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Number of pages: 148 Category: Chemical - Petrochemical Engineering

Thesis of the master's degree in the field: chemical engineering, abstract. In designing the network of heat exchangers, the designer usually considers high operational flexibility in the presented plan. However, some of the changes that occur in the operating conditions of the process after the design, determine the need to modify the existing network. The purpose of the ...

Number of pages: 0 Category: Facilities - Mechanics

Master's Thesis of Energy Conversion Mechanical Engineering Abstract In recent years, due to the importance of finding energy, global warming and environmental pollution and its production sources, and the growing need of various industries for various forms of energy, as well as the large volume of its consumers around the world, the need to provide models to optimize energy ...

Number of pages: 136 Category: Facilities - Mechanics

Chapter 1 1-1-Introduction: Common fluids such as water, oils and ethylene glycol, which are usually used as heat transfer media, have a limited ability in terms of thermal properties, which is the first obstacle to compress and increase the efficiency of heat exchangers. One of the ways to improve heat transfer is to add particles to the fluid. This method is used for fluids ...

Number of pages: 95 Category: Chemical - Petrochemical Engineering

Master's Thesis in Chemical Engineering, Process Design, Abstract: In this thesis, a method for thermodynamic analysis and evaluation of energy consumption of distillation tower by using side cooling is introduced. The research done in the past was aimed at the distribution of the heat diagram and checking the possibility of adding or extracting heat from all the different parts ...

Number of pages: 115 Category: Chemical - Petrochemical Engineering

In order to obtain a master's degree in chemical engineering, abstract freezing of fans in operational units, including the hydrogen unit of Imam Khomeini Shazand Refinery in the cold seasons of the year is one of the important problems in this refinery. In order to provide a suitable solution to this problem, we must have a suitable estimate of the fan outlet temperature. The ...

Number of pages: 66 Category: Chemical - Petrochemical Engineering

Master's degree thesis in the field: Chemical Engineering Abstract In this project, an attempt was made to take a small step towards the synthesis of silicoaluminophosphate molecular sieve in nano dimensions and its use in fuel cells with methanol fuel. Therefore, in this way, nano silicoaluminophosphate was produced under optimal hydrothermal conditions. Next, XRD, FT-IR, SEM ...

Number of pages: 91 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical engineering without major. Abstract: Modeling, simulation and optimization of Jam Petrochemical Check Bed Reactor for hydrogenation of 1 and 3-butadiene. Therefore, a suitable kinetic model has been selected as a basic structure for modeling the reactor, and after that the presented model has been developed in order to match the molar ...

Number of pages: 101 Category: Facilities - Mechanics

In order to obtain a master's degree in the field of mechanical engineering, energy conversion, abstract: In this thesis, the mass and heat transfer by integral method in the flow of natural displacement of a fluid with a very low frontal near the wavy inclined wall and under the magnetic field has been investigated. The wall is permeable and as a result, the fluid can be sucked ...

Number of pages: 124 Category: Facilities - Mechanics

Master's Thesis, Energy Conversion, Abstract: In this project, we will numerically investigate a stable gas flow in a microchannel with a rectangular cross-section. The flow with a certain temperature enters the channel with a constant temperature wall. Momentum and energy equations are discretized and solved numerically. Discretization has been done by FVM method and ...

Number of pages: 91 Category: Facilities - Mechanics

Master's thesis in the field of mechanical engineering - energy conversion trend Abstract: In this research, the turbulent flow of a non-Newtonian nanofluid in a microchannel with a circular cross-section is simulated. First, the types of classification of microchannels, the methods of making microchannels, as well as the advantages and challenges of using microchannels are ...

Number of pages: 96 Category: Facilities - Mechanics

Dissertation for M.Sc Mechanical Engineering - Energy Conversion Orientation Abstract: In this research, the turbulent flow of a non-Newtonian nanofluid in a microchannel with a circular cross-section is simulated. First, the types of classification of microchannels, the methods of making microchannels, as well as the advantages and challenges of using microchannels are stated. ...

Number of pages: 144 Category: Facilities - Mechanics

Master's thesis in the field of mechanical engineering, energy conversion trend. Abstract: Considering that heat transfer is widely used in various fields of science, it is necessary to use wide recessed or raised surfaces due to physical and spatial limitations in electrical systems. The main purpose of using these surfaces is to increase heat transfer by increasing the ...

Number of pages: 131 Category: Facilities - Mechanics

Abstract: Research in the field of heat transfer of suspensions with nanometer-sized solid particles in the base fluid has started in the last decade. Recent research in the field of nanofluids has shown that the addition of nanoparticles causes a significant increase in the heat transfer of the suspension. Another common way to improve the thermal performance of devices is to ...

Number of pages: 112 Category: Facilities - Mechanics

Master's Thesis in Mechanical Engineering, Energy Conversion, Abstract: Thermal energy storage and phase change materials for use in heating and cooling systems of buildings has become an important issue in the last 20 years. When there is a mismatch between energy production and its consumption time, the issue of energy storage becomes important. In the present work, the fluid ...

Number of pages: 115 Category: Facilities - Mechanics

Dissertation for Master's Degree in Mechanical Engineering (Energy Conversion) Abstract In this thesis, the mass and heat transfer of water-aluminum oxide nanofluid in a two-dimensional porous medium under a magnetic field and in the vicinity of a vertical wall has been investigated. The boundary wall can be permeable or impermeable. The concentration and temperature of the wall ...

Number of pages: 124 Category: Chemical - Petrochemical Engineering

Master's Thesis in Energy Systems Abstract Crude oil distillation unit is one of the most important and critical operational units of any refinery. This unit often requires revision in the design of the structure (Revamping) or making small changes in its existing condition without the need to reduce or increase the basic process devices (Retrofitting) in order to achieve higher ...

Number of pages: 49 Category: Food and Packaging Industries

Dissertation for M.Sc degree, major: food microbiology, abstract Sterilized milk products that are prepared by the Faradam method, especially Faradam milk and cream, have opened their place in the diet of Iranian people in recent years. By adding healthy ingredients to products such as breakfast cream, the nutritional value of these products can be improved. In this research, ...

Number of pages: 127 Category: Facilities - Mechanics

Master's Thesis in Mechanical Engineering (Energy Conversion) Abstract Numerical investigation of the effect of microstructures on heat transfer and fluid mixing in microchannels, the need for high heat transfer from electronic packages and optical systems, etc., has created a challenge in the field of thermal management. In this context, microchannel heat wells play a great ...

Number of pages: 108 Category: Facilities - Mechanics

Master's Thesis in the field of Mechanical Engineering - Energy Conversion Abstract Numerical investigation of fluid flow and heat transfer on mesh plates with cross holes under discontinuous suction Introduction 1-1- Fluid flow on mesh plates The urgent need of modern humans to use different fuels and the problem of environmental pollution caused by improper and indiscriminate ...