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The first-ever use of halloysite nanotube (HNT), a relatively low-cost nanomaterial abundantly available with minor toxicity for removing brilliant green dye from aqueous media, is reported. The factors affecting adsorption were studied by assessing the adsorption capacity, kinetics, and equilibrium thermodynamic properties. All the experiments were designed at a pH level of around 7. The Redlich-Peterson isotherm model fits best amongst the nine isotherm models studied. The kinetic studies data confirmed a pseudo model of the second order. Robotic investigations propose a rate-controlling advance being overwhelmed by intraparticle dispersion. The adsorbent features were interpreted using infrared spectroscopy and electron microscopy. Process optimization was carried out using Response Surface Methodology (RSM) through a dual section Fractional Factorial Experimental Design to contemplate the impact of boundaries on the course of adsorption. The examination of fluctuation (ANOVA) was utilized to consider the joined impact of the boundaries. The possibilities of the use of dye adsorbing HNT (“sludge”) for the fabrication of the composites using plastic waste are suggested.
Shareefraza J. Ukkund; Prasad Puthiyillam; Hashim M. Alshehri; Marjan Goodarzi; Syed Noeman Taqui; Ali E. Anqi; Mohammad Reza Safaei; Masood Ashraf Ali; Usman Taqui Syed; Rayees Afzal Mir; Ashraf Elfasakhany; Emad M. Eed; Irfanul Haque Siddiqui; Imran Mokashi; Manzoore Elahi M. Soudagar. Adsorption Method for the Remediation of Brilliant Green Dye Using Halloysite Nanotube: Isotherm, Kinetic and Modeling Studies. Applied Sciences 2021, 11, 8088 .
AMA StyleShareefraza J. Ukkund, Prasad Puthiyillam, Hashim M. Alshehri, Marjan Goodarzi, Syed Noeman Taqui, Ali E. Anqi, Mohammad Reza Safaei, Masood Ashraf Ali, Usman Taqui Syed, Rayees Afzal Mir, Ashraf Elfasakhany, Emad M. Eed, Irfanul Haque Siddiqui, Imran Mokashi, Manzoore Elahi M. Soudagar. Adsorption Method for the Remediation of Brilliant Green Dye Using Halloysite Nanotube: Isotherm, Kinetic and Modeling Studies. Applied Sciences. 2021; 11 (17):8088.
Chicago/Turabian StyleShareefraza J. Ukkund; Prasad Puthiyillam; Hashim M. Alshehri; Marjan Goodarzi; Syed Noeman Taqui; Ali E. Anqi; Mohammad Reza Safaei; Masood Ashraf Ali; Usman Taqui Syed; Rayees Afzal Mir; Ashraf Elfasakhany; Emad M. Eed; Irfanul Haque Siddiqui; Imran Mokashi; Manzoore Elahi M. Soudagar. 2021. "Adsorption Method for the Remediation of Brilliant Green Dye Using Halloysite Nanotube: Isotherm, Kinetic and Modeling Studies." Applied Sciences 11, no. 17: 8088.
Nutraceutical industrial fenugreek seed spent (NIFGS), a relatively low-cost material abundantly available with little toxicity is used in crystal violet (CV) dye remediation from aqueous media and reported in the present study. To access the adsorption capacity, the factors affecting it are kinetics and the equilibrium thermodynamics. All the experiments were designed at approximately pH 7. The adsorption isotherm model proposed by Langmuir fits better than the Freundlich isotherm model. Kinetic studies data confirm the pseudo-second order model. It is evident from thermodynamic parameter values that the process of adsorption is endothermic, physical and dynamic. The process optimization of independent variables that influence adsorption was carried out using response surface methodology (RSM) through bi-level fractional factorial experimental design (FEED). The analysis of variance (ANOVA) was implemented to investigate the combined effect of parameters influencing adsorption. The possibilities of using dye-adsorbed NIFGS (“sludge”) for the fabrication of the composites using plastic waste are suggested.
Syed Noeman Taqui; Mohan C.S.; Mohammad Shahab Goodarzi; Mohamed AbdElGhany Elkotb; Bibi Ahmadi Khatoon; Manzoore Elahi M. Soudagar; Isa Baba Koki; Ashraf Elfasakhany; Amany Salah Khalifa; Masood Ashraf Ali; Zaphar Saifullah; Irfanul Haque Siddiqui; Mohammad Reza Safaei; C. Ahamed Saleel. Sustainable Adsorption Method for the Remediation of Crystal Violet Dye Using Nutraceutical Industrial Fenugreek Seed Spent. Applied Sciences 2021, 11, 7635 .
AMA StyleSyed Noeman Taqui, Mohan C.S., Mohammad Shahab Goodarzi, Mohamed AbdElGhany Elkotb, Bibi Ahmadi Khatoon, Manzoore Elahi M. Soudagar, Isa Baba Koki, Ashraf Elfasakhany, Amany Salah Khalifa, Masood Ashraf Ali, Zaphar Saifullah, Irfanul Haque Siddiqui, Mohammad Reza Safaei, C. Ahamed Saleel. Sustainable Adsorption Method for the Remediation of Crystal Violet Dye Using Nutraceutical Industrial Fenugreek Seed Spent. Applied Sciences. 2021; 11 (16):7635.
Chicago/Turabian StyleSyed Noeman Taqui; Mohan C.S.; Mohammad Shahab Goodarzi; Mohamed AbdElGhany Elkotb; Bibi Ahmadi Khatoon; Manzoore Elahi M. Soudagar; Isa Baba Koki; Ashraf Elfasakhany; Amany Salah Khalifa; Masood Ashraf Ali; Zaphar Saifullah; Irfanul Haque Siddiqui; Mohammad Reza Safaei; C. Ahamed Saleel. 2021. "Sustainable Adsorption Method for the Remediation of Crystal Violet Dye Using Nutraceutical Industrial Fenugreek Seed Spent." Applied Sciences 11, no. 16: 7635.
