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Mehrangiz Ghazi
Islamic Azad University
ExergyPhysicsProcess engineeringConstructal lawExergy efficiency
7Publications
2H-index
63Citations
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Publications 7
Newest
#2Tarannom Parhizkar (NTNU: Norwegian University of Science and Technology)
Last. Majid AmidpourH-Index: 31
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Abstract The Organic Rankine Cycle (ORC) is a power generation cycle similar to the conventional Rankine cycle which runs on a working fluid other than water. The selection of a working fluid is a critical part of designing an ORC system. Researchers have selected working fluids based on various performance criteria including thermal efficiency, safety, output power, and investment cost. It should be noted that working fluids are degraded over system operating lifetime, and this will affect the ...
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#1S. Mehran (IAU: Islamic Azad University)H-Index: 4
#2Mohammad Nikian (IAU: Islamic Azad University)H-Index: 2
Last. I. Bagheri (University of Gilan)H-Index: 6
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Abstract During drying process of paddy grains, as one of the major operations of rice milling process, a considerable amount of fossil fuel is consumed. The air pollutants emitted by combustion of fossil fuels are great threat to human health which strongly contribute to environmental problems. In the present study, to reduce the share of fossil fuels in drying process of paddy grains, a new type solar-assisted fluidized-bed dryer was used with the ability of thermal energy recovery. The drying...
2 CitationsSource
#1Alireza Pirmohamadi (UMA: University of Mohaghegh Ardabili)H-Index: 1
#2Mehrangiz Ghazi (IAU: Islamic Azad University)H-Index: 2
Last. Mohammad Nikian (IAU: Islamic Azad University)H-Index: 2
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Abstract By increasingly demands on the hot and cold utilities in chemical processing industries, application of unified utility systems has extended in recent decades. Through the Total Site, accessibility to hot steam and condensing water has become more convenience. Therefore, cogeneration systems generate key product of total site, power to electricity network as well as steam to heating purposes. Also, it can be considered to consume the cold utilities to cooling destinations. In present wo...
6 CitationsSource
#1Amir Farhang Sotoodeh (KNTU: K.N.Toosi University of Technology)H-Index: 2
#2Majid Amidpour (KNTU: K.N.Toosi University of Technology)H-Index: 31
Last. Mehrangiz Ghazi (IAU: Islamic Azad University)H-Index: 2
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In this paper, the modelling, design and optimisation of plate-fin heat exchangers has been carried out by applying the concept of constructal theory. Current heat exchangers design method call for use of one scale flow structure but constructal plate-fin heat exchanger is designed by multiple length scales with more than one construct. The objective function is to investigate the geometries that give best heat recovery or higher cold stream outlet terminal temperature. The design parameters inc...
#1Mehrangiz Ghazi (IAU: Islamic Azad University)H-Index: 2
#2Majid Amidpour (KNTU: K.N.Toosi University of Technology)H-Index: 31
Last. Hooman Farzaneh (IAU: Islamic Azad University)H-Index: 9
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In this paper, a novel method of retrofit design in total site cogeneration systems based on constructal theory is presented. In this regard, the total site cogeneration system is decomposed into three constructs: turbines, turbine arrays, and steam generators. The objective function to be minimised is the total annual cost of existing total site. Using constructal theory simplifies the optimisation procedure of total site in addition to reaching better conceptual design especially in more sophi...
2 CitationsSource
#1Mehrangiz Ghazi (IAU: Islamic Azad University)H-Index: 2
#2Amir Farhang Sotoodeh (IAU: Islamic Azad University)H-Index: 2
Last. Majid Amidpour (KNTU: K.N.Toosi University of Technology)H-Index: 31
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Exergoeconomic modelling and optimisation of a water–ethanol distillation column is performed. A model based on energy and exergy analysis is presented here. An economic model of the system is developed according to the Total Revenue Requirement (TRR) method. The objective functions based on the exergoeconomic analysis are developed. The column that includes two main decision variables is considered for optimisation to minimise the cost of the distillate. Water–ethanol distillation is chosen as ...
2 CitationsSource
#1Mehrangiz Ghazi (IAU: Islamic Azad University)H-Index: 2
#2Pouria AhmadiH-Index: 28
Last. A. Taherkhani (IAU: Islamic Azad University)H-Index: 1
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Abstract In the present study a comprehensive thermodynamic modeling of a dual pressure combined cycle power plant is performed. Moreover, an optimization study to find the best design parameters is carried out. Total cost per unit of produced steam exergy is defined as the objective function. The objective function includes capital or investment cost, operational and maintenance cost, and the corresponding cost of the exergy destruction. This objective function is minimized while satisfying a g...
51 CitationsSource
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