Haroun Al-janabi | University of Babylon (original) (raw)
Papers by Haroun Al-janabi
International Journal of Current Engineering and Technology, Jan 30, 2018
Applied sciences, May 9, 2023
Iraqi journal of mechanical and material engineering, 2009
World Academy of Science, Engineering and Technology, International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, Apr 20, 2011
Iraqi journal of mechanical and material engineering, 2009
Scholars' Press eBooks, Oct 27, 2016
The world is facing a two fold crises now, shortage of conventional energy sources and environmen... more The world is facing a two fold crises now, shortage of conventional energy sources and environmental pollution. A lot of research is work needed to find new clean and sustainable energy source. Solar energy is the most abundant source of energy which is clean and sustainable but the the conversion efficiency of this energy into a more useful form of energy like electrical energy is still very low, about 15%, in addition to its intermittent nature which needs energy storage system. Solar energy can be used to power absorption/adsorption system instead of electrical energy to produce cooling/refrigeration effect. The use of this technique helps to reduce electrical energy consumption, save money and reduce the production of greenhouse gases. This book explains the design steps and construction of a solar driven absorption/adsorption cooling/refrigeration system.
Al-Qadisiyah Journal for Engineering Sciences, 2015
In this study, a design and fabrication of intermittent solar absorption refrigeration unit was p... more In this study, a design and fabrication of intermittent solar absorption refrigeration unit was performed at Hillah city in Iraq)32.4 o , 44.4 o ). The absorption solar unit consists of parabolic trough concentrator (PTC) was used as solar rays mirror reflector with aperture area of 2 m 2 , carbon steel pipe inside a vacuum glass envelop with a diameter of 1.5 in as tubular receiver, condenser, storage tank, evaporator. The aqua ammonia solution) NH4OH)is used as working fluid with different concentration (25%, 30%, 35%, 40%). The validity and visibility of the unit were evaluated by measurements of pressures and temperatures at different parts of the unit during a year from May month 2014 to July month 2015. The maximum pressure and temperature is found to be 12 bar and 120 o C respectively. The coefficient of performance was in the range of 0.01-0.09.
Design Engineering, Nov 18, 2021
International Journal of Heat and Technology, Dec 31, 2022
International Journal of Heat and Technology, Nov 30, 2022
International Journal of Heat and Technology, Nov 30, 2022
Journal of University of Babylon for engineering sciences, Jul 1, 2018
IOP conference series, Feb 1, 2021
Making use of the superior thermal properties of nanofluids is now very common, especially with r... more Making use of the superior thermal properties of nanofluids is now very common, especially with regard to the cooling of photovoltaic panels to improve overall efficiency. In this work, a novel cooling system manufactured from 3 mm aluminium was attached to the rear of a monocrystalline photovoltaic module, and two volumetric concentrations of SiC/Water nanofluid were tested with different flow rates. These tests were carried out under outdoor climatic conditions in middle of Iraq at Babylon University (32.46 °N, 44.42°E) during both winter and summer. A theoretical model was thus developed in SolidWorks and simulated using ANSYS 18.2. The maximum enhancements in electrical and overall efficiency were found to be 50% and 82.41% in March with a 0.5% nanofluid concentration and 2 L/min flow rate, while the minimum enhancements were 35.4% and 34.01% in June, with a 0.1% nanofluid concentration and 0.5 L/min flow rate. The theoretical results showed good approximation to the experimental results, and the average deviation percentage of electrical efficiency for a photovoltaic/thermal system with nanofluid on 27 March was 5.58%, while on 3 June it was 11%.
Applied Mechanics and Materials
Meeting stringent emission regulations, the demand for environmentally friendly fuels is increasi... more Meeting stringent emission regulations, the demand for environmentally friendly fuels is increasing by the day. Alternative fuel must be burned alongside conventional fuel to increase the availability of such clean energy sources. The current experimental study investigates the characteristics of the premixed LPG flames with CO2 dilution in tube swirling and non-swirling burners. The study including testing the effects of equivalence ratios, φ, (0.8, 1, 1.2, & 1.4), CO2 dilution ratios (0%, 5%, 7.5%, & 10%), and aspect ratio of the non-swirling burner (2, 4, 6, 8, & 10). Two swirling burners with swirl number was tested, namely 0.78 & 0.48. The dilution of CO2 has been observed lengthens the flame, particularly at higher equivalence ratios and/or flow rates since there is more than one influence, they all agree on a similar influence on flame height. The flame shortens clearly when using a swirling burner. Besides, when increasing the swirl number, the flame height increases slightl...
