بكاليوريوس هندسة ميكانيكية

Sep 3, 1995 - Jun 1, 1999

ماجستير هندسة ميكانيكية

Dec 15, 2019 - Feb 22, 2022

Ast [مقرر قسم تقنيات شبكات وبرمجيات الحاسوب]

May 25, 2024 - Present

Design, Development and Performance investigation of a double-pass hybrid solar heater using porous media

Sep 13, 2021

Journal Advances in Mechanics

publisher li xue jin zhan bian ji bu

Issue No.3

Volume vol 9

porous media on the performance of the PV/T was investigated by building two experimental units. As well as the utilization of air and water as working materials. The study found that using porous media widens the field of heat transfer and storage throughout the effective time of solar radiation, increasing the hybrid solar collector's thermal and electrical efficiency as well as the air exit temperature. The study found that porous medium can store heat since the difference in temperature between the two models was three hours and 2.8 C. Using air and water in conjunction with porous medium improves thermal and electrical efficiency. When compared to the model without porous media (glass spheres), the total efficiency improved by 11.36%, and it was determined that the hybrid solar collector with porous media and air and water usage is more thermally efficient than the other design model. The utilization of a porous media, as well as air and water, resulted in improved electrical efficiency. The porous material retains heat during periods of high solar radiation, lowering the temperature of the solar panels, resulting in a 2.2% gain in electrical efficiency. as well as making better use of the piping network behind the solar panels Effective cooling of the plate, resulting in increased electrical efficiency. With porous media and without medium, thermal efficiency was (61.33%) and (50.82%), respectively. The overall thermal efficiency rate of the two models increased by 10.51% in favor of the model with porous medium, which contributed to the regulation. PV temperature

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Effect of Nanomaterials Addition to Phase Change Materials on Heat Transfer in Solar Panels under Iraqi Atmospheric Conditions

Jul 11, 2023

Journal Frontiers in Heat and Mass Transfer

publisher Tech science press

DOI DOI: 10.32604/fhmt.2023.041668

Issue No.1, 2023

Volume Vol.21,

Itiscommonknowledgethatphase-changematerialsareusedforthepurposeofthermalstoragebecauseof the characteristics that are exclusive to these materials and not found in others. These characteristics include a large capacity for absorbing heat and a large capacityforreleasingheatwhenthephasechanges;however, thesematerialshavealowthermalconductivity.Thispaperpresentstheresultsofanexperimentalstudythat investigatedtheimpactthatnanoparticlesofcopperoxidehadonreducingthetemperatureofsolarpanels.The phase change substance that was used was determined to be beeswax. The impact of adding nanoscale copper oxide at a concentration of 0.05% of the total mass of wax was investigated and compared to a reference solar panel that did not contain any nanoscale additions. The findings demonstrated that the incorporation of nanoscale copper oxide brought about a reduction of three °C in the plate’s average temperature as well as a one percent improvement in its electrical efficiency. In cases where it seems that the use of nanoparticles might potentially enhance the performance of integrated solar energy systems that contain phase change.

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Comparative study of different phase change materials on the thermal performance of photovoltaic cells in Iraq’s climate conditions

Jun 1, 2024

Journal Energy Reports

publisher Tech science press

DOI https://doi.org/10.1016/j.egyr.2023.11.022

Issue No.1, 2024

Volume Volume 11

The incident solar energy that impinges upon the photovoltaic cells undergoes a conversion process, resulting in the generation of electrical energy and conversion of absorbed energy into heat. This increase in temperature adversely affects the performance of the panel, leading to a decrease in its overall efficiency. This study examines the properties and performance of phase change materials, specifically paraffin wax, natural beeswax, and a combination of paraffin wax and beeswax, in comparison to a solar panel lacking any phase change substance. The experiment was conducted in the climatic conditions of Iraq, namely in the city of Hawija, located southwest of Kirkuk, during the summer of 2022. The prevailing environmental temperature throughout this period averaged 44 ◦C. The experiment involved comparing plate temperature, electrical power, and electrical effi-ciency. The results indicated that all the materials caused a decrease in the temperature of the board at the beginning of the experiment and for a short duration. Nevertheless, as the phase change material (PCM) un-dergoes melting, the dissipation of heat becomes unfeasible, resulting in a gradual increase in temperature. It was observed that there was a rise in temperature during the afternoon hours. According to the recorded data, the use of beeswax resulted in a decrease in temperature by 4 ◦C in comparison to the reference plate that did not incorporate phase change materials (PCM). Additionally, the efficiency of the photovoltaic (PV) system increased by 1% when compared to the PV Compared with PV (reference). The efficiency of the solar panel with beeswax ranged from 13% to 14%. According to the findings, the integration of phase-change materials with solar panels has been observed to effectively lower the temperature of the panels, hence enhancing their overall efficiency. Consequently, this approach represents a viable and advantageous choice.

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A comprehensive review on the thermal management of solar panels

Jun 30, 2024

Journal ENERGY SOURCES, PART A: RECOVERY, UTILIZATION, AND ENVIRONMENTAL EFFECTS

publisher Taylor andFrancis

DOI https://doi.org/10.1080/15567036.2024.2368506

Issue No.1

Volume VOL. 46

There is now a pressing requirement to utilize sustainable energy sources, specifically solar energy, and employ photovoltaic modules for large-scale power generation. This is due to their convenient installation process and environmentally friendly nature. However, it is important to acknowledge that these systems also possess certain limitations. One of the disadvantages of these systems is that the conversion efficiency does not exceed 25% of the value of the incoming radiation. They are also exposed to direct sunlight during installation, which leads to the remaining radiation being absorbed within the panel structure and converted into thermal energy. As a result, the plate temperature rises above the standard temperature, resulting in reduced efficiency. The use of temperature control techniques is essential to ensure proper operation and efficiency, particularly in hot regions. Numerous specialists have undertaken comprehensive research on diverse approaches to improve the effectiveness of solar energy generation systems. This piece presents a comprehensive review of the various cooling technol-ogies that may be used for solar energy systems (PV). The use of water and air cooling, phase-change, and other methods are some of the various passive and active tactics that are included into the cooling system. Subcategories are complicated subcategories that exist inside each category. In addition, the topics that are discussed include heat sinks, convection, and air collec-tors, as well as the incorporation of PCM, heat pipes, and several other cutting-edge technologies. Each of these methodologies is exemplified with precise graphics and extensively examined and contrasted. Moreover, this work introduces a novel categorization approach for cooling techniques employed in photovoltaic (PV) panels, offering essential direction for future investigations and knowledge for enhancing efficiency.

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