@article { author = {El- Serafi, Kamal and Abdel-Azim, T}, title = {Inter-Area Oscillation Damping With A Near-Optimal Fuzzy Logic Stabilizer}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {1-6}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46640}, abstract = {This paper describes a novel power system stabilizer based on fuzzy logic theory (FLPSS) for damping power systemoscillations focusing on inter-area modes. In particular, the adaptive fuzzy power system stabilizers using both off-lineand on-line training. The determination of the associated domains of the fuzzy logic power system stabilizer is obtainedby off-line training using a pre-designed optimal controller. Computer simulations for a test power system when su bjectedto small disturbances under normal and stressed operating conditions are carried out. The digital simulation resultsshow that the proposed controller proves its effectiveness and improves the system damping when compared to alead-lag and an optimal power system stabilizer controllers.}, keywords = {Power System Stabilizer,stability,Fuzzy Logic applications,inter-area modes}, url = {https://pserj.journals.ekb.eg/article_46640.html}, eprint = {https://pserj.journals.ekb.eg/article_46640_05dc0bf86ec66b4106d8e3a9fcdb85a4.pdf} } @article { author = {Henidaq, Ibrahim and Mahmoud, Gamal and Daoud, Ahmed and Zarzoura, Hamed}, title = {Feasibility Analysis for Power Transformer Expectancy and Loss of Life “A practical Case Study in Egyptian Electricity Transmission Company”}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {7-16}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46648}, abstract = {Quality of power supply is now a major worldwide important issue making harmonic analysis an essential element in power system planning and design. Because of the power transformers are major components in power systems; this paper studies the impact of power harmonics on power transformer. This phenomenon increases the power losses, over loading, over voltage conditions; accelerate aging of life and failure probability of transformer. The paper refers to the importance of mitigation this phenomenon, and presents a typical case study of high voltage power transformer which exists in Egyptian Electricity Transmission Company (EETC). The electrical power network is simulated using the ETAP 6.0.0, and the results demonstrate the importance of mitigation of this phenomenon}, keywords = {Harmonic,Nonlinear load,Total Harmonic Distortion (THD)}, url = {https://pserj.journals.ekb.eg/article_46648.html}, eprint = {https://pserj.journals.ekb.eg/article_46648_e4fa2424e41ef2368a7adceda57cd1fe.pdf} } @article { author = {Elsayed, Shereen and Attia, Hossam and Khalifa, Fahim and Ghaly, Reda}, title = {Particle Swarm Optimization-Based Pd-Controller of Dc Servo-Motor}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {17-21}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46651}, abstract = {This paper presents the design of a particle swarm optimization (PSO) controller for the speed of a DC servo-motor. First, a proportional-derivative particle swarm optimization (PDPSO) based controller is designed, and then compared with Signal Constraint block of Simulink Response Optimization Toolbox instead of conventional methods. The DC servo motor is modeled and simulated using simulink /MATLB environment. The obtained results ensure the superiority of PDPSO-based controller.}, keywords = {DC Servo Motor,Proportional-Integral- derivative,Ziegler-Nichols method,Particle Swarm Optimization}, url = {https://pserj.journals.ekb.eg/article_46651.html}, eprint = {https://pserj.journals.ekb.eg/article_46651_dc2f3b627504535eb28fdb4b76c3a328.pdf} } @article { author = {Morsy, Mohamed}, title = {Simulation Study on the Production of Hydrogen/Syngas via Partial Oxidation in a Natural Gas-Fueled Engine}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {22-29}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46702}, abstract = {AbstractThe automotive industry is considered as one of the biggest industries worldwide. On this field, continuous researchand development are performed to improve efficiencies of cars and trucks. Increasing efficiencies of automotives notonly lead to cost reduction but also to reduced pollution, which is very important in today’s society. Therefore, eachcountry in the world is carrying out research on developing alternative energy sources. Therefore, it is essential todevelop the environment-friendly alternative energy urgently considering