Hossein KhorasanizadehUniversity of Kashan · Department of Thermal Sciences and Fluid Mechanics
Hossein Khorasanizadeh
PhD
Research and academic duties
About
81
Publications
24,278
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Introduction
Hossein Khorasanizadeh is currently working as a full professor at the Department of Thermal Sciences and Fluid Mechanics, University of Kashan, Iran. Hossein does research on different Mechanical Engineering subjects such as heat transfer, heat transfer properties of nano-fluids, solar energy, thermodynamics and entropy generation minimization analysis. One of his current project is 'Compressible flow of natural gas from an unwanted crack.'
Additional affiliations
August 1997 - present
March 1994 - March 1997
March 1994 - August 1997
Education
August 1993 - May 1997
February 1992 - July 1993
January 1983 - December 1987
Publications
Publications (81)
In poultry houses, the ventilation system should provide a favorable standard living environment for hens. In addition to uniform distribution of velocity and temperature, concentration of gaseous CO2 and NH3 pollutants and the humidity distribution, which affect the air quality in the poultry house, are of prime importance. In previous numerical s...
This study aims to improve polyurethane-based coating by modified zirconium oxide and aluminum oxide nanoparticles for preparing thin polymeric heat insulation coatings. In the first step, the nanoparticles were chemically modified with the silane coupling agent. Then, three different weight percent of modified nanoparticles (1, 3, and 5% w/w) were...
The use of hybrid nanofluids in parabolic trough solar collectors (PTCs) is a promising way to improve their performance. There have been some studies on utilization of hybrid nanofluids in PTCs, however there has been no study on utilization of Al2O3/SiO2-Syltherm 800 hybrid nanofluid. In the present study, after showing the superiority of utiliza...
Purpose
This paper aims to study the thermal and thermo-hydraulic performances of ferro-nanofluid flow in a three-dimensional trapezoidal microchannel heat sink (TMCHS) under uniform heat flux and magnetic fields.
Design/methodology/approach
To investigate the effect of direction of Lorentz force the magnetic field has been applied: transversely i...
In this study two new simple methods are extended for thermal performance evaluation of minichannel collectors. The classical fin analysis method is employed for minichannel collectors with small size and small distanced minichannels and the concept of overall heat loss coefficient is utilized for minichannel collectors with any minichannel size an...
The present work attempts to show the accuracy of lattice Boltzmann method (LBM) to study a liquid flow with volumetric forces of electroosmotic and pressure gradient over hydrophobic surfaces. Navier boundary condition, slip velocity and temperature jump are taken into account. The flow has temperature-dependent physical properties and is assumed...
High concentration photovoltaic (HCPV) technologies offer several advantages over typical PV systems. In this study, a detailed economic assessment and sensitivity analysis of deploying HCPV plants in the US southwest is performed. To do this, a 20 MWdc HCPV power plant is designed using the System Advisor Model (SAM) and is evaluated from both tec...
Iran with 300 sunny days in more than two thirds of its land is among the countries with high potential of solar energy. Nevertheless, to date no research has been conducted on status of solar exergy in Iran. In this study, in order to expand the perception of solar energy quality and to compensate the lack of research on solar radiation exergy in...
In the present study, a combination of the modified sine and cosine algorithm (MSCA) and teaching–learning-based optimization (TLBO) algorithm is integrated with the neuro-fuzzy system to obtain three hybrid models. The proposed model predicts the effects of design parameters including the bottom galvanized protective edge of the cooking plate, top...
Depending on the application and demands, different products can be generated utilizing multigeneration systems. To drive such systems, solar energy can be used as a primary energy source or in hybridization with other renewable or nonrenewable energy sources. Solar driven multigeneration systems are appealing due to the broad availability of solar...
The Editor-in-Chief has retracted this article [1] because validity of the content of this article cannot be verified. This article showed evidence of substantial text overlap (most notably with the articles cited [2, 3]) and authorship manipulation.
In this three dimensional numerical study, the effects of uniform magnetic field on thermal and thermo-hydraulic performance and entropy generation of water flow through a trapezoidal heat sink, with four different inlet/outlet configurations, have been investigated. An electronic chip embedded on the base plate of the heat sink generates uniform h...
