Abdulrahman Almarshoud - Academia.edu (original) (raw)
Papers by Abdulrahman Almarshoud
Future Sustainability, 2024
This paper presents a techno-economic investigation for utilizing photovoltaic solar energy in wa... more This paper presents a techno-economic investigation for utilizing photovoltaic solar energy in water pumping applications for the irrigation of Palm trees in the Qassim region in Saudi Arabia. The Analysis has been done by applying four technical indicators and three economic indicators on a real farm of palm trees. The investigation took into account the varied water demand for palm trees over the years, meteorological data of the region, the characteristics of the borehole, and the local market prices of PV system components. The investigation has been done using two options of PV systems: grid-connected system and standalone system. The results showed the superiority of the grid-connected system in spite of the unfair price of energy exchange with the utility grid. The results achieved are the Levelled cost of energy, which is in the range from 0.013 to 0.019 /kWh.Thestandardizedcostofproducedwaterisintherangefrom0.011to0.013/kWh. The standardized cost of produced water is in the range from 0.011 to 0.013 /kWh.Thestandardizedcostofproducedwaterisintherangefrom0.011to0.013/m3, and the simple payback time is in...
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Future sustainability, May 15, 2024
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Journal of Engineering and Computer Sciences, 2014
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Clean Technologies and Environmental Policy
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Utilization of solar energy in water pumping is one of the most economically viable photovoltaic ... more Utilization of solar energy in water pumping is one of the most economically viable photovoltaic (PV) applications especially in remote areas. The accurate sizing of PV array is essential, as under sizing will make the pumping system unable to satisfy the water demand. On the other hand, over sizing of PV array leads to extra cost. This paper presents a novel approach for sizing the PV array of water pumping systems. This approach depends on the solar irradiance data of the shortest sunny day over the year to increase the reliability of pumping system. This approach depends on determining the proper starting value of the solar irradiance on the global solar radiation curve for tilted or moving surfaces. A design algorithm has been proposed for applying this approach including the converting process of solar radiation values from horizontal surface to tilted surface. A case study from Buraydah city in the middle of Saudi Arabia has been selected for applying the sizing approach.
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200 A. F. Almarshoud Rule-Of-Thumb for Obtaining the Global Irradiance Incident 1 on Full Sun-Tra... more 200 A. F. Almarshoud Rule-Of-Thumb for Obtaining the Global Irradiance Incident 1 on Full Sun-Tracking Plane 2 3 A. F. Almarshoud 4 Dept. of Electrical Engineering, Qassim University, 5 Buraidah, Saudi Arabia 6 7 Abstract 8 This paper propose a new empirical method for obtaining the global irradiance incident on full sun-tracking plane for 9 clear sky case from the measured data of Direct normal irradiance and Diffuse horizontal irradiance only. The proposed 10 method has been verified by comparing its results with the results of the three famous isotropic models; Liu-Jordan 11 model, Koronakis model and Badescu model, using one-minute resolution metrological data measured by ground station 12 in Qassim university. The results showed good agreement between the results of the proposed method and the results of 13 the three isotropic models, the best agreement was during the peak hours of sunshine for all models. In general, the 14 presented results proved the validity of proposed met...
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Electrical energy consumption in residential buildings increases rapidly in Saudi Arabia. Nearly ... more Electrical energy consumption in residential buildings increases rapidly in Saudi Arabia. Nearly 11% of residential energy consumed is due to the use of electricity for water heating. The purpose of this work is to investigate the performance of using the evacuated tube solar water heating system in residential buildings. Six locations in different climatic regions over Saudi Arabia have been selected for the investigation using measured data of weather and solar radiation. The technical performance and the economic feasibility of using solar water heating system in the selected sites have been investigated using RET Screen program through determining the delivered heat, solar fraction, the reduction in CO2 emissions, the savings in energy and cost, payback time, net present value and the benefit to cost ratio. The study with current conditions showed that there is a promising feasibility of using evacuated tube solar water heating system with heat pipe in Saudi Arabia, especially r...
