Volume 0, Issue 0, 2010, Pages 484-498
Authors
; ; Assist. Prof
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 the surface is inclined). This study was undertaken in Baghdad city (lat.33.3N) with changed the inclined Building ceiling from 0 to 5, and the orientations of that ceiling is changed eight times with 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 covered with many insulating materials). At last the researcher found that , the maximum saving in electrical energy for purpose cooling at inclined concrete ceiling by 5 at North orientation is 11% and then North-East & North-West. And the South, South-East, South-West orientation was neglectful, because it's opposite effects, and also the researcher found that level clay saving 55% from ordinary electrical energy, but it's very heavy on ceiling and increases it'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 asbestoscenent by light class fiber..
Keywords
Energy conservation; thermal leakage reduction; Roof inclination

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