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Nirajkumar Mehta

Nirajkumar Mehta
ITM (SLS) Baroda University · Mechanical Engineering

B.E., M.E., Ph. D. Mechanical Engineering

About

50
Publications
141,245
Reads
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398
Citations
Additional affiliations
August 2014 - May 2018
Vadodara Institute of Engineering
Position
  • Professor (Assistant)
July 2012 - August 2014
Noble Group of Institutions
Position
  • Head of Department
July 2008 - June 2010
Noble Group of Institutions
Position
  • Lecturer
Education
January 2014 - March 2018
Rai University
Field of study
  • Mechanical Engineering
July 2010 - July 2012
Gujarat Technological University
Field of study
  • Thermal Science
June 2003 - June 2007
Hemchandracharya North Gujarat University
Field of study
  • Mechanical Engineering

Publications

Publications (50)
Article
Full-text available
Furnaces are most commonly used for melting of ferrous metals and its alloy materials. Induction furnaces use electrical power so that they are more advantageous as no fuel is required. It is a very critical problem to find life span of induction melting furnace wall under thermal fatigue conditions. The life cycle of induction furnace refractory w...
Article
Heat transfer is necessary to enhance the efficiency and life of any compressor. Convection is the frequent used method for natural cooling purpose due to its higher heat transfer rate. Fin is an area which extends from a surface to increase the rate of heat transfer by convection. Experiment is carried out on fin of reciprocating air compressor ha...
Article
Furnaces are most commonly used for melting of ferrous metals and its alloy materials. Induction furnaces use electrical power so that they are more advantageous as no fuel is required. It is a very critical problem to find life span of induction melting furnace wall under thermal fatigue conditions. The life cycle of induction furnace refractory w...
Article
Full-text available
AJM has become a very useful method for micro machining. It has enormous number of distinct advantages over the other non-traditional cutting and drilling methods, that include high machining versatility and minimum stresses on the substrate. This abrasive jet machining project is used for drilling holes on brittle materials like glass. Holes can b...
Article
Full-text available
Furnaces are most commonly used for melting of Iron and its various alloy materials. Induction furnaces are using electric power supply so they are more beneficial as no fuel is required. It is an extremely critical to find life span or life cycle of Induction Melting Furnace Wall under thermal load change conditions. The low cycle thermal fatigue...
Article
Full-text available
Furnaces are most commonly used for melting of Ferrous Metals and its alloy materials. Induction furnaces use Electrical Power so that they are more advantageous as no fuel is required. It is a very critical problem to find life span of Induction Melting Furnace Wall under thermal load variation. The life cycle of induction furnace refractory wall...
Article
Full-text available
Furnaces are used for melting many materials like cast iron and steel for casting process. In this research paper, we had done Finite Difference Modelling of Induction melting furnace refractory wall made of alumina ramming mass using cylindrical coordinate system. We have divided actual geometry of furnace refractory wall into 14 elements and 24 n...
Article
Full-text available
The Research area of engineering of the electronic system cooling is having wide application nowadays. Therefore, in the present work, Aluminum is chosen as the material for the heat sink. In the present work effect of various shapes of cross sections of fins on the mother board is studied keeping the inlet air velocity, temperature of the ambient...
Article
Full-text available
Today's world requires speed on each and every field. Hence rapidness and quick working is the most important. Nowadays for achieving rapidness, various machines are manufactured by man. The engineer inconstantly conformed to the challenges of bringing ideas and design in to reality. New machines and techniques are being developed continuously to m...
Article
Full-text available
Heat exchangers are the essential accessories designed to provide highest heat transfer inside the minimal area feasible. Heat exchangers are always regarded important for research in the field of thermal engineering. Nano particles like suspensions of ZnO, CuO, Fe3O4, TiO2, and Al2O3 in water is the new revolutionary solution to increase the effec...
Article
Full-text available
Induction furnaces can also be labeled largely into three classes: (1) Core-type low-frequency induction furnaces, (2) core-less high-frequency induction furnaces, and (3) core-less low-frequency induction furnaces. All induction furnaces operate on the principle of inducing an electric present into the metallic to be heated. With the aid of supply...
Article
Full-text available
Heat transfer is a very main phenomenon within the investigation of any inside combustion engine. Thermal efficiency of interior combustion engine is immediately linked with heat transfer. Consequently, heat transfer enhancement can make stronger thermal efficiency of inner combustion engine. In this case, we had regarded air cooled IC Engine. Desi...
Article
Full-text available
Sun oriented Energy Technology has a critical part to play in the present Energy and Environment crises. Sunlight based Concentrator Technology has great potential for different applications, including power age furthermore, process heating applications. We have developed a solar heating furnace. The a structure that uses concentrated solar power t...
Article
Full-text available