Being an energy source of another origin, the compression ignition (CI) engine’s typical design parameters might not suit Simarouba oil methyl ester (SuOME). Present experimental investigation targets are determining the effects of engine design parameters, including fuel injection pressure and nozzle geometry, on the engine, concerning performance and emissions such as carbon monoxide (CO), unburnt hydrocarbon (HC), oxides of nitrogen (NOx), and smoke opacity, with SuOME as fuel. Comparisons of brake thermal efficiency (BTE) and different emissions from the engine tailpipe were performed for different fuel injection pressures and a number of injector holes and diameter of orifices were opened in the injector to find the optimum combination to run the engine with SuOME. It was observed that the combined effect of an increase in injection pressure of 240 bar from 205 bar, and increasing number of injector holes from three to six with reduced injector hole diameters from 0.2 to 0.3 mm, recorded higher brake thermal efficiency with reduced emission levels for the SuOME mode of operation compared to the baseline standard operation with SuOME. For 240 bar compared to 205 bar of injection pressure (IP) for SuOME, the BTE increased by 2.35% and smoke opacity reduced by 1.45%. For six-hole fuel injectors compared to three-hole injectors, the BTE increased by 3.19%, HC reduced by 9.5%, and CO reduced by 14.7%. At 240 bar IP, with the six-hole injector having a 0.2 mm hole diameter compared to the 0.3 mm hole diameter, the BTE increased by 5%, HC reduced by 5.26%, CO reduced by 25.61%, smoke reduced by 10%, while NOx increased marginally by 0.27%. Hence, the six-hole FI, 240 IP, 0.2 mm FI diameter holes are suitable for diesel engine operation fueled by Simarouba biodiesel.
Keerthi Kumar N.; N. R. Banapurmath; T. K. Chandrashekar; Jatadhara G. S.; Manzoore Elahi M. Soudagar; Ali E. Anqi; M. A. Mujtaba; Marjan Goodarzi; Ashraf Elfasakhany; Irfanul Haque Siddiqui; Masood Ashraf Ali. Effect of Parameters Behavior of Simarouba Methyl Ester Operated Diesel Engine. Energies 2021, 14, 4973 .
AMA StyleKeerthi Kumar N., N. R. Banapurmath, T. K. Chandrashekar, Jatadhara G. S., Manzoore Elahi M. Soudagar, Ali E. Anqi, M. A. Mujtaba, Marjan Goodarzi, Ashraf Elfasakhany, Irfanul Haque Siddiqui, Masood Ashraf Ali. Effect of Parameters Behavior of Simarouba Methyl Ester Operated Diesel Engine. Energies. 2021; 14 (16):4973.
Chicago/Turabian StyleKeerthi Kumar N.; N. R. Banapurmath; T. K. Chandrashekar; Jatadhara G. S.; Manzoore Elahi M. Soudagar; Ali E. Anqi; M. A. Mujtaba; Marjan Goodarzi; Ashraf Elfasakhany; Irfanul Haque Siddiqui; Masood Ashraf Ali. 2021. "Effect of Parameters Behavior of Simarouba Methyl Ester Operated Diesel Engine." Energies 14, no. 16: 4973.
In this investigation, biodiesel was produced from Moringa oleifera oil through a transesterification process at operating conditions including a reaction temperature of 60 °C, catalyst concentration of 1% wt., reaction time of 2 h, stirring speed of 1000 rpm and methanol to oil ratio of 8.50:1. Biodiesel blends, B10 and B20, were tested in a compression ignition engine, and the performance and emission characteristics were analyzed and compared with high-speed diesel. The engine was operated at full load conditions with engine speeds varying from 1000 rpm to 2400 rpm. All the performance and exhaust pollutants results were collected and analyzed. It was found that MOB10 produced lower BP (7.44%), BSFC (7.51%), and CO2 (7.7%). The MOB10 also reduced smoke opacity (24%) and HC (10.27%). Compared to diesel, MOB10 also increased CO (2.5%) and NOx (9%) emissions.
Manzoore Soudagar; Haris Khan; T. Khan; Luqman Razzaq; Tahir Asif; M. Mujtaba; Abrar Hussain; Muhammad Farooq; Waqar Ahmed; Kiran Shahapurkar; Azham Alwi; T. Ibrahim; Usama Ishtiaq; Ashraf Elfasakhany; Maughal Ali Baig; Mohammad Goodarzi; Mohammad Safaei. Experimental Analysis of Engine Performance and Exhaust Pollutant on a Single-Cylinder Diesel Engine Operated Using Moringa Oleifera Biodiesel. Applied Sciences 2021, 11, 7071 .
AMA StyleManzoore Soudagar, Haris Khan, T. Khan, Luqman Razzaq, Tahir Asif, M. Mujtaba, Abrar Hussain, Muhammad Farooq, Waqar Ahmed, Kiran Shahapurkar, Azham Alwi, T. Ibrahim, Usama Ishtiaq, Ashraf Elfasakhany, Maughal Ali Baig, Mohammad Goodarzi, Mohammad Safaei. Experimental Analysis of Engine Performance and Exhaust Pollutant on a Single-Cylinder Diesel Engine Operated Using Moringa Oleifera Biodiesel. Applied Sciences. 2021; 11 (15):7071.
Chicago/Turabian StyleManzoore Soudagar; Haris Khan; T. Khan; Luqman Razzaq; Tahir Asif; M. Mujtaba; Abrar Hussain; Muhammad Farooq; Waqar Ahmed; Kiran Shahapurkar; Azham Alwi; T. Ibrahim; Usama Ishtiaq; Ashraf Elfasakhany; Maughal Ali Baig; Mohammad Goodarzi; Mohammad Safaei. 2021. "Experimental Analysis of Engine Performance and Exhaust Pollutant on a Single-Cylinder Diesel Engine Operated Using Moringa Oleifera Biodiesel." Applied Sciences 11, no. 15: 7071.
Tunnel lighting is the most significant component in total energy consumption in the whole infrastructure. Hence, various lighting control strategies based on light-emitting diode (LED) technology have been investigated to conserve energy by decreasing luminaires’ operating time. In this study, four kinds of tunnel lighting control strategies and the development of their associated technologies are evaluated: no-control low-consumption lamps (LCL), time-scheduling control strategy (TSCS), daylight adaptation control strategy (DACS), and intelligent control strategy (ICS). This work investigates the relationship between initial investment and electrical costs as a function of tunnel length (L) and daily traffic volume (N) for the four control strategies. The analysis was performed using 100-day data collected in eleven Chinese tunnels. The tunnel length (L) ranged from 600 m to 3300 m and the daily traffic volume (N) ranged from 700 to 2500. The results showed that initial investment costs increase with L for all control strategies. Also, the electricity costs for the LCL, TSCS, and DACS strategies increased linearly with L, whereas the electricity cost for the ICS strategy has an exponential growth with L and N. The results showed that for a lifetime equal to or shorter than 218 days, the LCL strategy offered the best economical solution; whereas for a lifetime longer than 955 days, the ICS strategy offered the best economical solution. For a lifetime between 218 and 955 days, the most suitable strategy varies with tunnel length and traffic volume. This study’s results can guide the decision-making process during the tunnel lighting system’s design stage.
