ORIGINAL_ARTICLE
PSO-Based Optimal Dispatch Considering Demand Response as a Power Resource.
Demand Response (DR) is the reduction in electric energy by the consumers from their normal consumption due to change in electricity price over time or responding to operator order when system reliability is jeopardized. This paper proposes the reduction in consumption as a virtual generation added to the system and it can be treated as a demand resource for optimal dispatch. DR cost function is proposed which looks like the cost function for conventional generation to make an optimal combination between both DR and conventional generators, to operate the power system. Particle swarm optimization (PSO) technique is used to get the optimal load dispatch considering DR as a demand resource. The optimal dispatch is obtained using MATLAB software by determining the operating cost of 6- bus distribution system with five generators and four DR.
https://bfemu.journals.ekb.eg/article_99324_e72acda7e6eeac64366a1caa9a6c3933.pdf
2020-06-30
1
6
10.21608/bfemu.2020.99324
demand Response (DR)
Virtual generation
Marginal cost
Power system reliability & Particle Swarm Optimization (PSO)
Ibrahim
Mansy
1
Electrical Engineering Department, Mansoura University, Egypt
AUTHOR
Ahmed
Hatata
a_hatata@mans.edu.eg
2
associated professor in Electric Engineering Dept., Faculty of engineering, Mansoura Univ., Egypt
AUTHOR
H.
Elsayyad
3
Electrical Engineering Department, Mansoura University, Mansoura 35516, Egypt
LEAD_AUTHOR
ORIGINAL_ARTICLE
A Hybrid Dynamic Programming and Neural Network Approach to Unit Commitment with High Renewable Penetration.
This paper presents a solution of the unit commitment (UC) problem for an electrical grid, which contains conventional sources and renewable energy sources as well as storage units. To ensure economical with the stochastic nature of renewable sources, it is essential to develop an efficient forecasting model for renewable power generation. Forecasting model was built by using a hybrid Markov to forecast solar radiation, while, autoregressive integrated moving average model is used to predict wind speed. UC problem incorporates with forecasting, the proposed formulation aims to minimize total production cost. The total production cost includes the fuel costs, environmental cost, operation and maintenance cost (O&M cost), start-up cost, and shutdown cost. UC formulation is subject to multi-constraints. These constraints are system constraint, thermal unit constraints, renewable sources constraints and storage unit's constraint. Also, reserve coefficient is modified to overcome the variation and error of renewable source forecasting by developing two new reserves; up reserve and down spinning reserve. The unit commitment algorithm is solved by simple, fast, and accurate optimization technique. So, hybrid optimization technique used to solve UC is dynamic programming based on neural network. The proposed hybrid techniquemakes the solution faster and more accurate compared with the other techniques. The system under study in this paper is the standard IEEE 30 bus system, with wind speed and solar radiation data of the city of Florida, USA
https://bfemu.journals.ekb.eg/article_99332_84818ae6f3b3e6d20382dbc639bdbdd9.pdf
2020-06-30
7
17
10.21608/bfemu.2020.99332
Unit Commitment
Renewable Forecasting
storage system
Dynamic Program
Neural network
Sahar
Kaddah
skaddah@mans.edu.eg
1
Prof, Electrical Engineering Department, Faculty of Engineering Mansoura University, Egypt, She is the head of Electrical Engineering Department
AUTHOR
K.
Abo-Al-Ez
2
AUTHOR
Tamer
Megahed
3
Electrical Engineering Department Faculty of Engineering Mansoura University
LEAD_AUTHOR
M.
Osman
4
Electrical Engineering Department Faculty of Engineering Mansoura University
AUTHOR
ORIGINAL_ARTICLE
Enhancing Carbonation Process during Carbon Dioxide Capturing Applying Jetting Fountain Fluidized Bed.