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Indian Journal of Science and Technology, 2019
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Science Trends, 2018
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Energy Policy, 2018
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Renewable and Sustainable Energy Reviews, 2016
This paper presents a review for the characteristics of solar resources in 32 sites across Saudi ... more This paper presents a review for the characteristics of solar resources in 32 sites across Saudi Arabia through determining the performance of a pilot photovoltaic system based on real time solar radiation data collected during the last two years. The investigation has been done for three possible of sun tracking modes: fixed tilt angle, 1-axis and 2-axis tracking modes. The performance characteristics have been determined using three indicators: yield factor, capacity factor and performance ratio. The simulation results showed high energy productivity for all the 32 sites over Saudi Arabia. The values of performance indicators are high compared with similar systems in different countries. The main purpose of this study is to explore the relative properties for some sites in Saudi Arabia regarding solar energy production.
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Journal of Engineering and Computer Sciences, Oct 31, 2011
This paper suggests a versatile electronic method for efficient start, speed-control, ... more This paper suggests a versatile electronic method for efficient start, speed-control, direction-reversal, and plugging braking of single-phase induction motors. This is achieved by feeding the two-stator windings of a split-single-phase induction motor via two forced-commutated solid-state converters. AC chopping technique with possible edges control is applied. Thereby, high starting torques and low starting currents are realized. Reversing the direction of rotation and plugging braking are achieved by interchanging the sequence of voltages applied on the stator windings. Also, speed control is achieved at high motor efficiency as AC chopping results in less harmonic contents. The paper computes dynamic and steady-state performance characteristics of the motor using the suggested method. Then it compares them with other methods. For this purpose, a state space mathematical model considering the discontinuities introduced by the electronic switches is developed to describe the system. Keywords: Single-phase induction motors, Control of motors, Solid-state control. List of symbols H : machine and load inertia constant, sec. i & u : p.u current and p.u voltage respectively p : normalized time operator R & X : p.u resistance and p.u reactance respectively T : torque, p.u α & β : firing angle and extinction angle respectively ωo & ωr : base speed and p.u rotor speed respectively Subscripts1 & 2 : stator- and rotor- side respectively a & m : auxiliary- and main- winding respectively d & q : direct- and quadrature- axis respectively e & l : electrical and load respectively
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Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)
This paper presents a new method for including the cross-saturation effect and the leakage path s... more This paper presents a new method for including the cross-saturation effect and the leakage path saturation effect together in the generalized model of a three phase induction machine. Four different cases of operation are investigated at load and no load. The machine performance has been determined with the help of a novel abc-dq circuit model. The model possesses the advantages of both the dq and direct phase model.
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This paper propose a new empirical method for obtaining the global irradiance incident on full su... more This paper propose a new empirical method for obtaining the global irradiance incident on full sun-tracking plane for clear sky case from the measured data of Direct normal irradiance and Diffuse horizontal irradiance only. The proposed method has been verified by comparing its results with the results of the three famous isotropic models; Liu-Jordan model, Koronakis model and Badescu model, using one-minute resolution metrological data measured by ground station in Qassim university. The results showed good agreement between the results of the proposed method and the results of the three isotropic models, the best agreement was during the peak hours of sunshine for all models. In general, the presented results proved the validity of proposed method especially in clear sky case.
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Clean Technologies and Environmental Policy, 2021
The present paper draws attention to the importance of localizing the value chain of photovoltaic... more The present paper draws attention to the importance of localizing the value chain of photovoltaic solar energy in Saudi Arabia based on the country’s vision for 2030 to meet the expected increase in energy demand. This paper describes various obstacles and enablers and shows the critical factors that restrain the development of the value chain of photovoltaic solar energy. In this paper, different phases of upstream and downstream activities of the photovoltaic industry value chain related to the current situation in Saudi Arabia were examined and analyzed. This paper further examines the capabilities of the local content of photovoltaic solar energy to determine the scenarios that can be adopted to enhance the photovoltaic solar energy industry. This paper analyzes the expected significant positive impact of localizing the value chain of the photovoltaic solar energy industry on the socioeconomic development, job creation, and technology transfer in Saudi Arabia. The paper concludes with recommendations to facilitate the expansion of the photovoltaic solar industry in Saudi Arabia.
