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Adapting Integrated h.gh.Concentrated PV Modules and Evacuated Tube Collectors to Minimize Building Energy Consumption in h.t Climate

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Smart Grid and Renewable Energy 2019年第10期10卷 237-256页

作者： talal h. alzanki Kandil M. Kandil Public Auth.rity for Applied Education and Training (PAAET) Electronic Engineering Department College of Technological Studies Shuwaikh Kuwait Public Auth.rity for Applied Education and Training (PAAET) Applied Sciences Department College of Technological Studies Shuwaikh Kuwait

Energy consumption in buildings is considered a significant portion of gross power dissipation, so a great effort is required to design efficient construction. In severe h.t weath.r conditions as Kuwait, energy required for building cooling and h.ating results in a h.ge energy loads and consumption and accordingly h.gh.emission rates of carbon dioxide. So, th. main purpose of th. current work is to convert th. existing institutional building to near net-zero energy building (nNZEB) or into a net-zero energy building (NZEB). A combination of integrated h.gh.concentrated ph.tovoltaic (h.PV) solar modules and evacuated tube collectors (ETC) are proposed to provide domestic water h.ating, electricity load as well as cooling consumption of an institutional facility. An equivalent circuit model for single diode is implemented to evaluate triple junction h.PV modules efficiency considering concentration level and temperature effects. A code compatible with.TRNSYS subroutines is introduced to optimize evacuated tube collector efficiency. Th. developed models are validated th.ough.comparison with.experimental data available from literature. Th. efficiency of integrated h.PV-ETC unit is optimized by varying th. different system parameters. Transient simulation program (TRNSYS) is adapted to determine th. performance of various parts of h.PV-ETC system. Furth.rmore, a th.oretical code is introduced to evaluate th. environmental effects of th. proposed building wh.n integrated with.renewable energy systems. Th. integrated h.PV-ETC fully satisfies th. energy required for building ligh.ing and equipment. Utilizing h.PV modules of orientation 25? accomplish.s a minimum energy payback time of about 8 years. Integrated solar absorption ch.ller provides about 64% of th. annual air conditioning consumption needed for th. studied building. Th. energy payback period (EPT) or solar cooling system is about 18 years wh.ch.is significantly larger th.n th.t corresponding to h.PV due to th. e

关键词： h.gh Concentrated Ph.tovoltaic Evacuated Tube Collector Net-Zero Energy Building Avoided CO2 Emission

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Parameter Prediction of Stretch.Blow Molding Process of PET Using Neural Networks

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Journal of Software Engineering and Applications 2019年第7期12卷 278-292页

作者： talal h. alzanki Mutaz M. Jafar Electronic Engineering Department College of Technological Studies Public Authority for Applied Education and Training (PAAET) Shuwaikh Kuwait

Th.s study presents a parameter selection strategy developed for th. Stretch.Blow Molding (SBM) process to minimize th. weigh. of preforms used. Th. meth.d is based on a predictive model developed using Neural Networks. Th. temperature distribution model of th. preform was predicted using a 3-layer NN model with.supervised backpropagation learning. In addition, th. model was used to predict th. uniform air pressure applied inside th. preform, taking into account th. relationsh.p between th. internal air pressure and th. volume of th. preform. Parameters were validated using in situ tests and measurements performed on several weigh.s and length. of a 0.330 Liter Polyeth.lene Tereph.h.late (PET) bottles. Tests sh.wed th.t th. model adequately predicts both.th. blowing kinematics, mainly zone temperatures and blowing and stretch.ng pressures along th. walls of th. bottle wh.le maintaining th. bottle strength.and top load requirements. In th. second step, th. model was combined to automatically compute th. lowest preform weigh. th.t can be used for a particular 330 ml bottle design providing a uniform wall th.ckness distribution.

关键词： Stretch.Blow Molding (SBM) Process Polyeth.lene Tereph.h.late (PET) Bottles Temperature Distribution Model Uniform Wall Th.ckness Distribution

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Impact of UVB Solar Radiation on Ambient Temperature for Kuwait Desert Climate

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Smart Grid and Renewable Energy 2020年第8期11卷 103-125页

作者： Ibrah.m M. Kadad Kandil M. Kandil talal h. alzanki Public Auth.rity for Applied Education and Training (PAAET) Applied Sciences Department College of Technological Studies Shuwaikh Kuwait Public Auth.rity for Applied Education and Training (PAAET) Electronic Engineering Department College of Technological Studies Shuwaikh Kuwait

Th.s study examines th. correlation between solar UVB and different weath.r parameters in Kuwait climate. To ach.eve th.t purpose, an experimental outdoor facility is designed and set up at th. College of Tech.ologica... 详细信息

This study examines the correlation between solar UVB and different weather parameters in Kuwait climate. To achieve that purpose, an experimental outdoor facility is designed and set up at the College of Technological Studies, Kuwait for regular monitoring of solar global radiation, UVB radiation and ambient temperature in Kuwait from beginning of January 1st 2014 until the end of December 2019. Outcomes reveal that the change of solar UVB as well as global radiation through the whole day inaugurate the same behavior for the recorded data in clear day times. Statistical analysis is carried out to obtain a correlation linking UVB radiation and both ambient temperature and global solar radiation. Regression analysis of the current work shows that there is a solid correlation among UVB radiation and both ambient temperature and global solar radiation, especially for intermediate to small global solar radiation ranges. In addition, UV index is evaluated for various months at all day times. It is important to record that UV index with the maximum values is attained in May-August months through midday period. Also, UV index values do not surpass the accepted extreme value which is higher than 9 during any time of the study period.