The present study deals with exergy and exergo-economic evaluation of a 1 MW combined cooling, heat and power (CCHP) system, composed of a natural gas prime mover internal combustion engine located in the main campus of the University of Kashan, Kashan, Iran. Using appropriate linking between engineering equation solver (EES) and MATLAB software, t...
The present study deals with exergy and exergo-economic evaluation of a 1 MW combined cooling, heat and power (CCHP) system, composed of a natural gas prime mover internal combustion engine located in the main campus of the University of Kashan, Kashan, Iran. Using appropriate linking between engineering equation solver (EES) and MATLAB software, t...
The purpose of this research is the numerical study of turbulent flow field, heat transfer and entropy generation of a Cuo-MWCNT-oil hybrid nanofluid in a trapezoidal enclosure under the influence of a magnetic field in natural convection. The enclosure side walls are insulated, the top wall is cold and the bottom one is hot. The study is done on R...
Iran's experience for deployment of concentrated solar power (CSP) goes back to Shiraz and Yazd power plants which became operational in 2008 and 2009, respectively. Despite the successful operation of these plants, design or construction of new CSP plants have not been announced since then. In this regard, a lack of thorough feasibility studies is...
In this three dimensional numerical study, heat transfer characteristics and entropy generation of Alumina water nanofluid laminar flow in a trapezoidal micro channel heat sink have been investigated by considering conduction in solid parts for constant heat flux of 200 kW/m2 entering from the substrate. The governing equations have been solved usi...
In this study three dimensional fluid flow and heat transfer of Al 2 O 3-water nanofluid in a triangular microchannel heat sink, consisting from seven isosceles triangular microchannels, have been investigated numerically by considering conduction in solid parts. The governing equations have been solved using finite volume method based on finite el...
The Editors-in-Chief of Environmental Earth Sciences are issuing an editorial expression of concern to alert readers that this article (Mohammadi et al. 2016) shows substantial indication of irregularities in authorship during the submission process. The authors suggested peer reviewers whose identity was not possible to verify. This article contai...
Nowadays, microchannels as closed circuits channels for fluid flow and heat removal are an integral part of the silicon-based electronic microsystems. Most of previous numerical studies on microchannel heat sinks (MCHS) have been performed for a two-dimensional domain using constant properties of the working fluid. In this study, laminar fluid flow...
The main objectives of this study have been measurement of the dynamic viscosity of CuO–MWCNTs/SAE 5w–50 hybrid nanofluid, utilization of artificial neural networks (ANN) and development of a new viscosity model. The new nanofluid has been prepared by a two-stage procedure with volume fractions of 0.05, 0.1, 0.25, 0.5, 0.75 and 1%. Then, utilizing...
Most of numerical studies on microchannel heat sinks (MCHS) performed up to now are for a twodimensional domain using constant properties of the coolant and solid part. In this study, laminar fluid flow and heat transfer of variable properties water in a trapezoidal MCHS, consisted of five trapezoidal microchannels, are studied. The three dimension...
In this research, a numerical approach and a series of laboratory tests have been used to investigate the effect of vertical baffling and height to diameter ratio on the axial mixing in flotation columns. The baffle is a plate located perpendicular to the cross section of the column with a length of 2.8 m and thickness of 0.4 cm. The computational...
The present research studies on the effect of nanoparticles on polymeric coatings and heat transfer in them. For this purpose, three different weight percentage of nanozirconium oxide (1, 3 and 5%) were added to polyurethane resin and applied on metallic plates. To determine the radiation heat transfer coefficients, emissivity coefficient and therm...
In this experimental study, heat transfer of a coolant nanofluid, obtained by adding alumina nanoparticles to Ethylene Glycol-water (60:40 by mass), in a car radiator has been investigated. For this purpose, an experimental setup has been designed and constructed. Firstly, to investigate the accuracy of the results, the experiments have been done f...
Most of numerical studies on microchannel heat sinks (MCHS) performed up to now are for a twodimensional domain using constant properties of the coolant and solid part. In this study, laminar fluid flow and heat transfer of variable properties water in a trapezoidal MCHS, consisted of five trapezoidal microchannels, are studied. The three dimension...