This paper deals with a detailed literature survey related to solar heating furnace. It also incorporates its applications and temperature and stress analysis of furnaces. A solar heating furnace is a structure that uses concentrated solar power to produce high temperature, usually for industry where the high temperature required for the processes....
Article
Full-text available
This paper is a review of thermal analysis and testing of different refractory materials.Refractories are ceramic based materials that can withstand unusually high heat as well as abrasion and the corrosive effect of acid and alkalis. The Purpose of Refractories are in furnace, stills for the cracking of petroleum, electrolytic cells for aluminium...
Article
Full-text available
In this paper a detailed literature survey is done for the mathematically advanced computer heat transfer models for the analysis of cylindrical and spherical induction furnaces. Handling of furnace unit is not a simple issue. By some research paper referred we are founded issues of cylindrical and spherical furnaces to require make mathematical mo...
Article
Full-text available
Furnaces are most important as it is constantly used for melting of materials. Induction furnaces are more worthwhile as no fuel is required. It is a main issue to go looking out life cycle of Induction Melting Furnace Wall under load variant. The induction melting furnace wall is made-up of Silica Ramming Mass, Alumina Ramming Mass, Magnesia Rammi...
Conference Paper
Full-text available
It is always highly profitable to apply Automated Guided Veh icles for advanced material handling as Automated Guided Vehicles are functional mob ile robots which are typically used for automated material management between desired points with the fixed speeds at work space. The purpose to write this paper is to discuss many extensive efforts made...
Article
Full-text available
Furnaces are most almost continuously used for melting of materials. Induction furnaces are more invaluable as no fuel is required. It is a difficulty to search out life cycle of Induction Melting Furnace Wall beneath load variant. The induction melting furnace wall is made-up of zirconia which is one variety of refractory material. The failure hap...
Article
Full-text available
Cryogenic storage tank is a device for storage and gasification of cryogenic working fluid. Cryogenic storage tank can reduce the cryogenic fluid, safety, suffer against high pressure and high-rate fueling requirements. Usage of guide tube, two side insulation and different insulation are latest research scope on cryogenic tank. This review paper i...
Article
Full-text available
In automobile engine connecting rod is a high volume production, critical component,Connecting rod is the Central link between the piston and the crank.We all know that the purpose of the connecting rod is to transfer the reciprocating motion of the piston into rotary motion of the crankshaft. &transmitting the thrust of the piston to the crankshaf...
Article
Full-text available
Heat Exchanger is a device used intensively for heat transfer form fluid. Thus all various type of heat exchanger .Our concentration is on shell and tube type heat exchanger .We will design the heat exchanger by bell delware method to increase heat transfer by using various material and geometries. Shell-and-tube heat exchangers are widely used in...
Article
Full-text available
Furnaces are most commonly used for melting of materials. Induction furnaces are more beneficial as no fuel is required. It is a problem to find life cycle of Induction Melting Furnace Wall under load variation. The induction melting furnace wall is made of magnesia ramming mass which is one kind of refractory material. The failure occurs due to cy...
Article
Full-text available
Furnaces are useful for melting different materials for casting process. In this research paper, we had done advanced heat transfer analysis of induction furnace wall made of silica ramming mass using explicit finite difference method. We have divided actual geometry of furnace refractory wall into 14 elements and 24 nodes. We have derived explicit...
Article
Full-text available
Furnaces are most commonly used for melting of materials. Induction furnaces are more beneficial as no fuel is required. It is a problem to find life cycle of Induction Melting Furnace Wall under load variation. The induction melting furnace wall is made of alumina ramming mass which is one kind of refractory material. The failure occurs due to cyc...
Article
Full-text available
Furnaces are useful for melting different materials for casting process. In this research paper, we had done advanced heat transfer analysis of induction furnace wall made of magnesia ramming mass using explicit finite difference method. We have divided actual geometry of furnace refractory wall into 14 elements and 24 nodes. We have derived explic...
Article
Full-text available
Furnaces are most commonly used for melting of materials. Induction furnaces are more beneficial as no fuel is required. It is a problem to find life span of Induction Melting Furnace Wall under load variation. The induction melting furnace wall is made of silica ramming mass which is one kind of refractory material. The failure occurs due to cycli...
Conference Paper
Full-text available
Furnaces are useful for melting different materials for casting process. In this research paper, we had done advanced heat transfer analysis of induction furnace wall made of alumina ramming mass using explicit finite difference method. We have divided actual geometry of furnace refractory wall into 14 elements and 24 nodes. We have derived explici...
Conference Paper
Full-text available
To reduce electricity demand to cooling in summer is possible by using Ejector refrigeration system. Industrial Waste heat, Solar energy, other source is used for generator in Ejector Refrigeration System (ERS).Today Researcher is trying to develop better configuration and design of ERS which has higher cooling capacity and higher C.O.P. To design...