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Alexandria Engineering Journal
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Australian Journal of Mechanical Engineering
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Journal of Heat Transfer
Mixed convection heat transfer characteristics from heat source located symmetrically inside squa... more Mixed convection heat transfer characteristics from heat source located symmetrically inside square enclosure and cooled by Al2O3/water-based nanofluid flow was experimentally investigated. The configuration was subjected to high levels of natural convection and low rates of nanofluid flow. The nanofluid thermophysical properties were characterized using the available correlations in the literatures except the viscosity which was measured and correlated in terms of the nanoparticles loading ratios. Comparative analysis indicated that the application of nanofluid could not guarantee heat transfer enhancement in configurations dominated by natural convection. Exception heat transfer enhancement was only found when very low nanoparticles loading ratio was applied. Instead, heat transfer degradation was found especially in the cases of highest nanoparticles loading ratios. Alternatively, heat transfer enhancement was observed when the forced convection effect was substantial at the high...
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Energy Efficiency
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Abstract Statistics show that the number of cars per capita in Syria is still low, but that the f... more Abstract Statistics show that the number of cars per capita in Syria is still low, but that the figure has more than doubled since 2004. Syria also suffers from inadequate public transport provision, poor infrastructure and the absence of suitable traffic management ...
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Future Sustainability, 2024
This paper presents a techno-economic investigation for utilizing photovoltaic solar energy in wa... more This paper presents a techno-economic investigation for utilizing photovoltaic solar energy in water pumping applications for the irrigation of Palm trees in the Qassim region in Saudi Arabia. The Analysis has been done by applying four technical indicators and three economic indicators on a real farm of palm trees. The investigation took into account the varied water demand for palm trees over the years, meteorological data of the region, the characteristics of the borehole, and the local market prices of PV system components. The investigation has been done using two options of PV systems: grid-connected system and standalone system. The results showed the superiority of the grid-connected system in spite of the unfair price of energy exchange with the utility grid. The results achieved are the Levelled cost of energy, which is in the range from 0.013 to 0.019 /kWh.Thestandardizedcostofproducedwaterisintherangefrom0.011to0.013/kWh. The standardized cost of produced water is in the range from 0.011 to 0.013 /kWh.Thestandardizedcostofproducedwaterisintherangefrom0.011to0.013/m3, and the simple payback time is in...
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Future sustainability, May 15, 2024
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Journal of Engineering and Computer Sciences, 2014
Bookmarks Related papers MentionsView impact
Clean Technologies and Environmental Policy
Bookmarks Related papers MentionsView impact
Utilization of solar energy in water pumping is one of the most economically viable photovoltaic ... more Utilization of solar energy in water pumping is one of the most economically viable photovoltaic (PV) applications especially in remote areas. The accurate sizing of PV array is essential, as under sizing will make the pumping system unable to satisfy the water demand. On the other hand, over sizing of PV array leads to extra cost. This paper presents a novel approach for sizing the PV array of water pumping systems. This approach depends on the solar irradiance data of the shortest sunny day over the year to increase the reliability of pumping system. This approach depends on determining the proper starting value of the solar irradiance on the global solar radiation curve for tilted or moving surfaces. A design algorithm has been proposed for applying this approach including the converting process of solar radiation values from horizontal surface to tilted surface. A case study from Buraydah city in the middle of Saudi Arabia has been selected for applying the sizing approach.