the limitation of fossil fuel and the globalwarming caused by environmental destruction. In this research, the new technology to produce hydrogen and syngasfrom natural gas with a homogeneous charge compression ignition reforming engine was studied. The simulat ion toolused was CHEMKIN 3.7, using the GRI natural gas combustion mechanism. This simulation was conducted on thechanges in hydrogen and syngas concentration according to the variations of equivalence ratio, intake heatingtemperature, and oxygen enrichment with partial oxidation. Through the parametric screening studie s, optimumconditions in this study were found: The equivalence ratio was 2.5; The inlet temperature was 530 K, and the oxygencontents in air was 0.3.}, keywords = {}, url = {https://pserj.journals.ekb.eg/article_46702.html}, eprint = {https://pserj.journals.ekb.eg/article_46702_eb7a91e3a1a398910c04f82d9d8a6e54.pdf} } @article { author = {Mahmoud, Tamer and Elsawaf, Imam and El-Nahhas, Kamal}, title = {Investigation of the Flow Behavior of Solid-Liquid Settling Slurries in a Horizontal Pipeline}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {30-41}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46704}, abstract = {Developing accurate models for pressure drop in slurry pipelines is one of the most important challenges of researchers around the world. Pressure drop is one of the most important technical parameters to be evaluated by the designer of pipeline slurry transportation system. Also it is the parameter which dictates the selection of pump capacity. The properties of slurries mainly depend on the tendency of the particles to settle out from the carrying liquid. The extent to which the particles will be free to settle in horizontal flow depends on the terminal velocity, the turbulence and particle-particle interaction. Physical models for the prediction of the pressure drop, flow regime, and specific energy consumption are presented. Several studies for pressure drop prediction in slurry flow are available in literature. The comparison between the proposed correlations with the experimental data of the settling slurries is satisfactory. Since the decrease of the specific power consumption and increase overall the transport system efficiency, the carrying capacity should be increased. The experimental investigations were performed on three different sorts of sand solids to satisfy the economic advantage by adjusting the particle size. The experiments were conducted in 26.8 mm inner diameter horizontal pipe on three sizes of sand particles of which mean diameter are 0.2 mm (fine), 0.7 mm (medium) and 1.4 mm (coarse). Flow velocity was up to 7 m/s and overall concentration up to 33% by volume for each velocity. The effect of slurry velocity and particle concentration on the slurry flow behaviour and pressure drop in the turbulent regime was evaluated.}, keywords = {Settling slurry,Pressure drop,flow regime,specific energy consumption and particle size}, url = {https://pserj.journals.ekb.eg/article_46704.html}, eprint = {https://pserj.journals.ekb.eg/article_46704_dfff1351d5a10a6588538ce4cc15cc27.pdf} } @article { author = {Okeily, Moustafa and Mikhael, Nady and Morad, Kamal and Mohamed, Ayman}, title = {A Comparative Study of Integrated Coal Gasification Combined- Cycle Power Plants (ICGCC) with Kalina Cycle}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {42-58}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46707}, abstract = {Low grade waste heat utilization and new combustion technology are challenging tasks for researchers to achieve these objectives. This paper is concerned with the integration of coal gasification system with a combined gas turbine, steam turbine power plant cycles and with ammonia-water cycle, which is known as Kalina cycle. Al-maghara coal in North Sinai is used as the solid fuel in gasification process.Three cycles configurationsare compared as follows: Scheme (A) with dual pressure Heat recovery boiler with the condenser of steam cycle as the evaporator for Kalina cycle,scheme (B) with heat recovery boiler for both of steam and Kalina cycleand scheme (C), similar to scheme (A), but with a superheating in Kalina cycleto identify the most promising one for implementation. Key parameters of Kalina cycle were the main elements of comparison. Results revealed that scheme (A) has the best performance with regard to the output power, thermal efficiency and specific fuel consumption. Substantially, the integration of Kalina cycle with coal gasification combined cycle counterbalances the reduction of the overall efficiency due to the gasification thermal efficiency. Therefore, integration of Kalina cycle in the ICGCC is justified.Furthermore, part load calculations were made for scheme (A) and identified that the integration of Kalina cycle to ICGCC imposed restrictions to Kalina cycle constrains, so that it is more economical to keep such configuration of combined plants at nearly full load conditions.