Li Qin; Antonio Peña-García; Arturo Leon; Jian-Cheng Yu. Comparative Study of Energy Savings for Various Control Strategies in the Tunnel Lighting System. Applied Sciences 2021, 11, 6372 .
AMA StyleLi Qin, Antonio Peña-García, Arturo Leon, Jian-Cheng Yu. Comparative Study of Energy Savings for Various Control Strategies in the Tunnel Lighting System. Applied Sciences. 2021; 11 (14):6372.
Chicago/Turabian StyleLi Qin; Antonio Peña-García; Arturo Leon; Jian-Cheng Yu. 2021. "Comparative Study of Energy Savings for Various Control Strategies in the Tunnel Lighting System." Applied Sciences 11, no. 14: 6372.
This study reports the results of a pilot study on spatiotemporal characteristics of drivers’ visual behavior while driving in three different luminance levels in a tunnel. The study was carried out in a relatively long tunnel during the daytime. Six experienced drivers were recruited to participate in the driving experiment. Experimental data of pupil area and fixation point position (at the tunnel’s interior zone: 1566 m long) were collected by non-intrusive eye-tracking equipment at three luminance levels (2 cd/m2, 2.5 cd/m2, and 3 cd/m2). Fixation maps (color-coded maps presenting distributed data) were created based on fixation point position data to quantify changes in visual behavior. The results demonstrated that luminance levels had a significant effect on pupil areas and fixation zones. Fixation area and average pupil area had a significant negative correlation with luminance levels during the daytime. In addition, drivers concentrated more on the front road pavement, the top wall surface, and the cars’ control wheels. The results revealed that the pupil area had a linear relationship with the luminance level. The limitations of this research are pointed out and the future research directions are also prospected.
Li Qin; Qi-Lei Cao; Arturo Leon; Ying-Na Weng; Xu-Hua Shi. Use of Pupil Area and Fixation Maps to Evaluate Visual Behavior of Drivers inside Tunnels at Different Luminance Levels—A Pilot Study. Applied Sciences 2021, 11, 5014 .
AMA StyleLi Qin, Qi-Lei Cao, Arturo Leon, Ying-Na Weng, Xu-Hua Shi. Use of Pupil Area and Fixation Maps to Evaluate Visual Behavior of Drivers inside Tunnels at Different Luminance Levels—A Pilot Study. Applied Sciences. 2021; 11 (11):5014.
Chicago/Turabian StyleLi Qin; Qi-Lei Cao; Arturo Leon; Ying-Na Weng; Xu-Hua Shi. 2021. "Use of Pupil Area and Fixation Maps to Evaluate Visual Behavior of Drivers inside Tunnels at Different Luminance Levels—A Pilot Study." Applied Sciences 11, no. 11: 5014.
The increasing need of the modern era of technology for better ways to increase the heat transfer performance of thermal systems has made nanoliquids much more critical than they have been for the previous two decades. With such demand in mind, the Carreau-Yasuda nanofluid in the presence of motile microorganisms and thermal radiation along with Robin’s boundary conditions has been scrutinized. The controlling PDEs are cracked into ordinary differentials through suitable similarity transformation. The transformed ODEs are solved numerically utilizing bvp4c built-in MATLAB computational software. The graphical results of the main parameters against the velocity profile, temperature profile, and solutal field of nanoparticles and motile microorganisms' concentration are illustrated through graphs. Furthermore, the consequence of the involved parameters on the heat transfer rate is also deliberated and offered through table values. This study analyzed that velocity is a declining function of magnetic parameter and buoyancy ratio parameter. Besides, the additional amount of thermal radiation improves the heat transport rate. The concentration field is an escalating function of the thermophoresis parameter. Furthermore, microorganisms’ profile is boosted up by enlarging the magnitudes of microorganism’s Biot number.
Hassan Waqas; Umar Farooq; Shan Ali Khan; Hashim M. Alshehri; Marjan Goodarzi. Numerical analysis of dual variable of conductivity in bioconvection flow of Carreau–Yasuda nanofluid containing gyrotactic motile microorganisms over a porous medium. Journal of Thermal Analysis and Calorimetry 2021, 145, 2033 -2044.
AMA StyleHassan Waqas, Umar Farooq, Shan Ali Khan, Hashim M. Alshehri, Marjan Goodarzi. Numerical analysis of dual variable of conductivity in bioconvection flow of Carreau–Yasuda nanofluid containing gyrotactic motile microorganisms over a porous medium. Journal of Thermal Analysis and Calorimetry. 2021; 145 (4):2033-2044.
Chicago/Turabian StyleHassan Waqas; Umar Farooq; Shan Ali Khan; Hashim M. Alshehri; Marjan Goodarzi. 2021. "Numerical analysis of dual variable of conductivity in bioconvection flow of Carreau–Yasuda nanofluid containing gyrotactic motile microorganisms over a porous medium." Journal of Thermal Analysis and Calorimetry 145, no. 4: 2033-2044.
The need for fresh drinking water is increasing rapidly, and drinking water availability reduces day by day. Solar desalination is a viable option to change saltwater to fresh drinkable water. Solar still used for desalination includes processes like heating, evaporation, and condensation. The major problem faced by solar stills is that they have low productivity. Therefore, high demand for freshwater cannot be met. The present review aims to provide the researchers with an idea to select suitable methods for enhancing solar stills' performance. This article mainly focuses on the climatic, design, and operational parameters affecting the performance of solar stills. Results reveal that a combination of the incredible intensity of solar radiations, solar still type, and regions with optimum temperature can provide higher daily distillate output. Further, high productivity can be achieved with inclined solar stills by making an inclination angle equivalent to the location's latitude. A water depth of around 1 cm can provide the best output in terms of productivity for conventional solar stills. A combination of V-corrugated absorber plate with fins and energy storing materials coupled with external reflector plates can provide optimized conditions to enhance productivity. The performance of solar still can be improved by minimizing the gap between absorber plates and condensing cover. Finally, the sun tracking system, either single or dual axis in solar still, can enhance productivity.