In this study, the effects of using corrugated absorber plate on heat transfer and turbulent flow in solar air-heater collectors were numerically investigated. The two-dimensional governing equations were solved by utilizing finite volume method and SIMPLE algorithm. The absorber plate with triangle, rectangle and sinuous corrugations in turbulent...
Diffuse solar radiation is an important factor for design and simulation processes of the photovoltaic (PV) panels as well as other solar systems. Nowadays, hydrogen generation can be accomplished by harnessing solar energy via PV systems to electrolyze the water in a clean and environmentally friendly manner. In this study, 13 existing functional...
Effects of different inlet/outlet arrangements on thermal performance of porous microchannel heat sink MCHS of any geometry has not been studied yet. In this investigation, the effects of utilization of four different inlet/outlet arrangements on electronic chip cooling utilizing trapezoidal MCHS with porous microchannels with porosity of 0.88 have...
This study aims to recognize that whether introducing various meteorological parameters to the Angström–Prescott (A–P) model eventuates in enhancing the precision of monthly mean global solar radiation estimation in cities of Bandar Abbas and Jask, situated in the south coast of Iran. To identify the significance of the average, maximum and minimum...
In this study the effects of using corrugated absorber plate on heat transfer and turbulent flow in solar air-heater collectors have been numerically investigated. The two-dimensional governing equations have been solved by utilizing finite volume method and SIMPLE algorithm. The absorber plate with triangle, rectangle and sinuous corrugations in t...
Three dimensional investigations of inlet/outlet arrangements and nanofluid utilization effects on a triangular microchannel heat sink performance,
The availability of accurate solar radiation data is essential for designing as well as simulating the solar energy systems. In this study, by employing the long term daily measured solar data, a neural network auto-regressive model with exogenous inputs (NN-ARX) is applied to predict daily horizontal global solar radiation using day of the year as...
The orientation of the flat solar collectors affects the amount of solar radiation received and absorbed by them. In this study, the optimum tilt angles of flat plat solar collectors in Kashan for the fixed monthly, seasonal, semi-yearly and yearly adjustments have been determined. If the solar calculations are based on the measured data, they prod...
The flow under influence of magnetic field is experienced in cooling electronic devices and voltage
transformers, nuclear reactors, biochemistry and in physical phenomenon like geology. In this
study, the effects of magnetic field on the flow field, heat transfer and entropy generation of Cuwater
nanofluid mixed convection in a trapezoidal enclosur...
In this paper the effects of inclination angle and the direction of movement of moving walls of an enclosure on mixed convection have been investigated for two different cases. In the first case natural and forced convection effects are in agreement, whereas in the second case they are opposed. Simulations have been performed for temperature depend...
In this study, utilizing the obtained data from four distributed locations known as Abarkuh, Behabad, Halvan and Yazd, the solar energy potential and its characteristics in Yazd province of Iran have been evaluated. For the data, daily horizontal global radiation (HGR) and clearness index also their monthly, seasonal and yearly averaged values have...
![Table 2 Nu avg for Ra = 10 5 ; comparison with [8] for validating the...](profile/Mohammad-Mahdi-Fakhari/publication/276099453/figure/tbl1/AS:391898196922372@1470447219745/Nu-avg-for-Ra-10-5-comparison-with-8-for-validating-the-numerical-results_Q320.jpg)
Heat transfer enhancement or deterioration of variable properties Al2O3-EG-water nanofluid natural convection in a differentially heated rectangular cavity has been investigated numerically. A finite volume approach has been utilized to solve the governing equations for a Newtonian fluid. The influences of the pertinent parameters such as Rayleigh...
In this study, the exergetic performance of a baffled type solar air heater has been evaluated theoretically.
A detailed parametric study was done to investigate the effect of variation of fin and baffle parameters,
number of glass covers, bottom insulation thickness and inlet air temperature at different mass flow rates
on the exergy efficiency. T...
The full text is available at: http://www.ijee.net/Journal/ijee/vol5/no3/1.pdf
Abstract:
The efficiency of the flat solar surfaces, such as thermal collectors and photovoltaic (PV) panels,
depends on the received beam and diffuse radiation components and the angle of the beam incidence. In this study, based on the long term measured data tilt angle...
Researches have shown that axial mixing in the flotation column leads to lower recovery of minerals. In the present work, the effects of height to diameter ratio and baffling on the axial mixing in flotation columns were investigated using two-phase computational fluid dynamics method. The computational domain is a column with a circular shape cros...