}, keywords = {}, url = {https://pserj.journals.ekb.eg/article_46707.html}, eprint = {https://pserj.journals.ekb.eg/article_46707_a386665661e9507908b6ff69bccb091f.pdf} } @article { author = {ABD El-SAMED, ALY}, title = {THERMAL PERFORMANCE of DIFFERENT GAS TURBINE CYCLES}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {59-68}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46709}, abstract = {The performance of seven different gas turbine cycles are investigated versus the change of the gas turbine inlet temperature (TIT) which ranged from 773K to 1373K keeping ambient air temperature 294K, pressure ratio 9 and air flow rate 37 kg/s constant. The corresponding performances are expressed in terms of: fuel consumption rate, power output, thermal efficiency and specific power output for the seven cycles. From the results it is found that both of the turbine inlet temperature (TIT) and cycle arrangement have a great effect on the thermal performance of the gas turbine cycle. At the maximum turbine inlet temperature (TIT) 1373K, it is found that the highest obtainable power output is produced by the modified cycle4 while the highest obtainable efficiency is produced by the modified cycle6}, keywords = {Gas turbine,performance,power,Efficiency}, url = {https://pserj.journals.ekb.eg/article_46709.html}, eprint = {https://pserj.journals.ekb.eg/article_46709_489019b2a4a8dad1edcd046071cfdd77.pdf} } @article { author = {ABD El-SAMED, ALY}, title = {Thermal Performance Enhancement of a Practical Combined Gas-Steam Power Plant}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {69-78}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46800}, abstract = {The research suggests some means to increase the very low overall efficiency and power output of existing combined plant. The effect of changing some operating parameters on the performance of the combined plant is investigated. Optimum operating conditions are chosen to be run together lead to an increase of the net power output by 25.03% and the overall efficiency by 7.28%. Good correlations are obtained correlating the net power output and overall efficiency of the combined plant with the operating parameters.}, keywords = {Gas-Turbine,Steam-Turbine,Combined Plant,Operating Parameters}, url = {https://pserj.journals.ekb.eg/article_46800.html}, eprint = {https://pserj.journals.ekb.eg/article_46800_2d8974a848af814600e9d03c3d391bf7.pdf} } @article { author = {}, title = {EFFECT OF TIN CONTENT AND ECAP PASSES ON THE MECHANICAL PROPERTIES OF Cu/Sn ALLOYS AS BEARING MATERIALS}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {79-89}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46801}, abstract = {Equal channel angular pressing (ECAP) is a materials processing method that allows very high strains to be imposed, leading to extreme work hardening and microstructure refinement. Cast Cu-2, 5 and 10 wt% Sn alloys in the form of 25mm diameter and 300mm long rods are ECAPed through 12 mm diameter, 120o inner angle, and 20o out arc angle die. It is possible to ECAP those alloys for 5, 4, and 1 pass at room temperature, respectively. Grain size decreases of with increasing Sn content and number of ECAP passes. Besides, the ultimate tensile stress, proof strength, and hardness of Cu-2, 5 and 10%Sn alloys increase with Sn content and ECAP pass number. However, UTS of 2%Sn alloy reaches a maximum value after 4 passes, and that of 5%Sn alloy reaches its maximum after 3 passes. Moreover, the elongation percent decreases strongly after first ECAP pass. The elongation of Cu-2 and 5%Sn alloys begin to increase after second pass until third and fifth passes, respectively. On the other hand, the wear resistance is improved by increasing Sn content and number of ECAP pass, especially after first pass. Also, remarkable decrease is observed in surface roughness (Ra) by decreasing Sn content and by increasing the number of ECAP pass.