Aimen Zeiny- PhD
- Professor at University of Kufa
Aimen Zeiny
- PhD
- Professor at University of Kufa
About
20
Publications
91,585
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692
Citations
Introduction
PhD from
University of Leeds,
School of Chemical and Process Engineering (SCaPE),
Institute of Particle Science and Engineering (IPSE)
Current institution
Additional affiliations
August 2021 - present
October 2018 - March 2020
July 2012 - October 2018
Education
April 2014 - November 2018
September 1998 - July 2001
Publications
Publications (20)
A comprehensive 3D computational fluid dynamics (CFD) model is developed to explore the thermal performance of a PEM fuel cell liquid-base cooling system. In previous studies, the models were developed to simulate a single cooling plate. While in this study, the model consists of a bipolar plate with gas diffusion and catalyst layers. The heat gene...
Polymer electrolyte membrane (PEM) fuel cells are promising eco-friendly and sustainable power generation technology. Thermal management of these cells is one of the main challenges facing their commercialization. Alumina nanofluids, in addition to others, have been proposed to overcome excess heat generated within the PEM fuel cell stacks. However...
Hydrogen polymer electrolyte membrane (PEM) fuel cells are renewable and future
sustainable power generation systems that operate with zero emissions. Thermal management
in fuel cells is still an important issue that must be addressed to extend their life and the
possibility of their widespread commercial use. In this research, a simulation mode...
Effective thermal management is a key for the continuous development of electronics, which are characteristics of modern life. It has a great effect on the lifetime, durability and reliability of these systems. A liquid-cooled microchannel heat sink is a compacted cooling part that used to provide better heat dissipation rates and low temperatures...
Solar-driven absorption refrigeration technology has the potential to reduce the peak electricity demand and global warming. Optimization of this technology can change the future energy economy of the world. Herein, the straightforward and inexpensive preparation of new stable aqueous solution for direct solar absorption refrigeration systems is re...
Solar-driven absorption refrigeration technology has the potential to reduce the peak electricity demand and the greenhouse gas emission. The optimisation of the generator and the absorber performance is crucial to develop this technology. Recently, seeding refrigeration working fluids with nanoparticles has attracted intense interest of research g...
Water vaporization through direct volumetric solar collectors has recently attracted a significant attention of the scientific research community. Many studies suggested plasmonic nanoparticles, such as gold nanoparticles, to produce solar clean water effectively. However, there is a lack of studies comparing the feasibility of using gold nanoparti...
Renewable energy is one of the hottest topics now because of its great impact on environment, economy and life style. Finding new approaches and methods is the aim of the conference. AETREE-1 is the first conference on renewable energy and environment hosted by Imam Al-Kadhum College (IKC), Najaf, Iraq in association with the IEEF foundation. It is...
Steam generation of nanofluid under solar radiation has attracted intensive attention from researchers. Due to strong absorption of solar energy, nanoparticle-based solar vapor generation is promising in desalination, sterilization and producing steam for electricity generation. Steam generation for different concentrations of gold nanoparticle dis...
Nanoparticle-based volumetric solar absorption has been shown to be a potential technique to realize
efficient solar harvesting. However, most of studied systems are stationary and cannot achieve long distance
solar energy transport, which limits their applications. A novel idea of using directive absorptive
nanofluids in oscillating heat pipes (OH...
Vaporisation (evaporation and boiling) through direct absorption solar collectors (DASCs) has recently drawn significant attention. Many studies suggested that plasmonic nanoparticles, such as gold nanoparticles, can significantly enhance the photo-thermal conversion efficiency of DASCs. However, there is still a lack of comparative studies of the...
Direct absorption nanofluid has been introduced as an effective alternative to increase solar thermal conversion efficiency. Hybrid nanofluids were also recently proposed to broaden the absorption spectrum. However, a comparative assessment of the performance of commonly used nanomaterials for solar energy harness is still lacking. In this study, a...
Steam production is essential for a wide range of applications, and currently there is still strong debate if steam could be generated on top of heated nanoparticles in a solar receiver. We performed steam generation experiments for different concentrations of gold nanoparticles dispersions in a cylindrical receiver under focused natural sunlight o...
Considering pollution problems today, investigations have been concentrated on lowering the concentration of toxic components in combustion products. The purpose of this project is to experimentally study of using Naphtha which is produced in Annajaf city refinery as an alternative fuel instead of the commercial gasoline which is imported to Iraq f...
Considering pollution problems and energy crisis today, investigations have been concentrated on lowering the concentration of toxic components in combustion products and decreasing fuel consumption by using renewable alternative fuels. In the present work, the effect of ethanol addition to gasoline on the exhaust emissions and noise level has been...
Questions
Questions (20)
How can the ions of the dissolved salt in water affect the thermal capacity and conductivity? What is the mechanism behind that?
Many thanks in advance.
What is the mechanism behind the absorption process? What are the driving forces that control the process? Simply, what does the lithium bromide do to change the evaporation of water to absorption of water vapour, from mass reduction to mass gain?
It is well known that the peak absorption of gold nanofluids is at ~520nm wavelength (depends on the nanoparticle's size). Can another nanofluid (or other liquid, ionic liquid or a solution) have the same absorption trend and a peak of absorption approximately at the same wavelength (~520 nm)?
A sample of liquid is in a beaker open to air. This sample is subjected to light. The light energy is absorbed by that liquid converting it into thermal energy. Therefore, the liquid's temperature increases and evaporation is enhanced. Consequently, the liquid's level in the beaker reduces. I want to measure the evaporation rate as a function of the surface temperature of the liquid (it's well known that one of the dominant factor that affecting the evaporation is the surface temperature of a liquid in addition to the air movement above the liquid surface).
I would be grateful if you suggest me the best way to measure the temperature of the liquid surface.
A sample of liquid is in a beaker open to air. Assuming that the temperature distribution of the liquid surface (the interface between air and liquid) is non-uniform, how does the liquid depth affect the Marangoni effect?
Many thanks to you in advance.
I prepared copper nanofluid by dispersing copper nanopowder (60-80nm purchased from Sigma Aldrich) in DI water using gum-arabic and sodium citrate. First preparation, the color of the nanofluid was bluish. After that, I needed more nanofluid, so I prepared another sample (using the same materials and following the same procedure) but the color was greenish!
When I did a literature review and asked some chemists, I found that the color must be reddish!
I would be grateful if you help me to overcome this confusion.