- Carbon dioxide from fossil fuel burning is the major contributor to the greenhouse effect from human activities. Within the many options and actions for mitigation of greenhouse gas emissions, CO2 capture and storage is emerging as a viable option to achieve the very deep cuts in emissions that might be needed in the medium term. One promising means of CO2 capture for fossil fuels based power plants is to use a lime carbonation–calcination cycle. The aim of the current work is to enhance the carbonation process by applying jetting fountain fluidized bed. A jetting fountain fluidized bed reactor has been designed, fabricated and installed to carry out the experimental work. It has 105 mm ID and 4000 mm height. Jabal al-Tair limestone has been utilized as bed materials. During the tests a mixture of nitrogen and carbon dioxide, that simulates exhaust gases (15% CO2), is fed through a bed of lime particles. The lime particles are carbonated by capturing CO2. The concentration of CO2 is measured after the bed to estimate the quantities of CO2 that combined with the lime particles. The influences of operating conditions including bed temperature, fluidization velocity, jet air ratio and jet orifice height on the capture efficiency of CO2 have been studied. The findings of the present work indicate that the jetting fountain fluidized bed is more efficient in carbonation where the CaO conversion rate increases and the time required for full conversion reduces. Applying jetting fountain configuration enhances gas solids contact and improves the interphases mass exchange between bubbles and emulsion. The capture efficiency of CO2 rate was found to improve with bed temperature and fluidization velocity. On the other side, studying the influences of jet air ratio and jet orifice height demonstrate that there is an intermediate value at which the capture efficiency records an optimal
https://bfemu.journals.ekb.eg/article_99339_97ce990ae799b673dfa787473a91297e.pdf
2020-06-30
1
8
10.21608/bfemu.2020.99339
Fluidized Bed
limestone
CO2 capture
Ahmed
Alabeedy
2amalabeedy@gmail.com
1
Mechanical power engineering Dept., Faculty of engineering Mansoura University, Mansoura, Egypt
LEAD_AUTHOR
Ahmed
Hegazi
ahmedabd_elsallam@yahoo.com
2
Mechanical Engineering Department, University of Mansoura, CO 35516, Egypt
AUTHOR
Farouk
Okasha
3
Mechanical power engineering Dept., Faculty of engineering Mansoura University, Mansoura, Egypt
AUTHOR
ORIGINAL_ARTICLE
Effect of Tool Geometry, Feed Rate, and Rotational Speed of Thermal Friction Drilling Process on AISI 304 Stainless Steel.
The main purpose of this research paper is to study experimentally the effects of the thermal friction drilling process parameters such as the tool geometry, feed rate, and rotational speed, on the resultant bushing length, axial and radial forces, hole dimensional error, and roundness error, while drilling AISI 304 stainless steel sheets with different thicknesses using tungsten carbide tools. The experiments were conducted based on the design of experiments method. A test rig was manufactured at Showman Company ‒ Egypt to perform the experimental work, and the tools were offered by Flow drill Company ‒ Netherlands. Also Fuzzy Logic technique is applied to the obtained results to find the optimal drilling condition
https://bfemu.journals.ekb.eg/article_99343_74e99ec2a0306cbcbeb42aa528ee92b2.pdf
2020-06-30
9
15
10.21608/bfemu.2020.99343
Thermal friction drilling
Process parameters
Fuzzy Logic
Bushing length
Dimensional Error
roundness error
Axial force
Radial force
Sara
El-Bahloul
elbahloul.sara@gmail.com
1
Asst. Lect. Prod. & Mech. Design Eng. Dept., Faculty of Engineering, Mansoura University, Egyp
LEAD_AUTHOR
Hazem
El-Shourbagy
2
Lect. at Prod. & Mech. Design Eng. Dept., Faculty of Engineering, Mansoura University, Egypt
AUTHOR
Tawfik
Elmidany
3
Prof. at Production and Mechanical Design - Faculty of Engineering - Mansoura University
AUTHOR
ORIGINAL_ARTICLE
Modeling of Conjugate Heat Transfer.
- Conjugate heat transfer in ducts is one of the most popular research topics due to its wide engineering applications. Most of the interest on the heat transfer problems is the two cases of the uniform wall temperature and uniform heat flux. However, the heat-transfer problems with non-uniform heating are also investigated by a few studies. The purpose of this work is to obtain a more general simple expression for any heat flux density and temperature profiles using compact thermal model which offers many advantages over the traditional approach using the heat transfer coefficient (i.e. any space distribution, not just uniform). Thus, a steady state compact thermal model is established and used to study Conjugate heat transfer through circular duct. The flow is considered to be laminar and hydrodynamically fully developed through the entire duct length. The temperature distributions of the moving fluid inside the duct at different sections have been presented for all investigated cases.The compact thermal model also used to investigate temperature distribution and the heat flux at the interface for conjugate heat transfer.