}, keywords = {Cu/Sn alloys,Microstructure,Mechanical properties and Wear resistance}, url = {https://pserj.journals.ekb.eg/article_46801.html}, eprint = {https://pserj.journals.ekb.eg/article_46801_98ecc528c80788095aadbbdcf338b390.pdf} } @article { author = {Kandil, Anwar and Abdel-Gwad, Ebtisam and M, Yassen}, title = {Effects of Shaft Misalignment on the Stresses Distribution on teeth of Spur Gears}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {90-98}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46802}, abstract = {Shaft misalignment is a common problem in most rotating machines. It leads to generate vibration and extra dynamic loading on power transmitting elements, such as gears. Furthermore, it leads to irregular distribution of applied loading on the faces of teeth of mating gears by being concentrated on one side of tooth face. The work presented in this paper focuses on studying the effects of shaft misalignment on stresses distribution on transmitting gear tooth. This is important for gear designers and for those who work in gear maintenance, especially to avoid fracture that is expected to initiate and propagate at the locations of stress concentration. A Finite Element (FE) package (ANSYS) was utilised to conduct this study, where, . 3D elements of two mating gears were modeled aiming to examine the resultant stresses under modified misalignment conditions.. In order to minimize the computational time, only one tooth of each gear was considered for simulation. The influence of the inclination angle of the shafts that the gears were attached was assessed. in particular, . Different FE analyses were carried out where the inclination angle varied from 0.0° to 2° in 0.5° step. The obtained results reveal that stresses concentration increases with the increase of the angle of inclination. . As a result, the possibility of the fracture of the gear increases in the root with increasing the misalignment angle}, keywords = {Spur gear,gear tooth,misalignment angle,Finite Element Analysis,bending stress,Contact Stress}, url = {https://pserj.journals.ekb.eg/article_46802.html}, eprint = {https://pserj.journals.ekb.eg/article_46802_c45756dc21eb38262bd55f6edf045871.pdf} } @article { author = {}, title = {Refloating Scenarios of an Intact Stranded Tanker}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {99-105}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46804}, abstract = {In most grounding casualties, rapid refloating is desirable to remove the ship from a place of danger, to reduce stress in the hull and to minimize the risk of pollution. Different grounding conditions have been attributed to a candidate double hull tanker in order to investigate the possible refloating scenarios of the intact-grounded vessel. The refloating operation may consist of lightening and/or internal weight transfer. The objective of this paper is to illustrate an efficient weight management technique that may help the shipmaster to attain a good refloating procedure. For this purpose, each situation is analyzed; stability and strength check are made in order to depict the safe action to be undertaken. The results are graphically represented to make them of practical use for the operator. It is recommended that the resulting graphs are prepared in the design stage as a kind of Risk Management Solution, which helps the shipmaster to take quick, right and at the same time cost-efficient decision}, keywords = {salvage,refloating,double hull tanker,stranded,Risk Management}, url = {https://pserj.journals.ekb.eg/article_46804.html}, eprint = {https://pserj.journals.ekb.eg/article_46804_69f1abff57d9bcb21461adf5168f2f6a.pdf} } @article { author = {kilany, Rasha and Sharobim, Kamal and Hussien, Nourallah}, title = {Mechanical Properties of UHPC with Hybrid Fibers}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {106-113}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46805}, abstract = {The effect of steel, and hybrid fiber contents are studied on the mechanical properties of the new generation Ultra High Performance Concrete (UHPC) produced by available local materials. According to the curing condition and fiber content; the compressive strength, flexural strength, and tensile strength reach 175 MPa, 21.35 MPa, and 12.5 MPa respectively. Based on the data of testing, an optimized concrete mix proportion compressive strength of more than 150 MPa is proposed.