Laxmikant D. Jathar; S. Ganesan; Kiran Shahapurkar; Manzoore Elahi M. Soudagar; M. A. Mujtaba; Ali E. Anqi; Muhammad Farooq; Abdulqhadar Khidmatgar; Marjan Goodarzi; Mohammad Reza Safaei. Effect of various factors and diverse approaches to enhance the performance of solar stills: a comprehensive review. Journal of Thermal Analysis and Calorimetry 2021, 1 -32.
AMA StyleLaxmikant D. Jathar, S. Ganesan, Kiran Shahapurkar, Manzoore Elahi M. Soudagar, M. A. Mujtaba, Ali E. Anqi, Muhammad Farooq, Abdulqhadar Khidmatgar, Marjan Goodarzi, Mohammad Reza Safaei. Effect of various factors and diverse approaches to enhance the performance of solar stills: a comprehensive review. Journal of Thermal Analysis and Calorimetry. 2021; ():1-32.
Chicago/Turabian StyleLaxmikant D. Jathar; S. Ganesan; Kiran Shahapurkar; Manzoore Elahi M. Soudagar; M. A. Mujtaba; Ali E. Anqi; Muhammad Farooq; Abdulqhadar Khidmatgar; Marjan Goodarzi; Mohammad Reza Safaei. 2021. "Effect of various factors and diverse approaches to enhance the performance of solar stills: a comprehensive review." Journal of Thermal Analysis and Calorimetry , no. : 1-32.
Analyzing microchannel heat sinks (MCHS) in terms of the second thermodynamic law is useful, and it is necessary to examine MCHSs in terms of irreversible factors. In this research, the second thermodynamic law analysis is conducted for graphene–platinum/water hybrid nanofluid flow to assess how a new cylindrical microchannel heat sink has wavy-shaped fins performs. A variety of Reynolds numbers, nanoparticle concentrations as well as wave amplitudes are used to simulate the problem, while the heat flux is constant. Fluent software is employed to solve the governing equations employing the control-volume method. The distributions of velocity and temperature are derived, and the entropy generation rate (including the generation of thermal as well as frictional entropy), along with the Bejan number, is obtained. The minimum values corresponding to the pointed parameters are, respectively, obtained as 7.63 × 10−2, 1.24 × 10−4, and 7.78 × 10−2, while the maximum magnitudes are 1.09 × 10−1, 1.49 × 10−3, and 1.09 × 10−1, respectively. Increasing each factor, including wave amplitude, particle fraction, and Reynolds number, causes a decline in the thermal entropy generation rate, while frictional entropy rises significantly. The Bejan number was obtained greater than 0.98 in all cases, which means that irreversibility mainly results from the thermal entropy generation. This could be a desirable finding, noting that increasing input variables reduced the thermal entropy generation rate. Finally, by employing an artificial neural network, a model is obtained for the entropy generation of entropy based on distinct factors of wave amplitude, nanofluid concentration, and Reynolds number.
Raouf Khosravi; Saeed Rabiei; Mohammad Khaki; Mohammad Reza Safaei; Marjan Goodarzi. Entropy generation of graphene–platinum hybrid nanofluid flow through a wavy cylindrical microchannel solar receiver by using neural networks. Journal of Thermal Analysis and Calorimetry 2021, 145, 1949 -1967.
AMA StyleRaouf Khosravi, Saeed Rabiei, Mohammad Khaki, Mohammad Reza Safaei, Marjan Goodarzi. Entropy generation of graphene–platinum hybrid nanofluid flow through a wavy cylindrical microchannel solar receiver by using neural networks. Journal of Thermal Analysis and Calorimetry. 2021; 145 (4):1949-1967.
Chicago/Turabian StyleRaouf Khosravi; Saeed Rabiei; Mohammad Khaki; Mohammad Reza Safaei; Marjan Goodarzi. 2021. "Entropy generation of graphene–platinum hybrid nanofluid flow through a wavy cylindrical microchannel solar receiver by using neural networks." Journal of Thermal Analysis and Calorimetry 145, no. 4: 1949-1967.
Real options theory is applied to quantify the value of operational flexibility intrinsic to the hydropower generation capacity from the perspective of US federal power marketing administrations. The option value in this model arises from the tension between the increase in current sales revenue and the increase in the exposure of future power shortages. Using Bonneville Power Administration as an example, we apply the proposed valuation framework, analyze the optimal management policy for Bonneville Power Administration and investigate the potential impacts of Wind Vision 2050.
Yong Chen; Nathan Gibson; Arpan Biswas; An Li; Hamid Bashiri; Erfaneh Sharifi; Claudio Fuentes; Christopher Hoyle; Arturo S. Leon; Christopher J. Skypeck. Valuation of operational flexibility: A case study of Bonneville power administration. Energy Economics 2021, 98, 105251 .
AMA StyleYong Chen, Nathan Gibson, Arpan Biswas, An Li, Hamid Bashiri, Erfaneh Sharifi, Claudio Fuentes, Christopher Hoyle, Arturo S. Leon, Christopher J. Skypeck. Valuation of operational flexibility: A case study of Bonneville power administration. Energy Economics. 2021; 98 ():105251.
Chicago/Turabian StyleYong Chen; Nathan Gibson; Arpan Biswas; An Li; Hamid Bashiri; Erfaneh Sharifi; Claudio Fuentes; Christopher Hoyle; Arturo S. Leon; Christopher J. Skypeck. 2021. "Valuation of operational flexibility: A case study of Bonneville power administration." Energy Economics 98, no. : 105251.
