Mechanical Engineering

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https://hdl.handle.net/20.500.11888/10117

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Browsing Mechanical Engineering by Author "Abd Elmuhsen, Salamh"

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    “Optimization Of Insulation Thickness For Building’s External Walls And Ceilings In Palestine (West Bank)”
    (2018) Zaid, Almasoud; Muhammad, Jaarah; Abd Elmuhsen, Salamh; Muhanad, Abu Alwafa; Ihab H., AlSurakji
    This study focused on systematic approach for optimization Insulation Thickness For Building’s external wall and ceilings in Palestine. Various methods had been adopted by researchers to calculate the optimum insulation thickness that considered thermal conductivity of wall, building orientation effect, and heat gain or loss from the wall. The determination of the optimum insulation thickness of the building wall material has major drawback on building and insulation material cost, energy consumption by air conditioning system, heat transfer coefficient of wall on heat and cool demand. Different cities with different climate zones have been selected for this study such as Nablus, Ramallah, Jenien ,Tulkareem and Salfite. The optimum thickness in these cities will be calculated and compared with required thickness in west bank energy saving standard. The optimization is based on the life cycle cost analysis. Generalized charts for selecting the optimum insulation thickness as a function of degree days and wall thermal resistance are prepared. Life cycle savings of the insulated buildings are computed for Palestine. Savings up to 93 NIS/𝑚2 to 285 Nis/𝑚2 for wall and ceiling with board foam, polystyrene and Polyurethane foam insulation in west bank. Payback periods between 1.5 to 3.1 year are possible for board foam, Payback periods between 1.9 to 2.2 year are possible for polystyrene and Payback periods between 2.3 to 2.4year are possible for Polyurethane foam insulation depending on the type of wall structure.
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    Optimization Of Insulation Thickness For Building’s External Walls And Ceilings In Palestine (West Bank)”
    (2018) Abd Elmuhsen, Salamh; Muhammad, Jaarah; Muhanad, Abu Alwafa; Zaid, Almasoud; Ihab, Al-Surakji
    Summary of graduation project This study focused on systematic approach for optimization building’s external wall, roof and ceiling thicknesses, which composed of insulation material, concrete, rocks…etc, located in Palestine. Various methods had been adopted by researchers to calculate the optimum thickness that considered thermal conductivity of wall, building orientation effect, and heat gain or loss from the wall. The determination of the optimum thickness of the building wall material has major drawback on building and insulation material cost, energy consumption by air conditioning system, heat transfer coefficient of wall on heat and cool demand. Different cities with different climate zones have been selected for this study such as Nablus, Ramallah, Hebron, Bethlehem, Jericho, Salfite. The optimum thickness in these cities will be calculated and compared with required thickness in west bank energy saving standard. Obtaining optimum wall thickness has been a subject of interest for many years amongst the researchers. In 1999, a scholar from Berzeit University in Palestine, conducted a research on the optimum wall thickness, and he found that there is great potential to reduce heat and cooling demand by increasing the thickness of insulation layer and by using better material of concentration. Since 1999 too many parameters have been changed such as climate change, materials used in building construction and in insulation …etc. A new study on the optimum wall thickness must be conducted again.