https://bfemu.journals.ekb.eg/article_99354_017b890b4e2babcdb2edd6b8a54683d8.pdf
2020-06-30
16
23
10.21608/bfemu.2020.99354
conjugate heat transfer
Compact Thermal model
Heat Transfer Coefficient
laminar heat transfer
Mohamed
Elmarghany
mohamed_ragab@mans.edu.eg
1
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura 35516, Egypt
LEAD_AUTHOR
Mohamed
Mansour
mhsaadanym@mans.edu.eg
2
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura 35516, Egypt
AUTHOR
Ahmed
Sultan
3
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura 35516, Egypt
AUTHOR
Mohamed
Sabry
mnabil.sabry@gmail.com
4
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura 35516, Egypt
AUTHOR
ORIGINAL_ARTICLE
Performance Evaluation of Internally Cooled Adsorption Solid Desiccant Bed.
In the present work, an experimental investigation on the adsorption and desorption operations in an internally cooled solid desiccant bed has been made. Experimental system involves a finned tube heat exchanger containing particles of silica gel, which is tested at different air flow rates and different of particles silica gel. The inlet and exit air temperature and relative humidity, air velocity, the inlet and exit water temperature and water flow rate are measured. Moisture removal rate is calculated. The results show that the internally cooling significantly enhances the performance of desiccant bed and the adsorption process can be done at nearly isothermal process. The enhancement in bed performance can be more than 50% due to internal cooling. Moisture removal rate sharply increases by increasing air flow rate in both adsorption and desorption processes. Increasing the regeneration temperature significantly improves the desorption performance of the bed for example by increasing it from 41.5 oC to 63 oC the moisture removal rate increases from 2.8 g/s to 5.4 g/s.
https://bfemu.journals.ekb.eg/article_99359_49066c37e1756eae781849f0cd7fe735.pdf
2020-06-30
24
30
10.21608/bfemu.2020.99359
Temperature - humidity
Adsorption
desorption - silica gel
moisture
water
air
flow - desiccant - cooling
Assem
Khalil
1
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
LEAD_AUTHOR
E.
Elshenawy
2
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
AUTHOR
S.
Elsayed
3
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
AUTHOR
A.
Nashwan
4
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
AUTHOR
ORIGINAL_ARTICLE
Comparative Experimental Study of Low GWP Alternative for R134a in a Walk-in Cold Room.
The environmental problems induced by the ongoing increase in the global worming potential (GWP) pose a significant interest among researchers. It was found that, the currently used refrigerants are with high GWP [1], so that it becomes necessary to search for alternatives to these refrigerants that can properly operate on the same systems but with low GWP. Therefore a walk-in cold room working with vapor compression cycle is constructed to compare the performance of the high GWP refrigerant R134a to low GWP refrigerant R1234ze in a trail to provide a solution to the problem of high GWP of refrigerants currently used in cold rooms. The results obtained in this study have shown that, the cooling capacity of R1234ze was lower than that of R134a by 2% to 13%. The lowest evaporating temperature that could be reached for R1234ze is -13 oC while the lowest temperature of R134a is – 30 oC. Regarding the power consumption, R1234ze has lower power consumption than R134a by about 9% to 15% therefore it can be concluded that R 1234ze can be recommended to be used at high and medium evaporating temperature after carrying out the modification on the refrigeration cycle
https://bfemu.journals.ekb.eg/article_99362_88f04268843d32674eb3d3588df6fedb.pdf
2020-06-30
31
40
10.21608/bfemu.2020.99362
Al-saeed
Khalil
1
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
LEAD_AUTHOR
A.
Kabeel
2
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
AUTHOR
M.
Bassuoni
3
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
AUTHOR
M.
Raslan
4
Tanta University, Faculty of Engineering, Mechanical Power Dept., Egypt.
AUTHOR
ORIGINAL_ARTICLE
Kinetic Energy and Momentum Coefficients for Egyptian Irrigation Canals.