关键词： Ambient Temperature UVB Radiation Solar Radiation UV Index Relative h.midity

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Assessment of h.gh.Concentrated Ph.tovoltaic/Th.rmal Collector in h.t Climate

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Smart Grid and Renewable Energy 2019年第5期10卷 119-140页

作者： Kandil M. Kandil talal h. alzanki Ibrah.m M. Kadad Applied Sciences Department College of Technological Studies Public Authority for Applied Education and Training (PAAET) Shuwaikh Kuwait Electronic Engineering Department College of Technological Studies Public Authority for Applied Education and Training (PAAET) Shuwaikh Kuwait

Th.s work investigates th. performance of combined h.brid h.gh.concentrated ph.tovoltaic/th.rmal collector (h.PV/T) in Kuwait h.rsh.climate. Th. proposed system consists of triple junction solar cells (InGaP/InGaAs/Ge) attach.d to h.at source to disch.rge th.rmal energy to cooling media. Publish.d h.PV/T models do not consider th. effect of sh.nt resistance wh.ch.greatly affects th. system performance. So, a single diode model employing five parameters including th. effect of sh.nt resistance is adapted to analyze th. proposed system. To analyze th. th.rmal performance of th. proposed system, a two-dimensional th.rmal model based on th. tech.ique of finite difference is introduced to determine th. efficiency of th. h.brid h.PV/T system. Th. present developed subroutines are integrated with.oth.r involved codes in TRNSYS software to calculate h.PV/T system efficiency. Electrical and th.rmal as well as th. wh.le system efficiency at different weath.r circumstances are evaluated and assessed. Th. effect of different weath.r conditions, cell temperature, concentration ratio and th. temperatures of th. coolant fluid on system performance are studied. Current results indicate th.t th. model of single diode is a reliable one rath.r th.n using th. two-diode complex model. Compared to measurements provided by h.gh.concentrated PV manufacturer, th. current results revealed a total root mean square error of approximately 1.94%. Present predictions sh.w th.t PV cell temperature h.s logarith.ic increase with.th. rise in concentration ratio but with.low values till concentration ratio of 400 suns after th.t th. rise is faster at h.gh.r concentration values up to 1500 suns. Results also revealed th.t h.brid h.PV/T system works effectively specially in severe h.t climate wh.re th.rmal efficiency increases with.h.gh.surrounding temperature for h.gh.r values of concentration ratio. In addition, an increase of approximately 15% in th.rmal efficiency and 10% in total efficiency can be

关键词： Multijunction PV Cells h.gh Concentrated Solar Cells Th.rmal Collector Electrical Efficiency Th.rmal Efficiency

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On th. h.gh.Order Quasi Exactly Solvable Differential Equations

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American Journal of Computational Math.matics 2019年第4期9卷 234-250页

作者： talal h. alzanki Moh.med S. Sh.aban Moh.mad K. El-Daou Department of Electronic Engineering College of Technological Studies PAAET Kuwait City Kuwait Department of Applied Sciences College of Technological Studies PAAET Kuwait City Kuwait

In th.s paper, we present a new meth.d for solving a class of h.gh.order quasi exactly solvable ordinary differential equations. With.th.s meth.d, th. computed solution is expressed as a linear combination of th. canonical polynomials associated with.th. given differential operator. An iterative algorith. summarizing th. procedure is presented and its efficiency is demonstrated th.ough.considering two applied problems.

关键词： Quasi-Exactly Solvable h.gh.Order Differential Equations Canonical Polynomials Tau Meth.d

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Quasi-Exactly Solvable Differential Models: A Canonical Polynomials Approach

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American Journal of Computational Math.matics 2019年第2期9卷 48-60页

作者： Moh.mad K. El-Daou talal h. alzanki Nadia S. Al-Mutawa Department of Applied Sciences The College of Technological Studies PAAET Kuwait Department of Electronic Engineering Tech.ology The College of Technological Studies PAAET Kuwait

A quasi-exactly solvable model refers to any second order differential equation with.polynomial coefficients of th. form A(x)y’’(x)+B(x)y’(x)+C(x)y(x)=0 wh.re a pair of exact polynomials {y(x), C(x)} with.respective degrees {deg[y]=n, deg[C]=p} are to be found simultaneously in terms of th. coefficients of two given polynomials {A(x), B(x)}. Th. existing meth.ds for solving quasi-exactly solvable models require th. solution of a system of nonlinear algebraic equations of wh.ch.th. dimensions depend on n, th. degree of th. exact polynomial solution y(x). In th.s paper, a new meth.d employing a set of polynomials, called canonical polynomials, is proposed. Th.s meth.d requires solving a system of nonlinear algebraic equations of wh.ch.th. dimensions depend only on p, th. degree of C(x), and do not vary with.n. Several examples are implemented to testify th. efficiency of th. proposed meth.d.

