دانلود رایگان مقاله لاتین ترکیب بین دیوار خارجی و عایق بهینه از سایت الزویر
عنوان فارسی مقاله:
تعیین ترکیب مقرون به صرفه ترین بین دیوار خارجی و عایق بهینه در ساختمان کامرون
عنوان انگلیسی مقاله:
The determination of the most economical combination between external wall and the optimum insulation material in Cameroonian's buildings
سال انتشار : 2017
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مقدمه انگلیسی مقاله:
1. Introduction
Energy consumption of buildings worldwide is increasing due to climate change and the development of new building standard. Substantial shares of energy consumed into buildings go towards heating and cooling loads of buildings. These thermal loads are largely due to heat gain of the building envelope. The reduction of such heat transmission through the building envelope can effectively reduce energy consumption into building. A passive and most effective method of reducing these loads is achieved by applying thermal insulation to the external wall of the building. A thicker insulation results in decreasing the heat transmission load and increases the cost of insulation installation. Thus, the determination of the insulation thickness which minimizes the total cost for insulation and cooling or heating the building over its lifetime is imperative [1]. The determination of such optimum thermal insulation thickness is governed by several design features including the orientation of the wall, the exterior surface, the type of thermal insulating material and the type of external wall type. Several studies were carried out on the evaluation of optimum insulation thickness on the building walls based on the above mentioned design features. Most of the studies calculate the transmission load by using the well-known methods including the degree day concept and dynamic heat transfer models. For instance, Daouas [2], Ozel [3], and Nematchoua [4] investigated the influence of wall orientation on optimum insulation thickness of external walls by using the life cycle cost analysis. In their studies, transmission load was estimated by using the dynamic heat transfer model. As result, a lower optimum insulation thickness of 10.1, 5.5, and 9.25 cm was obtained from Daouas, Ozel, and Nematchoua, respectively. Energy savings of 71.33%, 63.5% and 80.91%, were found by each author, respectively. Yu et al. [5] examined the impact of the color of exterior surface on optimum insulation thickness, energy saving, and payback period by using P1-P2 method. The study was carried out in four typical cities of china and the determination of the transmission load was based on the degree-days concept. The results show that surface color has discrepant impacts on the optimum thickness in different cities. According to their results, the maximum life cycle savings were 54.4 $/m2 in Shanghai, 54.8 $/m2 in Changsha and 41.5 $/m2 in Shaoguan (with a deepcolored northeast wall), and 39.0 $/m2 in Chengdu (with a lightcolored northwest wall). Similarly, Ozel [6] considering both cooling and heating transmission loads and using dynamic heat transfer method concluded that solar absorptivity has insignificant impacts on the optimum insulation thickness in the climatic condition of Elazig, Turkey. Wati et al. [7] emphasized that the shade of building site has a significant effect on optimum insulation thickness, energy savings, and payback period. Their study was carried out in the climatic condition of
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کلمات کلیدی:
Study of the economical and optimum thermal insulation thickness for ... sciencedirect.wswhe.orc.scoolaid.net/science/article/pii/S1364032115005377 The economic model including the cost of insulation material and the present value ... of 22 years of the building, were used to find the optimum insulation thickness, ... Nowadays, in Cameroonian cities, new buildings are seen more frequently, ... Building insulation materials - Wikipedia https://en.wikipedia.org/wiki/Building_insulation_materials Building insulation materials are the building materials which form the thermal envelope of a ... Often a combination of materials is used to achieve an optimum solution and there are products which combine different types of insulation into a ... Missing: cameroonian's Heat Transfer Characteristics and Optimum Insulation Thickness for ... journals.sagepub.com/doi/abs/10.1177/109719603027973 by SA Al-Sanea - 2003 - Cited by 38 - Related articles The optimum thickness of insulation layers in cavity walls in buildings is ... Different insulation materials are investigated at different locations in the cavity for a ... Missing: cameroonian's Journal of Building Engineering - JournalTOCs www.journaltocs.ac.uk › Browse by Subject The use of composite materials for the construction industry has been the subject of .... and the optimum insulation material in Cameroonian's buildings. Authors: ... JournalTOCs www.journaltocs.ac.uk › Browse by Subject brick powder, fine recycled concrete aggregate and pozzolanic materials. Authors: ...... and the optimum insulation material in Cameroonian's buildings. Authors: ... Compressed Bricks Made of Makabaye and Pitoaré Clay ... www.scirp.org/JOURNAL/PaperInformation.aspx?PaperID=57178 However, physical and geotechnical tests on materials clay (raw materials for ... building materials becomes one of major policy priorities of Cameroonian's government. .... [29], CERAMeUNIE (2003) Suggested Best Available Techniques (BAT) .... Production and Characterization of Porous Insulating Fired Bricks from Ifon ... [PDF]Planning Buildings in Warm Humid Regions: Hints for ... - Build Simple https://buildsimple.org/.../Planning%20Buildings%20in%20Warm%20Humid%20Reg... Lightweight Materials- Bamboo- Wood- Roofs and Insulation-. Comparing Masonry- ..... Best orientations for buildings to avoid afternoon overheating. Above: Adjustable ... Right: This Cameroonian building is both modern and traditional.