The main objective of this research work is to investigate the energy coefficient (α) and momentum coefficient (β) for some Egyptian irrigation canals. Six cases of study from them having different degrees, starting from rayyahs to distributer canals with 10 successive cross sections for each reach, were carefully selected with discharge values ranged from 489.7 m3/s to 0.4 m3/s. The different properties and flow characteristics of each cross section were obtained. The arithmetic method was used in the computation process of α and β values due to its accuracy using a prepared excel program to facilitate the calculations. It was found that the computed values of α and β approximately match with Chow’s table with average values of about 1.30 and 1.11 respectively, for canals under study, which could be used for field applications. It was also found that the average values of α and β for each canal increased with the increase of the canal degree but the maximum and the minimum values may be independent of the canal degree. General relationships relating α and β for each canal and for all canals under study have been derived. Moreover, correlation relationships for both α and β with a ratio correlating maximum and mean velocities ( ), Manning’s roughness coefficient (n), and different values of discharge and channel characteristics were performed. The cross section properties had intangible effect on the values of both α and β but these values were strongly dependent on the velocity distribution shape. Froude number had a pronounced effect on the value of α and β but Reynolds number could have a negligible effect.
https://bfemu.journals.ekb.eg/article_99368_6a4b83574ba735853f440115dc470344.pdf
2020-06-30
1
16
10.21608/bfemu.2020.99368
Energy coefficient
Momentum coefficient
Egyptian irrigation canals
Manning’s coefficient
Froude Number
Reynolds number
A.
Zidan
1
Prof., Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ
AUTHOR
M.
Abdalla
2
Assistant Prof., Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ
AUTHOR
S.
Khalaf
3
Lecturer, Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ
AUTHOR
A.
Saqr
4
Demonstrator, Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ
LEAD_AUTHOR
ORIGINAL_ARTICLE
Studying Scour Hole Development around Rectangular Bridge Piers.
This paper presents an experimental study of local scour around rectangular bridge pier through open channels (clear water scour). Tests were carried out on two rectangular pier models with a change in the pier length using different flow discharge. Through this, geometric properties of scour hole were studied such as length, width and depth. The bed of used flume was covered by false wooden bed. The soil was extracted from Nile river bed (Damietta branch, kafr el-tawila) d50 equal to 0.29mm and the soil was classified to poorly graded sand (SP). A wireless camera fixed on the model was used to observe the change in scour depth with time and other outer camera fixed above the model to observe the change in the total scour hole. Through conducting the experiments the flow depths were changed, therefore the velocities and difference Froude number (Fr) were gotten. A group of mathematical relationships were obtained which gathering the geometric properties of scour hole with flow properties. It’s noted that from the study result, the depth of scour hole is reaching to average values of 87% from the maximum scour depth in the first two hours, but the horizontal dimension of scour hole is increasing by 80% from the maximum scour length
https://bfemu.journals.ekb.eg/article_99373_006b96b60ea59ee398a98064bae1be8a.pdf
2020-06-30
17
25
10.21608/bfemu.2020.99373
Local Scour
Soil Sample
Pier Models
Froude Number
Bridge Pier
Wireless Camera
Open channels
Clear Water Scour & Scour Hole
M.
Abddalla
1
Assoc. Hydraulics Dept., Faculty of Engineering, Mansoura University.
AUTHOR
M.
Abdel Hady
2
Assistant Prof., Irrigation and Hydraulics Dept., Faculty of Engineering, Mansoura University
AUTHOR
M.
Ahmed
3
Teaching Assistant, Irrigation and Hydraulics Dept., Faculty of Engineering, Mansoura University.
LEAD_AUTHOR
ORIGINAL_ARTICLE
Acquiring Data for Highway Maintenance Using Fixed Terrestrial 3d Laser Scanning System.
this research emphasis on using laser scan technology with high positional accuracy and high density automation for modeling the road surface. Surface modeling is essential for all road maintenance applications. Road flexible pavement distresses will be classified and summarized. Five major categories of flexible pavement road distresses will be considered in this study. The study deals with issues of road surveying, the safety of surveyors, data acquisition methodology, data processing, assessment, analysis and achieved accuracy. The used methodology in this paper allows accurate determination of paving material volumes that should be milled off the upper layer of the road surface and the volume of the filling material required to achieve a smooth road surface. However, the present work shows that using terrestrial laser scanning technologies for modeling the road surface has advantages such as surveying speed, big roads, highways and tunnels. Also it provides the safety for surveyors and the absence of a disruption to traffic.
https://bfemu.journals.ekb.eg/article_99379_ded7075a41711a31f8d115ae75599150.pdf
2020-06-30
26
34
10.21608/bfemu.2020.99379
Mohammad
Alawi
mhalawi@uqu.edu.sa
1
Civil Engineering Dept., Umm Al-Qura University P.O. Box 7398 Makkah, KSA
LEAD_AUTHOR
ORIGINAL_ARTICLE
The Urban Environment of Zamalek Island between Public Opinion Thought and Legislation Governing.