In the current study, an effort is carried out to study the influence of pentanol as low reactive fuel (LRF) along with diesel and Thevetia peruviana methyl ester (TPME) as high reactive fuels (HRF) in reactivity controlled compression ignition (RCCI) engine. The experiments are conducted on dual fuel engine at 50% load for RCCI mode of operation by varying pentanol percentage in injected fuels. The results revealed that RCCI mode of operation at 10% of pentanol in injected fuels exhibited higher brake thermal efficiency (BTE) of 22.15% for diesel and pentanol fuel combination, which is about 9.1% and 27.3% higher than other B20 and pentanol, B100 and pentanol fuel combinations respectively. As the percentage of pentanol increased in injected fuels, hydrocarbon (HC) and carbon monoxide (CO) emissions are increased while nitrogen oxide (NOx) and smoke emissions are decreased. Among various fuel combinations tested diesel and pentanol fuel combination gives lower HC, CO and smoke emissions and higher NOx emissions. At 10% pentanol in injected fuels, the highest heat release rate (HRR) and in-cylinder pressure are found for diesel and pentanol fuel combinations compared with other fuels.
P.A. Harari; N.R. Banapurmath; V.S. Yaliwal; Manzoore Elahi M. Soudagar; T.M. Yunus Khan; M.A. Mujtaba; Mohammad Reza Safaei; Naveed Akram; Marjan Goodarzi; Ashraf Elfasakhany; Ahmed I. El-Seesy. Experimental investigation on compression ignition engine powered with pentanol and thevetia peruviana methyl ester under reactivity controlled compression ignition mode of operation. Case Studies in Thermal Engineering 2021, 25, 100921 .
AMA StyleP.A. Harari, N.R. Banapurmath, V.S. Yaliwal, Manzoore Elahi M. Soudagar, T.M. Yunus Khan, M.A. Mujtaba, Mohammad Reza Safaei, Naveed Akram, Marjan Goodarzi, Ashraf Elfasakhany, Ahmed I. El-Seesy. Experimental investigation on compression ignition engine powered with pentanol and thevetia peruviana methyl ester under reactivity controlled compression ignition mode of operation. Case Studies in Thermal Engineering. 2021; 25 ():100921.
Chicago/Turabian StyleP.A. Harari; N.R. Banapurmath; V.S. Yaliwal; Manzoore Elahi M. Soudagar; T.M. Yunus Khan; M.A. Mujtaba; Mohammad Reza Safaei; Naveed Akram; Marjan Goodarzi; Ashraf Elfasakhany; Ahmed I. El-Seesy. 2021. "Experimental investigation on compression ignition engine powered with pentanol and thevetia peruviana methyl ester under reactivity controlled compression ignition mode of operation." Case Studies in Thermal Engineering 25, no. : 100921.
The improvement in performance has been observed by changing the injector nozzle's geometry of the dual-fuel liquid–gas engine. The combined effect of injector parameters and producer gas (PG) derived from the redgram stalk on the performance and emission characteristics of a dual-fuel diesel/Honge Oil Methyl Ester (HOME)-PG operated CI engine has been studied. The injector nozzles with 4, 5, and 6 holes (diameter of 0.2, 0.25, and 0.3 mm) were analyzed. Diesel-PG operation with 4 holes, 0.25 mm diameter nozzle and HOME-PG operation with 6 holes, 0.25 mm diameter nozzle resulted in better performance and lower emissions. Diesel-PG operation has 4.5% higher BTE (brake thermal efficiency) with a 4 hole nozzle and 0.7% higher for a 0.25 mm diameter 6 holes nozzle than HOME-PG operation. The HOME-PG operation results showed that the with an injection opening pressure of 240 bar, 6-hole nozzle, and a diameter of 0.25 mm have an improved BTE of 5.8% with emission levels 15–30% lower than those of other geometries.
K.M. Akkoli; N.R. Banapurmath; M.M. Shivashimpi; Manzoore Elahi M. Soudagar; Irfan Anjum Badruddin; Mashhour A. Alazwari; V.S. Yaliwal; M.A. Mujtaba; Naveed Akram; Marjan Goodarzi; Mohammad Reza Safaei; Harish Venu. Effect of injection parameters and producer gas derived from redgram stalk on the performance and emission characteristics of a diesel engine. Alexandria Engineering Journal 2021, 60, 3133 -3142.
AMA StyleK.M. Akkoli, N.R. Banapurmath, M.M. Shivashimpi, Manzoore Elahi M. Soudagar, Irfan Anjum Badruddin, Mashhour A. Alazwari, V.S. Yaliwal, M.A. Mujtaba, Naveed Akram, Marjan Goodarzi, Mohammad Reza Safaei, Harish Venu. Effect of injection parameters and producer gas derived from redgram stalk on the performance and emission characteristics of a diesel engine. Alexandria Engineering Journal. 2021; 60 (3):3133-3142.
Chicago/Turabian StyleK.M. Akkoli; N.R. Banapurmath; M.M. Shivashimpi; Manzoore Elahi M. Soudagar; Irfan Anjum Badruddin; Mashhour A. Alazwari; V.S. Yaliwal; M.A. Mujtaba; Naveed Akram; Marjan Goodarzi; Mohammad Reza Safaei; Harish Venu. 2021. "Effect of injection parameters and producer gas derived from redgram stalk on the performance and emission characteristics of a diesel engine." Alexandria Engineering Journal 60, no. 3: 3133-3142.
In this presentation, flow physics and natural heat transfer of water/Ag nanofluid are implemented by utilizing finite volume method (FVM) considering 0–6% of solid nanoparticles in volume fraction in an elliptical‐shaped enclosure affected by different attack angles range from 45° to 135°. This survey's foremost objective is to find the optimum attack angle for the highest heat transfer performance in the studied geometry. The attained results demonstrated that the Rayleigh number's augmentation leads to buoyancy force amplification and intensification of velocity components in the enclosure. Hence, the shapes of streamlines for each attack angle are different from the other states. The enhancement of the Rayleigh number causes better temperature distribution between cold and hot sources. The attack angle changes are the other factor for creating and intensity of the temperature gradients. By increasing the attack angle when the heat is transferred from the hot source to the top of the enclosure, the thermal distribution effects come with high gradients due to the flow balance disturbance and the changes in two sources' location. As the fluid moves, velocity components always change. In Rayleigh number of Ra = 1 × 103 due to a decrease of buoyancy force and negligible density changes in the enclosure, the average friction coefficient (Cfave) is not considerable, and for everyone studied attack angles, these changes are negligible. By augmenting attack angle (attack angles of 90° and 135°), because the tangential velocity component is weakened by gravity force, the values of created surface stress and fluid adhesion to the hot surface are less.