}, keywords = {}, url = {https://pserj.journals.ekb.eg/article_46805.html}, eprint = {https://pserj.journals.ekb.eg/article_46805_e36d83ddf9eea694a4b80a6f753042f7.pdf} } @article { author = {Sharoubim, Kamal and Elgendy, Mohamed and Elsherify, Ahmed}, title = {Strength properties of Port Said soft clay stabilized by different binders}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {123-133}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46808}, abstract = {Due to the short history of the Deep Mixing Method (DMM) in Egyptthere is limited data on the improved properties of Port Said clay. In addition, there are enormous amounts of by-products from cement, marble and limestone industries that need to be employed instead of being environmentally harmful materials.This paper aims to bridge the gap of limited data about the effectiveness of dry mixing method to improve strength properties of Port Saidclay using common binders, cement and lime. In addition, the effectiveness of using cement waste, limestone waste and marble powder to partially or fully replace cement and limein the dry mixing method was examined.To achieve this purpose, a large number of unconfined compression testsand limited number of triaxial tests were performed. Different binder‟s contents and different mixing proportions between binders were blended to prepare specimens using soils representtwo different layers ofSouth Port Said clay. The results of testing specimens afterdifferent curing time showed that dry mixing method can effectively improve strength and stiffness of Port Said clay.It was also concluded that cement waste can partially or fully replace cement and lime to improve Port Said clay by dry mixing method whilewith marble powder and limestone waste can partially be used with less effectiveness.}, keywords = {Ground Improvement,Deep Soil Mixing,Dry Mixing Method,Cement Waste,limestonewaste,Marble powder}, url = {https://pserj.journals.ekb.eg/article_46808.html}, eprint = {https://pserj.journals.ekb.eg/article_46808_98828985a094931edab5609995451a34.pdf} } @article { author = {}, title = {Analysing Foundation on Port Said Soft Clay Stabilized by Deep Mixed Columns}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {134-143}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46813}, abstract = {Port Said is characterized by the presence of thick layers of soft clay. Particularly inSouth of Port Said, soft clay strata extend from the ground surface to few tens of meters making it not possible to use conventional ground improvement methods, as soil replacement. Deep Mixing Method(DMM) is an alternativemethod with relative advantage as it does not require full soil replacement and can be used when soft soil layers extend deeply up to 40 m. This paper aims to study the effectiveness of using deep mixed columns (DMC) to improve the bearing capacity and to reduce settlements below embankments and light structures in South of Port Said. Numerical analyses on hypothetic embankment and raft foundation models were performed using finite element packages PLAXIS. A parametric study was performed to assess the influences of different parameters on DMCeffectiveness. The study showed that the installation of DMC is very effective in reducing settlement and lateral movement of South of Port Said deep soft clay strata particularly for low area ratios of DMC. On the other side, DMC installation generates zones of shear and effective stress concentration. From the studied parameters it was noticed that DMC effectiveness to reduce settlement increases linearly with DMC depth and with stiffness ratio between DMC and soil. 10% area ratio was found optimum for settlement reduction while16 meter DMC depth was optimum for lateral movement reduction}, keywords = {Plaxis 2D,FEM,Deep Mixing ColumnsDMC,soft soil,Port Said}, url = {https://pserj.journals.ekb.eg/article_46813.html}, eprint = {https://pserj.journals.ekb.eg/article_46813_f06d30b92c3d4ee27390d12847f1ccc1.pdf} } @article { author = {Elkamash, Waleed and Elgendy, Mohamed and Salib, Rafeek and Kandil, Manhal}, title = {Studying of Shear Walls with Piled Raft over Soft Soil against Seismic Loads}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {144-155}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46816}, abstract = {Modelling the interaction between piled raft and shear wall frame structure has not attracted many researchers in lastdecades. Herein, a 3-D continuum model of piled raft and shear wall frame structure was introduced. That model wasincorporated into developed software in order to study the behaviour of shear wall against earthquakes. The soft soiltype of Port-Said was examined in this study to get practical solutions for soft soil problem in such cases. Differentparametric cases were presented to reflect the effect of the position as well as stiffness of shear walls on deformations,stresses, and moments and drift ratios. Factors were considered of shear wall geometry and stiffness to study thebehaviour of shear walls with piled raft over soft soil. Soil was simulated by elast ic plastic model, while FEM was usedto model piled raft and shear walls. ASTN3 which was developed by the author was used here to analyze different casesand numerical results and conclusions were introduced.