Iraqi journal of mechanical and material engineering, 2008
Considering pollution problems today, investigations have been concentrated on lowering the conce... more Considering pollution problems today, investigations have been concentrated on lowering the concentration of toxic components in combustion products. A gasoline lead additive at a concentration of 0.6 g/l is used to provide a gasoline with an octane number of 98. In many countries methyl tertiary butyl ether (MTBE) is used instead of lead to produce gasoline with the same octane number. Presently, 15% by volume of MTBE is added to unleaded gasoline to provide a gasoline with an octane number of 98. However, the leaded gasoline is still used in many countries. The purpose of this research is to experimentally study the possibility of using ethanol as a lead / MTBE replacement for spark ignition engines fuels. The effect of ethanol addition to unleaded gasoline on the research octane number, performance and pollutant emission of the spark ignition engine is studied. A Ricardo E6/US engine is used in this study. Results showed that the use of 15.% by volume of ethanol is a good alternative for replacing lead or MTBE in gasoline fuel and the resulted blended fuel satisfies the global specifications. The results of the standard ASTM methods showed that with increasing the ethanol content, the research octane number of the blended fuel increases, while the Reid vapor pressure of the blended fuel initially increases to a maximum value at 10 % by volume ethanol and then decreases. The results also showed that the addition of ethanol, (from 0% to 30% by volume), increases the break power, break thermal efficiency and break specific fuel consumption, and reduces NOx, CO, and HC emissions. The higher useful compression ratio, which produced maximum break power, is directly proportional to ethanol percentage in the blended fuel.
In the present study, a solar collector is designed and constructed. The collector consists of pa... more In the present study, a solar collector is designed and constructed. The collector consists of parabolic trough of mild steel sheet and a helical coil receiver fabricated using copper tube positioned at the focal line of the trough. The copper tube is coated with black paint to increase its absorptivity. The system is fabricated and tested at Babylon University site in Hila city Iraq (32.4°latitude, 44.4° longitudinal) using water as working fluid under outdoor condition. The system is operated as a closed loop water circulation with a storage tank of 30 liter capacity contains 8 liters of water. Tests are carried out during the period from October to November 2018. The tests are performed with different circulation flow rate (1,1.5,2) l/min. Results show that the maximum helical coil surface temperature with non-circulation is 107.2 °C at 1.00 PM from 25th September and 75 °C with circulation at flow rate 1.5 l/min at 2.00 PM from 9th October. The maximum mean storage water temperature is 73.8 °C for flow rate 1.5 l/min at 2.00 PM from 9th October, 70.5°C for flow rate 1 l/min at 2.00 PM from 8th October and 69.1 °C for flow rate 2 l/min at 1.50 PM from 24th October.
Journal of renewable energy, 2015
Energy Conversion and Management, 1989
International Journal of Hydrogen Energy, Apr 1, 1999
International Journal of Current Engineering and Technology, Jan 30, 2018
Applied sciences, May 9, 2023
Iraqi journal of mechanical and material engineering, 2009
World Academy of Science, Engineering and Technology, International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, Apr 20, 2011
Iraqi journal of mechanical and material engineering, 2009
Scholars' Press eBooks, Oct 27, 2016
The world is facing a two fold crises now, shortage of conventional energy sources and environmen... more The world is facing a two fold crises now, shortage of conventional energy sources and environmental pollution. A lot of research is work needed to find new clean and sustainable energy source. Solar energy is the most abundant source of energy which is clean and sustainable but the the conversion efficiency of this energy into a more useful form of energy like electrical energy is still very low, about 15%, in addition to its intermittent nature which needs energy storage system. Solar energy can be used to power absorption/adsorption system instead of electrical energy to produce cooling/refrigeration effect. The use of this technique helps to reduce electrical energy consumption, save money and reduce the production of greenhouse gases. This book explains the design steps and construction of a solar driven absorption/adsorption cooling/refrigeration system.
Al-Qadisiyah Journal for Engineering Sciences, 2015
In this study, a design and fabrication of intermittent solar absorption refrigeration unit was p... more In this study, a design and fabrication of intermittent solar absorption refrigeration unit was performed at Hillah city in Iraq)32.4 o , 44.4 o ). The absorption solar unit consists of parabolic trough concentrator (PTC) was used as solar rays mirror reflector with aperture area of 2 m 2 , carbon steel pipe inside a vacuum glass envelop with a diameter of 1.5 in as tubular receiver, condenser, storage tank, evaporator. The aqua ammonia solution) NH4OH)is used as working fluid with different concentration (25%, 30%, 35%, 40%). The validity and visibility of the unit were evaluated by measurements of pressures and temperatures at different parts of the unit during a year from May month 2014 to July month 2015. The maximum pressure and temperature is found to be 12 bar and 120 o C respectively. The coefficient of performance was in the range of 0.01-0.09.