Seyed Alireza Rozati; Farnaz Montazerifar; Omid Ali Akbari; Siamak Hoseinzadeh; Vahid Nikkhah; Ali Marzban; Hadi Abdolvand; Marjan Goodarzi. Natural convection heat transfer of water/Ag nanofluid inside an elliptical enclosure with different attack angles. Mathematical Methods in the Applied Sciences 2020, 1 .
AMA StyleSeyed Alireza Rozati, Farnaz Montazerifar, Omid Ali Akbari, Siamak Hoseinzadeh, Vahid Nikkhah, Ali Marzban, Hadi Abdolvand, Marjan Goodarzi. Natural convection heat transfer of water/Ag nanofluid inside an elliptical enclosure with different attack angles. Mathematical Methods in the Applied Sciences. 2020; ():1.
Chicago/Turabian StyleSeyed Alireza Rozati; Farnaz Montazerifar; Omid Ali Akbari; Siamak Hoseinzadeh; Vahid Nikkhah; Ali Marzban; Hadi Abdolvand; Marjan Goodarzi. 2020. "Natural convection heat transfer of water/Ag nanofluid inside an elliptical enclosure with different attack angles." Mathematical Methods in the Applied Sciences , no. : 1.
Environmental concerns have urged a search for eco-friendly refrigerants in the refrigeration industry to overcome ozone depletion and global warming problems. Therefore, current research emphasizes frictional pressure drop during flow boiling of environment-friendly refrigerants (GWP<150), isobutane, HFC-152a, HFO-1234yf were tested against commonly reported HFC-134a. The data presented here was collected under heat flux-controlled conditions; the test piece was a round tube (1.60 mm diameter). The data collection was performed at 27 and 32 °C with mass velocities in 50–500 kg/m2s range. Effects of critical controlling parameters, like heat flux, mass velocity, exit vapor quality, operating pressure and medium, were studied in detail. It was observed that pressure drop increases along with mass velocity increment in the test piece and increases with exit vapor quality increment. The same was noticed to decrease with saturation temperature increment. Parametric effects and prediction of assessment methods are reported.
Muhammad Shujaat Ali; Zahid Anwar; M.A. Mujtaba; Manzoore Elahi M. Soudagar; Irfan Anjum Badruddin; Mohammad Reza Safaei; Asim Iqbal; Asif Afzal; Luqman Razzaq; Abdulqhadar Khidmatgar; Marjan Goodarzi. Two-phase frictional pressure drop with pure refrigerants in vertical mini/micro-channels. Case Studies in Thermal Engineering 2020, 23, 100824 .
AMA StyleMuhammad Shujaat Ali, Zahid Anwar, M.A. Mujtaba, Manzoore Elahi M. Soudagar, Irfan Anjum Badruddin, Mohammad Reza Safaei, Asim Iqbal, Asif Afzal, Luqman Razzaq, Abdulqhadar Khidmatgar, Marjan Goodarzi. Two-phase frictional pressure drop with pure refrigerants in vertical mini/micro-channels. Case Studies in Thermal Engineering. 2020; 23 ():100824.
Chicago/Turabian StyleMuhammad Shujaat Ali; Zahid Anwar; M.A. Mujtaba; Manzoore Elahi M. Soudagar; Irfan Anjum Badruddin; Mohammad Reza Safaei; Asim Iqbal; Asif Afzal; Luqman Razzaq; Abdulqhadar Khidmatgar; Marjan Goodarzi. 2020. "Two-phase frictional pressure drop with pure refrigerants in vertical mini/micro-channels." Case Studies in Thermal Engineering 23, no. : 100824.
Recently, a numerous number of houses has been built using AAC materials, which consume the most amount of energy in the building sector by Heating, ventilation, and air -conditioning (HVAC) systems. Thus, the most significant factor affecting the energy consumed by HVAC systems is the materials used in the building. Building models are important tools in determining the energy efficiency of buildings. Numerous strategies have been established to construct building models, such as the weight, gray, and black boxes, as well as hybrid models. Hybrid models have not been researched extensively, although they provide a reasonable representation of actual indoor conditions. Therefore, this study employs a hybrid calculation model for the analysis of physical and empirical correlations to evaluate thermal comfort in buildings, which reflects their energy consumption. The residential load factor (RLF) technique is adopted owing to its systematic organization and ease of use, which is achieved by dividing the model into submodels. The model is verified and validated by drawing a comparison with field measurements and the output obtained from ANSYS software. The actual field measurements and ANSYS outputs match the outputs of the proposed model; the results show small residual errors, indicating a well-defined model structure. The cost and energy savings of vernacular buildings and autoclaved aerated concrete (AAC) (or low-cost) buildings have been highly debated in Basra city. Models of these two different building materials are simulated within the MATLAB/Simulink environment. Their results indicate that the vernacular building has the highest energy saving potential up to 47.83% over 24 h a day. These results provide an excellent argument to realize the benefits of vernacular buildings by reducing the dependency on powered cooling.
Raad Z. Homod; Amjad Almusaed; Asaad Almssad; Manar K. Jaafar; Marjan Goodarzi; Khairul S.M. Sahari. Effect of different building envelope materials on thermal comfort and air-conditioning energy savings: A case study in Basra city, Iraq. Journal of Energy Storage 2020, 34, 101975 .
AMA StyleRaad Z. Homod, Amjad Almusaed, Asaad Almssad, Manar K. Jaafar, Marjan Goodarzi, Khairul S.M. Sahari. Effect of different building envelope materials on thermal comfort and air-conditioning energy savings: A case study in Basra city, Iraq. Journal of Energy Storage. 2020; 34 ():101975.
Chicago/Turabian StyleRaad Z. Homod; Amjad Almusaed; Asaad Almssad; Manar K. Jaafar; Marjan Goodarzi; Khairul S.M. Sahari. 2020. "Effect of different building envelope materials on thermal comfort and air-conditioning energy savings: A case study in Basra city, Iraq." Journal of Energy Storage 34, no. : 101975.