}, keywords = {soft soil,shear walls,piled raft,Numerical analysis,seismic loads,Finite element method}, url = {https://pserj.journals.ekb.eg/article_46816.html}, eprint = {https://pserj.journals.ekb.eg/article_46816_eb0ec3b16fad80f40fecb4ae1d651a5e.pdf} } @article { author = {Abd El-Hafeez, Mostafa and El-Mokadem, Ashraf and Sallam, Islam and Nashaat, Basma}, title = {Adapting the Green Pyramid Rating System for Assessing Zero Energy Concept on Neighborhoods Level}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {153-160}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46819}, abstract = {Countries face challenges in changing their risky and costly systems of fossil fuel usageinto sustainable development. So many communities started using Neighborhood sustainability assessment tools since the turn of 21st century. Countries utilize these tools to measure their success in approaching sustainable development goals. Each tool is accommodated to suite its environment. For example, Leadership in Energy and Environmental Design (LEED)Rating System is concerned on energy and gives lower value to water while Green Pyramid Rating System (GPRS) does exactly the opposite. On the other hand there isn't a comprehensive neighborhoodrating system in Egypt. This paper proposed a Green Pyramid Neighborhood Rating System, which is based on the original GPRS to assess zero energy concepts on neighborhood level counting building, infrastructure, street network, sidewalks, facilities and community development. This rating system can help architects in designing sustainable communities by defining the weight of every category and point}, keywords = {Neighborhood sustainability assessment tools,GPRS,LEED,Zero Energy Community,Rating System,Neighborhood Development,Sustainable Design,Energy management,GPNRS}, url = {https://pserj.journals.ekb.eg/article_46819.html}, eprint = {https://pserj.journals.ekb.eg/article_46819_736666ad3a7588e9982b598e4e5deae3.pdf} } @article { author = {Abd El-Hafez, Moustafa and elmokadem, Ashraf and Abu-Samra, Noha}, title = {Challenge of Construction Materials and Solution of Nanotechnology}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {161-170}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46824}, abstract = {Nanotechnology has a significant impact in the construction materials (structure materials, finishing materials and energy materials). Several applications have been developed for construction sector to improve the durability and enhanced performance of construction components, energy efficiency and safety of the buildings, facilitating the ease of maintenance and to provide increased living comfort.}, keywords = {}, url = {https://pserj.journals.ekb.eg/article_46824.html}, eprint = {https://pserj.journals.ekb.eg/article_46824_46198a633f112f4e8352c4d6acced1f4.pdf} } @article { author = {Abd El-Hafez, Moustafa and elmokadem, ashraf and Abu-Samra, Noha}, title = {Improve Energy Efficiency through Nano Pore Vacuum Insulation Panels "Vips"}, journal = {Port-Said Engineering Research Journal}, volume = {18}, number = {1}, pages = {171-179}, year = {2014}, publisher = {Port Said University, Faculty of Engineering}, issn = {1110-6603}, eissn = {2536-9377}, doi = {10.21608/pserj.2014.46825}, abstract = {Energy efficiency of the built environment greatly depends on the performance of the insulating materials used in the building envelope construction. Vacuum insulation panels (VIPs) offer excellent thermal resistance properties that can enhance the energy efficiency of the insulating systems and provide savings in energy consumption. However, VIP systems are virtually unknown and rarely used for building construction. There is a need to investigate the use of VIPs in various components of building envelopes (walls – roofs) and their long-term function and performance.}, keywords = {}, url = {https://pserj.journals.ekb.eg/article_46825.html}, eprint = {https://pserj.journals.ekb.eg/article_46825_b43d50a51a2b5a43921c19f295ad2d64.pdf} }