Bookmarks Related papers MentionsView impact
200 A. F. Almarshoud Rule-Of-Thumb for Obtaining the Global Irradiance Incident 1 on Full Sun-Tra... more 200 A. F. Almarshoud Rule-Of-Thumb for Obtaining the Global Irradiance Incident 1 on Full Sun-Tracking Plane 2 3 A. F. Almarshoud 4 Dept. of Electrical Engineering, Qassim University, 5 Buraidah, Saudi Arabia 6 7 Abstract 8 This paper propose a new empirical method for obtaining the global irradiance incident on full sun-tracking plane for 9 clear sky case from the measured data of Direct normal irradiance and Diffuse horizontal irradiance only. The proposed 10 method has been verified by comparing its results with the results of the three famous isotropic models; Liu-Jordan 11 model, Koronakis model and Badescu model, using one-minute resolution metrological data measured by ground station 12 in Qassim university. The results showed good agreement between the results of the proposed method and the results of 13 the three isotropic models, the best agreement was during the peak hours of sunshine for all models. In general, the 14 presented results proved the validity of proposed met...
Bookmarks Related papers MentionsView impact
Electrical energy consumption in residential buildings increases rapidly in Saudi Arabia. Nearly ... more Electrical energy consumption in residential buildings increases rapidly in Saudi Arabia. Nearly 11% of residential energy consumed is due to the use of electricity for water heating. The purpose of this work is to investigate the performance of using the evacuated tube solar water heating system in residential buildings. Six locations in different climatic regions over Saudi Arabia have been selected for the investigation using measured data of weather and solar radiation. The technical performance and the economic feasibility of using solar water heating system in the selected sites have been investigated using RET Screen program through determining the delivered heat, solar fraction, the reduction in CO2 emissions, the savings in energy and cost, payback time, net present value and the benefit to cost ratio. The study with current conditions showed that there is a promising feasibility of using evacuated tube solar water heating system with heat pipe in Saudi Arabia, especially r...
Bookmarks Related papers MentionsView impact
Indian Journal of Science and Technology, 2019
Bookmarks Related papers MentionsView impact
Science Trends, 2018
Bookmarks Related papers MentionsView impact
Energy Policy, 2018
Bookmarks Related papers MentionsView impact
Renewable and Sustainable Energy Reviews, 2016
This paper presents a review for the characteristics of solar resources in 32 sites across Saudi ... more This paper presents a review for the characteristics of solar resources in 32 sites across Saudi Arabia through determining the performance of a pilot photovoltaic system based on real time solar radiation data collected during the last two years. The investigation has been done for three possible of sun tracking modes: fixed tilt angle, 1-axis and 2-axis tracking modes. The performance characteristics have been determined using three indicators: yield factor, capacity factor and performance ratio. The simulation results showed high energy productivity for all the 32 sites over Saudi Arabia. The values of performance indicators are high compared with similar systems in different countries. The main purpose of this study is to explore the relative properties for some sites in Saudi Arabia regarding solar energy production.
Bookmarks Related papers MentionsView impact
Journal of Engineering and Computer Sciences, Oct 31, 2011
This paper suggests a versatile electronic method for efficient start, speed-control, ... more This paper suggests a versatile electronic method for efficient start, speed-control, direction-reversal, and plugging braking of single-phase induction motors. This is achieved by feeding the two-stator windings of a split-single-phase induction motor via two forced-commutated solid-state converters. AC chopping technique with possible edges control is applied. Thereby, high starting torques and low starting currents are realized. Reversing the direction of rotation and plugging braking are achieved by interchanging the sequence of voltages applied on the stator windings. Also, speed control is achieved at high motor efficiency as AC chopping results in less harmonic contents. The paper computes dynamic and steady-state performance characteristics of the motor using the suggested method. Then it compares them with other methods. For this purpose, a state space mathematical model considering the discontinuities introduced by the electronic switches is developed to describe the system. Keywords: Single-phase induction motors, Control of motors, Solid-state control. List of symbols H : machine and load inertia constant, sec. i & u : p.u current and p.u voltage respectively p : normalized time operator R & X : p.u resistance and p.u reactance respectively T : torque, p.u α & β : firing angle and extinction angle respectively ωo & ωr : base speed and p.u rotor speed respectively Subscripts1 & 2 : stator- and rotor- side respectively a & m : auxiliary- and main- winding respectively d & q : direct- and quadrature- axis respectively e & l : electrical and load respectively
Bookmarks Related papers MentionsView impact
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)
This paper presents a new method for including the cross-saturation effect and the leakage path s... more This paper presents a new method for including the cross-saturation effect and the leakage path saturation effect together in the generalized model of a three phase induction machine. Four different cases of operation are investigated at load and no load. The machine performance has been determined with the help of a novel abc-dq circuit model. The model possesses the advantages of both the dq and direct phase model.
