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The Kingdom of Saudi Arabia (KSA) is considered one of the countries with the highest consumption of electric energy per capita. Moreover, during the period of 2007–2017, the consumption rate increased from 6.9 MWh to 9.6 MWh. On the other hand, the share of residential electricity consumption in the KSA constitutes the biggest portion of the total electric consumption, which was about 48% in 2017. The objectives of this work were to analyze the exergy and assess the economic and environmental impacts of energy consumption in the residential sector of the Qassim region to determine potential areas for energy rationalization. The consumption patterns of 100 surveyed dwellings were analyzed to establish energy consumption indicators and conduct exergy analysis. The performances of different consuming domestic items were also examined, and energy efficiency measures are proposed. The average yearly consumption per dwelling was determined, and the total energy and exergy efficiencies are 145% and 11.38%, respectively. The average shares of lighting, domestic appliances, water heaters, and air conditioning from the total yearly energy consumption were determined.
Radwan A. Almasri; A. F. Almarshoud; Hanafy M. Omar; Khaled Khodary Esmaeil; Mohammed Alshitawi. Exergy and Economic Analysis of Energy Consumption in the Residential Sector of the Qassim Region in the Kingdom of Saudi Arabia. Sustainability 2020, 12, 2606 .
AMA StyleRadwan A. Almasri, A. F. Almarshoud, Hanafy M. Omar, Khaled Khodary Esmaeil, Mohammed Alshitawi. Exergy and Economic Analysis of Energy Consumption in the Residential Sector of the Qassim Region in the Kingdom of Saudi Arabia. Sustainability. 2020; 12 (7):2606.
Chicago/Turabian StyleRadwan A. Almasri; A. F. Almarshoud; Hanafy M. Omar; Khaled Khodary Esmaeil; Mohammed Alshitawi. 2020. "Exergy and Economic Analysis of Energy Consumption in the Residential Sector of the Qassim Region in the Kingdom of Saudi Arabia." Sustainability 12, no. 7: 2606.
Systems dynamics and automatic control is classified as one of the toughest courses in the college of engineering at Qassim University according to the statistical analysis of the final grades. This motivated us to think about a new approach to teach this course by extending the design term project to include experimental part beside the theoretical analysis. This approach has become feasible due to the publicity of the low-cost microcontrollers such as the Arduino in the recent years. In this paper, we present our experience in conducting Arduino-based projects and how we used them to support the teaching of all the automatic control subjects in the course such as the mathematical modelling, the stability analysis, the controller design and the implementation of the PID controller. It was found that the new approach improves the attention and the overall performance of the students in the course which was reflected in the students’ marks in the quizzes and exams. Moreover, it motivated the students to be creative by utilising the control theory to design new systems that can be useful for their local community.
Hanafy M. Omar. Enhancing automatic control learning through Arduino-based projects. European Journal of Engineering Education 2017, 43, 652 -663.
AMA StyleHanafy M. Omar. Enhancing automatic control learning through Arduino-based projects. European Journal of Engineering Education. 2017; 43 (5):652-663.
Chicago/Turabian StyleHanafy M. Omar. 2017. "Enhancing automatic control learning through Arduino-based projects." European Journal of Engineering Education 43, no. 5: 652-663.
In this paper a tracking controller is designed for a helicopter plus slung load system. The controller designed is nonlinear and is based on the Backstepping method. First we develop a comprehensive nonlinear mathematical model of the helicopter and design the nonlinear Backstepping controller for trajectory tracking for the helicopter alone. Then we model the slung load mathematically as a slung load and integrate it to the helicopter system. In the next step we design the delayed feedback controller for load swing damping which works independent of the nonlinear tracking controller. The anti-swing controller for load is optimized for best performance by the differential evolution (DE). Finally we present the simulation and results to illustrate the effectiveness of the method.
Sami El-Ferik; Asim H. Syed; Hanafy M. Omar; Mohamed A. Deriche. Anti-Swing Nonlinear Path Tracking Controller for Helicopter Slung Load System. IFAC Proceedings Volumes 2013, 46, 134 -141.
AMA StyleSami El-Ferik, Asim H. Syed, Hanafy M. Omar, Mohamed A. Deriche. Anti-Swing Nonlinear Path Tracking Controller for Helicopter Slung Load System. IFAC Proceedings Volumes. 2013; 46 (30):134-141.
Chicago/Turabian StyleSami El-Ferik; Asim H. Syed; Hanafy M. Omar; Mohamed A. Deriche. 2013. "Anti-Swing Nonlinear Path Tracking Controller for Helicopter Slung Load System." IFAC Proceedings Volumes 46, no. 30: 134-141.