The effect of wall temperature variations on double diffusive natural convection of Al2O3–water nanofluid in a differentially heated square enclosure with constant temperature hot and cold vertical walls is studied numerically. Transport mechanisms of nanoparticles including Brownian diffusion and thermophoresis that cause heterogeneity are conside...
In this paper, mixed convection of Al2O3-EG-Water nanofluid in a square lid-driven enclosure is investigated numerically. The focus of this study is on the effects of variable thermophysical properties of the nanofluid on the heat transfer characteristics. The top moving and the bottom stationary horizontal walls are insulated, while the vertical w...
In this study, exergy analysis of a flat plat solar collector in a closed circuit has been performed using existing experimental data and the effects of utilization of the collector with upper, lower and side reflectors alone and together with lenses on exergy efficiency have been considered. Then, based on a mathematical model, optimization analys...
In this study design, constr status in Kashan. In design step and in concentrating the solar flux on the back the diameter of the reflective surface considered 48 cm and 6 mm, respectiv capable of being adjusted around a nort For evaluating the performance, tests an indicated the validity of calculations an the solar cooker it is possible to cook 1...
This paper presents results of a numerical study of mixed convection and entropy generation of Cu–water nanofluid in a square ventilating cavity at different inclination angles. Except a piece of bottom wall with a uniform heat flux, all of the cavity walls are insulated. The inlet port is placed at the bottom of the left wall and the outlet port i...
This article presents a numerical study of natural convection and entropy generation of Cu-water nanofluid within an enclosure with a conductive baffle embedded on bottom hot wall. The governing equations are solved numerically with Finite Volume Method using the SIMPLER algorithm. Effects of Rayleigh number, position of conductive baffle and volum...
An advance cooling method for buildings is use of radiant cooling system, which is not only economically feasible but also enhances thermal comfort for occupants. In this numerical study the flow and temperature fields and heat transfer in a room equipped with radiant cooling panel, either on the ceiling or on the wall, are studied. Outside summer...
Considering problems associated with nonrenewable fuels such as pollution and high cost, efforts are being made to develop use of renewable energy sources like solar energy. Solar collectors could often be employed as important devices for thermal applications. Unglazed Transpired Collector (UTC) is a modern preheating and heating equipment used fo...
یکی از موضوعات مورد توجه امروزین، مصرف بهینه انرژی میباشد. در سالهاي اخير استفاده از سيستم گرمايش از كف در كشورهاي اروپائي و آمريكا بسيار متداول شده است. در این تحقیق علاوه بر مروری بر ویژگیهای سیستم گرمایش کفی و شرایط و طراحی آن، به منظور درک بهتری از میزان کاهش مصرف سوخت در یک ساختمان نمونه مجهز به سیستم گرمایش از کف با استفاده از محاسبات ساده...
In this work, entropy generation, thermal behavior and flow pattern for mixed convection in a lid-driven square cavity filled with Cu-Water nanofluid is studied numerically. Horizontal walls of the cavity are adiabatic and vertical walls are maintained at constant temperature but different values. It is assumed that the top wall is moving from left...
Solar photovoltaic and thermal systems are potential solutions for current energy needs. One of the most important difficulties in using photovoltaic systems is the low energy conversion efficiency of PV cells and, furthermore, this efficiency decreases further during the operational period by increasing the cells temperature above a certain limit....
Thermal stratification of hot water tanks in solar water heaters has a significant positive effect on the efficiency of the system. However, maintaining thermal stratification is difficult due to mixing induced by the incoming water stream. This study is concerned with factors that affect stratification in vertical hot water tanks, such as initial...
Questions
Question (1)
This happens at the time of accident.
Projects
Projects (4)
• In this experimental study, heat transfer and pressure drop of a coolant nanofluid in a car radiator have been investigated.
• The thermophysical properties have been calculated using the recently presented temperature dependent models.
• The heat transfer and increase with increasing the coolant flow and nanoparticles volume fraction.
• The performance evaluation using nanofluid in the car radiator shows remarkable enhancement in radiator thermal efficiency.
• By using the nanofluid in the car radiator, the ratio of heat transfer rate to needed pumping power (Merit parameter) is decreased.