Bookmarks Related papers MentionsView impact
This paper propose a new empirical method for obtaining the global irradiance incident on full su... more This paper propose a new empirical method for obtaining the global irradiance incident on full sun-tracking plane for clear sky case from the measured data of Direct normal irradiance and Diffuse horizontal irradiance only. The proposed method has been verified by comparing its results with the results of the three famous isotropic models; Liu-Jordan model, Koronakis model and Badescu model, using one-minute resolution metrological data measured by ground station in Qassim university. The results showed good agreement between the results of the proposed method and the results of the three isotropic models, the best agreement was during the peak hours of sunshine for all models. In general, the presented results proved the validity of proposed method especially in clear sky case.
Bookmarks Related papers MentionsView impact
Clean Technologies and Environmental Policy, 2021
The present paper draws attention to the importance of localizing the value chain of photovoltaic... more The present paper draws attention to the importance of localizing the value chain of photovoltaic solar energy in Saudi Arabia based on the country’s vision for 2030 to meet the expected increase in energy demand. This paper describes various obstacles and enablers and shows the critical factors that restrain the development of the value chain of photovoltaic solar energy. In this paper, different phases of upstream and downstream activities of the photovoltaic industry value chain related to the current situation in Saudi Arabia were examined and analyzed. This paper further examines the capabilities of the local content of photovoltaic solar energy to determine the scenarios that can be adopted to enhance the photovoltaic solar energy industry. This paper analyzes the expected significant positive impact of localizing the value chain of the photovoltaic solar energy industry on the socioeconomic development, job creation, and technology transfer in Saudi Arabia. The paper concludes with recommendations to facilitate the expansion of the photovoltaic solar industry in Saudi Arabia.
Bookmarks Related papers MentionsView impact
Alexandria Engineering Journal
Bookmarks Related papers MentionsView impact
Australian Journal of Mechanical Engineering
Bookmarks Related papers MentionsView impact
Journal of Heat Transfer
Mixed convection heat transfer characteristics from heat source located symmetrically inside squa... more Mixed convection heat transfer characteristics from heat source located symmetrically inside square enclosure and cooled by Al2O3/water-based nanofluid flow was experimentally investigated. The configuration was subjected to high levels of natural convection and low rates of nanofluid flow. The nanofluid thermophysical properties were characterized using the available correlations in the literatures except the viscosity which was measured and correlated in terms of the nanoparticles loading ratios. Comparative analysis indicated that the application of nanofluid could not guarantee heat transfer enhancement in configurations dominated by natural convection. Exception heat transfer enhancement was only found when very low nanoparticles loading ratio was applied. Instead, heat transfer degradation was found especially in the cases of highest nanoparticles loading ratios. Alternatively, heat transfer enhancement was observed when the forced convection effect was substantial at the high...
Bookmarks Related papers MentionsView impact
Energy Efficiency
Bookmarks Related papers MentionsView impact
Abstract Statistics show that the number of cars per capita in Syria is still low, but that the f... more Abstract Statistics show that the number of cars per capita in Syria is still low, but that the figure has more than doubled since 2004. Syria also suffers from inadequate public transport provision, poor infrastructure and the absence of suitable traffic management ...
Bookmarks Related papers MentionsView impact