The urban environment represents to man the field which he lives and practices his different activities in. Man has managed to create an environment to suit all his requirements due to his accumulated experiences, leading to legislations and standards to regulate the process of preservation and planning for this urban environment, and whoever follows the develop in the urban environment in Egyptian cities notices the positive reflection on the traditional architectural heritage and how it sustains the human life with its different requirements, and also the environmental deterioration experienced by the new urban environment due to serious failure in applying legislations and standards of planning and executing them from the authorities in charge. Knowing that the main objective of developing a system of urban legislation, is to find the tools available to the competent public authority which has the participation in planning and directing urban development operations and what relates to it of social and economic development with a focus on improving their efficiency and under what distinguishes it of the impact on individuals and communities, in addition to developing programs and development plans leading to creating and the evolution for a change. The research concluded from extrapolating the case of contemporary urban environment in the island of Zamalek to the lack of any system aims to achieve the distinctive character of the contemporary urbanism, which means that the dominant feature is the inconsistency and chaos, leading to the presence of an urbanism which is inappropriate with social factors and not compatible with the functional aspects which clearly appeared in the disintegration of social relations, and increasing manifestations of social isolation which led to a band between them, and the loss of aesthetics, which represents the repetition of interfaces on the streets, making it the most boring and monotonous, and the loss of identity and distinctive character to it, that is, it can be said that these laws and legislations, Overall, did not help to put an end to the problems of urban island, and also the access to sustainable architecture which accomplishes the needs and requirements of society and thus achieve the continuity of the identity of the community stemming from his commitment to his faith, traditions and culture
https://bfemu.journals.ekb.eg/article_99384_6058e764786cb39a7cd4fd3ca2730086.pdf
2020-06-30
1
18
10.21608/bfemu.2020.99384
البيئة العمرانية
التشريعات العمرانية - الاحتياجات الإنساني
Mohamed
ElSaied
drsalah22222@hotmail.com
1
Professor at Architectural Engineering Department, University of Mansoura, Egypt
AUTHOR
Alaa
El-Eashy
arabeskal_arch@yahoo.com
2
Department of Architecture Faculty of Engineering – Mansoura University
AUTHOR
Alaa
Elmanzlawi
metarch2016@gmail.com
3
Dept.of Architecture, Misr Academy of Engineering and Technology
LEAD_AUTHOR
ORIGINAL_ARTICLE
The Requirements of Internal Environment for Patients' Room Design in Hospital to Reduce the Risk of Falling the Patients. (Case Study Patients' Room of Oncology Center in Mansoura University).
The main aim of establishing cure premises is healing and recovery of illnesses and getting rid of pains. If the patient got infected with diseases or exposed to dangers inside the hospital, this is considered a demolition of the main aim of establishing this hospital because the hospital should be designed so that it can achieve the criteria of safety for patients, so we must keep a safe environment free from the dangers of patients' falling to the ground. The main aim of the research is to identify the principles and design criteria which help reducing the risk of falling patients inside the accommodation rooms. This can be achieved by studying number of requirements that should be considered when designing such as the factors concerning organization, spatial and unit accommodation planning for bathroom inside the room, Determine the internal characteristics of the environment such as lighting and finishes that determines the noise level. To achieve the goal the research deals with requirements of planning and design for these rooms to reduce the dangers of falling patients. This is done through a theoretical and analytical study that come to conclusions and provides recommendations on the design of patient rooms in hospitals.
https://bfemu.journals.ekb.eg/article_99387_acb34d6c46b8957de244af329563ce12.pdf
2020-06-30
19
30
10.21608/bfemu.2020.99387
البيئة الداخلية - خطر سقوط المرضي -غرف المرضي
المستشفيات
Heba
Abdu
arch_heba84@yahoo.com
1
Assistant Lecturer, Dep. of Architectural Engineering, Faculty of Engineering, Mansoura University
LEAD_AUTHOR
Sherif
Sheta
shetash11@yahoo.com
2
Associate Professor in Architecture- Dep., Faculty of Engineering, Mansoura University
AUTHOR
Wael
Moustafa
wael_seddik@yahoo.com
3
Associate Professor in Architecture- Dep., Faculty of Engineering, Mansoura University
AUTHOR