The current study aims to evaluate the performance and emission characteristics of a modified common rail direct injection (CRDI) diesel engine fueled by Ricinus communis biodiesel (RCME20), diesel (80%), and their blends with strontium-zinc oxide ([email protected]) nanoparticle additives. The [email protected] nanoparticles were synthesized using aqueous precipitation of zinc acetate dehydrate and strontium nitrate. Several characterization tests were performed to study the morphology and content of synthesized [email protected] nanoparticles. The [email protected] nanoparticles were steadily blended with RCME20-diesel fuel blend in mass fractions of 30, 60 and 90 ppm using a magnetic stirrer and ultrasonication process. For the long term stability of nanoparticles, Cetyl trimethylammonium bromide (CTAB) surfactant was added. The physicochemical properties of the fuel blends were measured using ASTM standards. The CRDI engine was operated at two compression ratios 17.5 and 19.5, 1000 bar injection pressure, 23.5°BTDC injection timing and constant speed. For enhanced swirl and turbulence, and improved spray quality lateral swirl combustion chamber and 6-hole fuel injector were used. The compression ratio of 19.5 and 60 ppm of [email protected] enhanced the overall engine characteristics compared to RCME20 fuel. The engine characteristics such as BTE, HRR, cylinder pressure increased by 20.83%, 24.35%, 9.55% and BSFC, ID, CD, smoke, CO, HC and CO2 reduced by 20.07%, 20.64%, 14.5%, 27.90%, 47.63%, 26.81%, 34.9%, while NOx slightly increased for all nanofuel blends.
Manzoore Elahi M. Soudagar; M.A. Mujtaba; Mohammad RezaSafaeibcd; Asif Afzale; Dhana Raju V; Waqar Ahmeda; N.R. Banapurmath; Nazia Hossainh; Shahid Bashiri; Irfan AnjumBadruddinjk; Marjan Goodarzil; Kiran Shahapurkar; Syed Noeman Taqui. Effect of [email protected] nanoparticles and Ricinus communis biodiesel-diesel fuel blends on modified CRDI diesel engine characteristics. Energy 2020, 215, 119094 .
AMA StyleManzoore Elahi M. Soudagar, M.A. Mujtaba, Mohammad RezaSafaeibcd, Asif Afzale, Dhana Raju V, Waqar Ahmeda, N.R. Banapurmath, Nazia Hossainh, Shahid Bashiri, Irfan AnjumBadruddinjk, Marjan Goodarzil, Kiran Shahapurkar, Syed Noeman Taqui. Effect of [email protected] nanoparticles and Ricinus communis biodiesel-diesel fuel blends on modified CRDI diesel engine characteristics. Energy. 2020; 215 ():119094.
Chicago/Turabian StyleManzoore Elahi M. Soudagar; M.A. Mujtaba; Mohammad RezaSafaeibcd; Asif Afzale; Dhana Raju V; Waqar Ahmeda; N.R. Banapurmath; Nazia Hossainh; Shahid Bashiri; Irfan AnjumBadruddinjk; Marjan Goodarzil; Kiran Shahapurkar; Syed Noeman Taqui. 2020. "Effect of [email protected] nanoparticles and Ricinus communis biodiesel-diesel fuel blends on modified CRDI diesel engine characteristics." Energy 215, no. : 119094.
In the present work, the boiling heat transfer coefficient (BHTC) and fluid flow characteristics of graphene oxide nanoplatelets (GONPs) nano-suspensions in an annular heat exchanger (AHEX) were experimentally investigated. The BHTC, pressure drop (PD) and the friction factor (FF) of the heat exchanger was quantified, and effects of various operating conditions including heat flux (HF), flow rate (FR), the temperature of the nano-suspension and the mass concentration (MC) of the GONPs on the HTC and the PD of the system was assessed. Results showed that by increasing the HF, the weight concentration of the GONPs, and the temperature of the working fluid, the BHTC of the system increases. Also, the presence of GONPs can augment the friction forces, viscosity, and, as a result, increase the PD and the FF of the system. For all the experiments, the BHTC of the system was more significant than water. A comparison between water-perfluorohexane and water- n-pentane nano-emulsions revealed that water-n pentane has better thermal performance and lower PD in comparison with perfluorohexane despite the presence of the GONPs within the bulk of the nano-emulsion.
Marjan Goodarzi; Iskander Tlili; Hazim Moria; Tawfeeq Abdullah Alkanhal; R. Ellahi; Ali E. Anqi; Mohammad Reza Safaei. Boiling heat transfer characteristics of graphene oxide nanoplatelets nano-suspensions of water-perfluorohexane (C6F14) and water-n-pentane. Alexandria Engineering Journal 2020, 59, 4511 -4521.
AMA StyleMarjan Goodarzi, Iskander Tlili, Hazim Moria, Tawfeeq Abdullah Alkanhal, R. Ellahi, Ali E. Anqi, Mohammad Reza Safaei. Boiling heat transfer characteristics of graphene oxide nanoplatelets nano-suspensions of water-perfluorohexane (C6F14) and water-n-pentane. Alexandria Engineering Journal. 2020; 59 (6):4511-4521.
Chicago/Turabian StyleMarjan Goodarzi; Iskander Tlili; Hazim Moria; Tawfeeq Abdullah Alkanhal; R. Ellahi; Ali E. Anqi; Mohammad Reza Safaei. 2020. "Boiling heat transfer characteristics of graphene oxide nanoplatelets nano-suspensions of water-perfluorohexane (C6F14) and water-n-pentane." Alexandria Engineering Journal 59, no. 6: 4511-4521.
In the present work, an attempt was made to experimentally quantify the boiling heat transfer coefficient (BHTC) of graphene oxide-water nano-suspension (NS) inflow boiling heat transfer regime. The NS was prepared at weight fractions of 0.025, 0.05, and 0.1% using the two-step method and further stabilized for 17 days (at wt% = 0.1). Results showed that the presence of graphene oxide nanoplatelets (GNPs) imposed an extreme fouling thermal resistance (FTR) to the surface, which caused a reduction in the BHTC over 1000 min of continuous operation after the CHF point. This was mainly due to the presence of the graphene oxide on the surface, which created a surficial fouling layer and heat accumulation on the surface. Instead, the sedimentation layer promoted the critical heat flux (CHF) point such that the point for water was 1370 kW/m2 reaching 1640 kW/m2 for NS at wt% = 0.1. Likewise, the highest BHTC of 17.4 kW/(m2K) at Re = 10,950 was obtained. Also, with increasing the heat flux and flow rate, the BHTC increased. The same trend was also identified with a mass fraction of GNPs up to CHF point. The increase in the BHTC was attributed to the intensification of the Brownian motion and thermophoresis effect in the boiling micro-layer close to the surface.