In this work, a systematic and simple procedure is proposed to develop an integrated fuzzy-based guidance law which consists of three fuzzy logic controllers. Each one of them is activated in a region of the interception. To allow smooth transition between these controllers, additional fuzzy-based switching system is introduced. The parameters of all the fuzzy controllers which include the distribution of the membership functions and the rules are initially obtained from the engineering experience by observing the function of each controller. Furthermore, these parameters are optimally tuned by tabu search technique through solving an optimization problem to minimize the interception time, the missile acceleration commands, and the miss distance. The simulation results show that the proposed technique is able to generate a guidance law that has better performance compared with the proportional navigation guidance law and the fuzzy guidance laws developed by engineering experience.
Hanafy M. Omar; M. A. Abido. Enhancement of Integrated Fuzzy-Based Guidance Law by Tabu Search. Arabian Journal for Science and Engineering 2012, 37, 2035 -2046.
AMA StyleHanafy M. Omar, M. A. Abido. Enhancement of Integrated Fuzzy-Based Guidance Law by Tabu Search. Arabian Journal for Science and Engineering. 2012; 37 (7):2035-2046.
Chicago/Turabian StyleHanafy M. Omar; M. A. Abido. 2012. "Enhancement of Integrated Fuzzy-Based Guidance Law by Tabu Search." Arabian Journal for Science and Engineering 37, no. 7: 2035-2046.
Hanafy Mohammad Omar. Anti-swing controllerbased on time-delayed feedback for helicopter slung load system near hover. Journal of Aerospace Technology and Management 2012, 4, 297 -306.
AMA StyleHanafy Mohammad Omar. Anti-swing controllerbased on time-delayed feedback for helicopter slung load system near hover. Journal of Aerospace Technology and Management. 2012; 4 (3):297-306.
Chicago/Turabian StyleHanafy Mohammad Omar. 2012. "Anti-swing controllerbased on time-delayed feedback for helicopter slung load system near hover." Journal of Aerospace Technology and Management 4, no. 3: 297-306.
Mohammed Abdulmalek Aldheeb; Raed Kafafy; Moumen Idres; Hanafy M. Omar; Mohammad A. Abido. Design optimization of micro air launch vehicle using differential evolution. Journal of Aerospace Technology and Management 2012, 4, 185 -196.
AMA StyleMohammed Abdulmalek Aldheeb, Raed Kafafy, Moumen Idres, Hanafy M. Omar, Mohammad A. Abido. Design optimization of micro air launch vehicle using differential evolution. Journal of Aerospace Technology and Management. 2012; 4 (2):185-196.
Chicago/Turabian StyleMohammed Abdulmalek Aldheeb; Raed Kafafy; Moumen Idres; Hanafy M. Omar; Mohammad A. Abido. 2012. "Design optimization of micro air launch vehicle using differential evolution." Journal of Aerospace Technology and Management 4, no. 2: 185-196.
The demand for submicrosatellites is growing rapidly. A new low-cost launching method is needed to launch these types of satellites. This can be done by launching from airplanes. By implementing air launching, there would be no restrictions on the launch site, the launch angle, and the launch direction. In this paper, trajectory optimization of the micro air-launch vehicle (MALV) is carried out using the particle swarm optimization method. The problem is treated as a parameter optimization problem, and it is formulated as a single objective constraint optimization problem with the explicit objective of maximizing the payload mass. The simulation results show the effectiveness of the proposed technique in solving the nonlinear optimal trajectory problem for MALV.
Hanafy M. Omar; Moumen Idres; Raed Kafafy. Particle swarm optimization of a micro air-launch vehicle trajectory. Canadian Aeronautics and Space Journal 2011, 57, 115 -120.
AMA StyleHanafy M. Omar, Moumen Idres, Raed Kafafy. Particle swarm optimization of a micro air-launch vehicle trajectory. Canadian Aeronautics and Space Journal. 2011; 57 (2):115-120.
Chicago/Turabian StyleHanafy M. Omar; Moumen Idres; Raed Kafafy. 2011. "Particle swarm optimization of a micro air-launch vehicle trajectory." Canadian Aeronautics and Space Journal 57, no. 2: 115-120.
Hanafy M. Omar; Mohammad Abido. Multiobjective Evolutionary Algorithm for Designing Fuzzy-Based Missile Guidance Laws. Journal of Aerospace Engineering 2011, 24, 89 -94.
AMA StyleHanafy M. Omar, Mohammad Abido. Multiobjective Evolutionary Algorithm for Designing Fuzzy-Based Missile Guidance Laws. Journal of Aerospace Engineering. 2011; 24 (1):89-94.
Chicago/Turabian StyleHanafy M. Omar; Mohammad Abido. 2011. "Multiobjective Evolutionary Algorithm for Designing Fuzzy-Based Missile Guidance Laws." Journal of Aerospace Engineering 24, no. 1: 89-94.