Design Engineering, Nov 18, 2021
International Journal of Heat and Technology, Dec 31, 2022
International Journal of Heat and Technology, Nov 30, 2022
International Journal of Heat and Technology, Nov 30, 2022
Journal of University of Babylon for engineering sciences, Jul 1, 2018
IOP conference series, Feb 1, 2021
Making use of the superior thermal properties of nanofluids is now very common, especially with r... more Making use of the superior thermal properties of nanofluids is now very common, especially with regard to the cooling of photovoltaic panels to improve overall efficiency. In this work, a novel cooling system manufactured from 3 mm aluminium was attached to the rear of a monocrystalline photovoltaic module, and two volumetric concentrations of SiC/Water nanofluid were tested with different flow rates. These tests were carried out under outdoor climatic conditions in middle of Iraq at Babylon University (32.46 °N, 44.42°E) during both winter and summer. A theoretical model was thus developed in SolidWorks and simulated using ANSYS 18.2. The maximum enhancements in electrical and overall efficiency were found to be 50% and 82.41% in March with a 0.5% nanofluid concentration and 2 L/min flow rate, while the minimum enhancements were 35.4% and 34.01% in June, with a 0.1% nanofluid concentration and 0.5 L/min flow rate. The theoretical results showed good approximation to the experimental results, and the average deviation percentage of electrical efficiency for a photovoltaic/thermal system with nanofluid on 27 March was 5.58%, while on 3 June it was 11%.
Applied Mechanics and Materials
Meeting stringent emission regulations, the demand for environmentally friendly fuels is increasi... more Meeting stringent emission regulations, the demand for environmentally friendly fuels is increasing by the day. Alternative fuel must be burned alongside conventional fuel to increase the availability of such clean energy sources. The current experimental study investigates the characteristics of the premixed LPG flames with CO2 dilution in tube swirling and non-swirling burners. The study including testing the effects of equivalence ratios, φ, (0.8, 1, 1.2, & 1.4), CO2 dilution ratios (0%, 5%, 7.5%, & 10%), and aspect ratio of the non-swirling burner (2, 4, 6, 8, & 10). Two swirling burners with swirl number was tested, namely 0.78 & 0.48. The dilution of CO2 has been observed lengthens the flame, particularly at higher equivalence ratios and/or flow rates since there is more than one influence, they all agree on a similar influence on flame height. The flame shortens clearly when using a swirling burner. Besides, when increasing the swirl number, the flame height increases slightl...
Iraqi journal of mechanical and material engineering, 2008
Considering pollution problems today, investigations have been concentrated on lowering the conce... more Considering pollution problems today, investigations have been concentrated on lowering the concentration of toxic components in combustion products. A gasoline lead additive at a concentration of 0.6 g/l is used to provide a gasoline with an octane number of 98. In many countries methyl tertiary butyl ether (MTBE) is used instead of lead to produce gasoline with the same octane number. Presently, 15% by volume of MTBE is added to unleaded gasoline to provide a gasoline with an octane number of 98. However, the leaded gasoline is still used in many countries. The purpose of this research is to experimentally study the possibility of using ethanol as a lead / MTBE replacement for spark ignition engines fuels. The effect of ethanol addition to unleaded gasoline on the research octane number, performance and pollutant emission of the spark ignition engine is studied. A Ricardo E6/US engine is used in this study. Results showed that the use of 15.% by volume of ethanol is a good alternative for replacing lead or MTBE in gasoline fuel and the resulted blended fuel satisfies the global specifications. The results of the standard ASTM methods showed that with increasing the ethanol content, the research octane number of the blended fuel increases, while the Reid vapor pressure of the blended fuel initially increases to a maximum value at 10 % by volume ethanol and then decreases. The results also showed that the addition of ethanol, (from 0% to 30% by volume), increases the break power, break thermal efficiency and break specific fuel consumption, and reduces NOx, CO, and HC emissions. The higher useful compression ratio, which produced maximum break power, is directly proportional to ethanol percentage in the blended fuel.
In the present study, a solar collector is designed and constructed. The collector consists of pa... more In the present study, a solar collector is designed and constructed. The collector consists of parabolic trough of mild steel sheet and a helical coil receiver fabricated using copper tube positioned at the focal line of the trough. The copper tube is coated with black paint to increase its absorptivity. The system is fabricated and tested at Babylon University site in Hila city Iraq (32.4°latitude, 44.4° longitudinal) using water as working fluid under outdoor condition. The system is operated as a closed loop water circulation with a storage tank of 30 liter capacity contains 8 liters of water. Tests are carried out during the period from October to November 2018. The tests are performed with different circulation flow rate (1,1.5,2) l/min. Results show that the maximum helical coil surface temperature with non-circulation is 107.2 °C at 1.00 PM from 25th September and 75 °C with circulation at flow rate 1.5 l/min at 2.00 PM from 9th October. The maximum mean storage water temperature is 73.8 °C for flow rate 1.5 l/min at 2.00 PM from 9th October, 70.5°C for flow rate 1 l/min at 2.00 PM from 8th October and 69.1 °C for flow rate 2 l/min at 1.50 PM from 24th October.
Journal of renewable energy, 2015
Energy Conversion and Management, 1989
International Journal of Hydrogen Energy, Apr 1, 1999