关键词： Polynomial Solutions Canonical Polynomials Tau Meth.d Quasi-Exactly Solvable Models

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Environmental Impacts of Grid Connected h.gh.Concentrated Ph.tovoltaic Systems Adapted for Peak Load Minimization in h.t Climate

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Smart Grid and Renewable Energy 2018年第11期9卷 237-258页

作者： talal h. alzanki Kandil M. Kandil Moh.mmad R. Alenezi Adel A. Gh.neim Public Auth.rity for Applied Education and Training (PAAET) Electronic Engineering Department College of Technological Studies Shuwaikh Kuwait Public Auth.rity for Applied Education and Training (PAAET) Applied Sciences Department College of Technological Studies Shuwaikh Kuwait

h.gh.concentrated PV multi-junction solar cells (h.PV) likely present a favorable alternative to ach.eve low cost of energy. h.wever, multi-junction solar cell h.s different ch.racteristics wh.ch.sh.uld be settled before th.y can be adapted for large scale energy generation. Peak energy consumption in Kuwait usually occurs in periods of utilizing air conditioning systems wh.ch.are essentially used in almost all year around in h.rsh.climate like Kuwait. Power consumed at peak times is more costly th.n power needed to satisfy loads at regular consumption times. Th. main goal of th. present research.is to increase h.PV solar cells’ efficiency, to decrease maximum power cost in Kuwait. Multi-junction solar cells performance in weath.r conditions of Kuwait is investigated employing a single diode equivalent circuit model. Th. model developed considers th. impacts of concentration ratio as well as temperature. Most research.in literature review usually neglects sh.nt resistance of th. diode, h.wever th.s resistance is taken into consideration in current developed th.oretical model. To calibrate th. present model, current predictions are compared with.corresponding measured data provided by multi-junction solar cell manufacturer. Th. total root mean square errors in th. present model predictions are about 1.8%. Th.s means th.t current developed model of single diode model wh.ch.takes into account sh.nt resistance impacts gives precise and reliable data. h.P electrical efficiency is noticed to rise as concentration increases but to a certain concentration value, th.n it begins to decrease. In addition, utilizing h.PV linked to grid satisfies great decrease in maximum load. Power produced from h.PV modules is utilized to provide energy needs to a family in normal Kuwaiti family h.me to evaluate h.PV environmental effects. h.PV modules slopes and areas are ch.nged to accomplish.peak energy production all over th. year. Present results reveal th.t optimum power production corr

关键词： h.gh Concentrated Ph.tovoltaic Systems Avoided CO2 Emission Maximum Load

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MPDP: A Probabilistic Arch.tecture for Microservice Performance Diagnosis and Prediction

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Computer Systems Science & Engineering 2024年第5期48卷 1273-1299页

作者： talal h.Noor Department of Computer Science College of Computer Science and EngineeringTaibah UniversityMadinah42353Saudi Arabia

In recent years,container-based cloud virtualization solutions h.ve emerged to mitigate th. performance gap between non-virtualized and virtualized ph.sical ***,th.re is a noticeable absence of tech.iques for predicting microservice performance in current research.wh.ch.impacts cloud service users’ability to determine wh.n to provision or de-provision *** microservice performance poses ch.llenges due to overh.ads associated with.actions such.as variations in processing time caused by resource contention,wh.ch.potentially leads to user *** th.s paper,we propose,develop,and validate a probabilistic arch.tecture named Microservice Performance Diagnosis and Prediction(MPDP).MPDP considers various factors such.as response time,th.ough.ut,CPU usage,and oth.rmetrics to dynamicallymodel interactions betweenmicroservice performance indicators for diagnosis and *** experimental data fromourmonitoring tool,stakeh.lders can build various networks for probabilistic analysis ofmicroservice performance diagnosis and prediction and estimate th. best microservice resource combination for a given Quality of Service(QoS)*** generated a dataset of microservices with.2726 records across four bench.arks including CPU,memory,response time,and th.ough.ut to demonstrate th. efficacy of th. proposed MPDP *** validate MPDP and demonstrate its capability to predict microservice *** compared various Bayesian networks such.as th. Noisy-OR Network(NOR),Naive Bayes Network(NBN),and Complex Bayesian Network(CBN),ach.eving an overall accuracy rate of 89.98%wh.n using CBN.

关键词： Cloud computing microservices monitoring performance QoS diagnosis prediction Bayesian network

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Parameter Prediction of Stretch.Blow Molding Process of PET Using Neural Networks

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Journal of Software Engineering and Applications（软件工程与应用） 2019年第7期

作者： talal h. alzanki Mutaz M. Jafar

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Impact of UVB Solar Radiation on Ambient Temperature for Kuwait Desert Climate

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Smart Grid and Renewable Energy（智能电网与可再生能源） 2020年第8期

作者： Ibrah.m M. Kadad Kandil M. Kandil talal h. alzanki

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