Marjan Goodarzi; Iskander Tlili; Hazim Moria; E.M. Cardoso; Tawfeeq Abdullah Alkanhal; Ali E. Anqi; Mohammad Reza Safaei. Boiling flow of graphene nanoplatelets nano-suspension on a small copper disk. Powder Technology 2020, 377, 10 -19.
AMA StyleMarjan Goodarzi, Iskander Tlili, Hazim Moria, E.M. Cardoso, Tawfeeq Abdullah Alkanhal, Ali E. Anqi, Mohammad Reza Safaei. Boiling flow of graphene nanoplatelets nano-suspension on a small copper disk. Powder Technology. 2020; 377 ():10-19.
Chicago/Turabian StyleMarjan Goodarzi; Iskander Tlili; Hazim Moria; E.M. Cardoso; Tawfeeq Abdullah Alkanhal; Ali E. Anqi; Mohammad Reza Safaei. 2020. "Boiling flow of graphene nanoplatelets nano-suspension on a small copper disk." Powder Technology 377, no. : 10-19.
In the present work, a series of tests were designed and conducted aiming at investigating the thermal response and performance of a pulsating heat pipe operating with graphene-water ethylene glycol nano-suspension. The heat pipe was tested at various applied heat values between 10 and 100 W, concentrations of 0.1 g/l to 2 g/l of graphene nanoplatelets dispersed in water-ethylene glycol, different filling ratios, and condenser temperatures. Thermal conductivity and viscosity of the nano-suspensions were experimentally measured at various concentrations. A response surface methodology model was developed to optimize the thermal performance of the heat pipe by minimizing the thermal resistance of the system. Results showed that the thermal resistance value decreases by increasing the concentration of the graphene nanoplatelets and also by increasing the heat load to the evaporator. Likewise, filling ratio and temperature of the condenser were found to have a complementary effect on the optimization of the performance of the heat pipe such that the minimum thermal resistance value of 0.36 K/W was obtained at 85 W and condenser temperature of 23 °C, filling ratio of 0.35 and concentration of 2 g/l. It was identified that the presence of the graphene nanoplatelets contributes to the promotion of heat transfer mechanisms due to the intensification in micro-scale phenomena such as Brownian motion and thermophoresis effect. Using nonlinear regression analysis, a correlation was developed to predict the thermal resistance value of the system with an accuracy of <8.7%.
Zhixiong Li; M.M. Sarafraz; Arash Mazinani; Hazim Moria; Iskander Tlili; Tawfeeq Abdullah Alkanhal; Marjan Goodarzi; Mohammad Reza Safaei. Operation analysis, response and performance evaluation of a pulsating heat pipe for low temperature heat recovery. Energy Conversion and Management 2020, 222, 113230 .
AMA StyleZhixiong Li, M.M. Sarafraz, Arash Mazinani, Hazim Moria, Iskander Tlili, Tawfeeq Abdullah Alkanhal, Marjan Goodarzi, Mohammad Reza Safaei. Operation analysis, response and performance evaluation of a pulsating heat pipe for low temperature heat recovery. Energy Conversion and Management. 2020; 222 ():113230.
Chicago/Turabian StyleZhixiong Li; M.M. Sarafraz; Arash Mazinani; Hazim Moria; Iskander Tlili; Tawfeeq Abdullah Alkanhal; Marjan Goodarzi; Mohammad Reza Safaei. 2020. "Operation analysis, response and performance evaluation of a pulsating heat pipe for low temperature heat recovery." Energy Conversion and Management 222, no. : 113230.
One of the important parameters in developing dry ice blasting nozzle is the high-speed dry ice pellets. However, many studies focus primarily only on its performance without considering the noise emission that comes from an operating nozzle. In this method, the central composite optimization tool has been used. The two-way mass momentum and energy exchange are successfully modeled using the two-way mass momentum model. As an attempt to theoretically verify the model accuracy, a comparison is conducted on the density, pressure, temperature, as well as Mach number ratios corresponding to various ratios of nozzle area. In return, the smallest value of the convergent angle results in the highest velocity of 516.75 m s−1, as well as the highest level of the acoustic power level of 144.36 dB. Besides, one of the vital influencing factors on the emitted acoustic power level is the turbulence intensity, which can achieve a maximum of 1% intensity for an angle of 20° at the throat section. Besides, the same negative sensitivity of around − 0.99% is provided by the velocity and acoustic power level, which is highly responsive toward the convergent angle variation. Furthermore, the optimum nozzle convergent angle for the minimization of the acoustic power level and maximization of the velocity is 7.03°. The novelty of this research lies in the findings on the effective convergent angle of the dry ice blasting nozzle that accelerates the particle flow and minimizes the noise emission from the operating nozzle.
Mohamad Nur Hidayat Mat; Nor Zelawati Asmuin; Faisal Md Basir; Mohammad Reza Safaei; Mohd Shareduwan Mohd Kasihmuddin; Taufiq Khairi Ahmad Khairuddin; Marjan Godarzi. Optimizing nozzle convergent angle using central composite design on the particle velocity and acoustic power level for single-hose dry ice blasting nozzle. Journal of Thermal Analysis and Calorimetry 2020, 144, 2159 -2173.
AMA StyleMohamad Nur Hidayat Mat, Nor Zelawati Asmuin, Faisal Md Basir, Mohammad Reza Safaei, Mohd Shareduwan Mohd Kasihmuddin, Taufiq Khairi Ahmad Khairuddin, Marjan Godarzi. Optimizing nozzle convergent angle using central composite design on the particle velocity and acoustic power level for single-hose dry ice blasting nozzle. Journal of Thermal Analysis and Calorimetry. 2020; 144 (6):2159-2173.
Chicago/Turabian StyleMohamad Nur Hidayat Mat; Nor Zelawati Asmuin; Faisal Md Basir; Mohammad Reza Safaei; Mohd Shareduwan Mohd Kasihmuddin; Taufiq Khairi Ahmad Khairuddin; Marjan Godarzi. 2020. "Optimizing nozzle convergent angle using central composite design on the particle velocity and acoustic power level for single-hose dry ice blasting nozzle." Journal of Thermal Analysis and Calorimetry 144, no. 6: 2159-2173.