Article
Full-text available
Furnaces are useful for melting different materials for casting process. In this research paper, we had done advanced heat transfer analysis of induction furnace wall made of zirconia using explicit finite difference method. We have divided actual geometry of furnace refractory wall into 14 elements and 24 nodes. We have derived explicit finite dif...
Article
Full-text available
In the present study, recent research is considered about new generation refrigerant R-1234yf and R-1234ze (E). Chlorofluorocarbons (CFCs) had been phased out under the Montreal Protocol; CFC alternative refrigerants are searching for based on the condition of no chlorine atoms because of zero ODP. It seemed that conversion from CFC refrigerant to...
Conference Paper
Full-text available
Furnaces are most commonly used for melting of materials. Induction furnaces are more beneficial as no fuel is required. It is a problem to find life of Induction Melting Furnace wall under thermal fatigue. The induction melting furnace wall is made of Magnesia ramming mass which is one kind of refractory material. The failure occurs due to cyclic...
Conference Paper
Full-text available
It is easy to solve simple problems of Heat Transfer with Analytical Methods but for Complicated Problems, we have to go for Numerical Methods. Here, we are solving a Multi-Dimensional Heat Transfer Problem, which includes application of Implicit – Explicit Method for Calculation of Temperature Distribution. Computer Program is also made for the so...
Conference Paper
Full-text available
Furnaces are most commonlyusedfor melting of materials. Induction furnaces are morebeneficial as no fuel is required. It is a problem to find life of Induction Melting Furnace wall under thermal fatigue. The induction melting furnace wall is made of Zirconia which is one kind of refractory material. The failure occurs due to cyclic thermal stresses...
Conference Paper
Full-text available
Today crisis in convection fuel, non-convectional technics should be used for power generation.In recent years, progress on solar cooling system has increased as nowadays. Therefore, this review paper focuses in solar cooling system using ejector, ejector Configuration for Solar Cooling System, CFD of ejector, ejector design rules, behavior of ejec...
Conference Paper
Full-text available
In early days, fuel fired furnaces were used for material melting in different casting industries like Cupola Furnace. But from 1930 onwards, Induction Furnaces had come in the Casting Industries. There are number of Improvements in Insulation, melting time, chemical composition, lifespan and Efficiency. There is a lot of research and analysis is g...
Article
Full-text available
Furnace is a term used to identify a closed space where heat is applied to a body in order to raise its temperature. An induction furnace is an electrically run furnace used for melting and heating (heat treatment) metals. Alumina ramming mass is used as refractory material to prevent losses. Proper optimization is also needed in thickness. Increas...
Article
Full-text available
The Condenser is a heat transferring device. It is used to remove heat from hot refrigerant vapour. Using air cooling method condenser changes the vapour to a liquid. Convection mode of heat transfer plays very important deciding factor transferring heat from condenser tube to atmosphere. This paper presents simulation results of hot-wall condenser...
Article
Full-text available
now a day, products can be produced by modern technology, which uses computer software, hardware and firm ware in industries. It is needed to use CNC lathe machine to get more accurate dimensions and irregular shape. So, CNC machines are becoming more and more important in modernized industrialization. There are many conventional lathe machines in...
Article
Full-text available
Now a days, products can be produced by modern technology, which uses computer software, hardware and firm ware in industries. It is needed to use CNC lathe machine to get more accurate dimensions and irregular shape. So, CNC machines are becoming more and more important in modernized industrialization. There are many conventional lathe machines in...
Article
Full-text available
Furnaces are most commonly used for melting of materials. Induction furnaces are more beneficial as no fuel is required. It is a problem to find life of Induction Melting Furnace wall under thermal fatigue. The induction melting furnace wall is made of alumina ramming mass which is one kind of refractory material. The failure occurs due to cyclic t...
Article
Full-text available
An induction furnace is an electrically run furnace used for melting & heating (heat treatment) metals. Induction heating is widely used in today's industry, in operations such as metal hardening, preheating for forging operations. The aim of present work study is to prepare a finite element model of induction furnace. The result of finite element...
Article
Full-text available
There are a wide range of physical defects which occur during metal forming processes. These defects, which may occur on the surface or be internal, are undesirable not only because of the surface appearance, but because they may adversely affect the strength, formability and other manufacturing characteristics of the material. Some physical defect...
Article
Full-text available
This paper presents results of finite element analysis of induction heating problems considering temperature dependence of material characteristics. In this analysis, we have used the three-dimensional finite element method in order to correctly express induction heating coil's shapes and to make clear its effects on temperature distributions. The...
Article
Full-text available
Furnaces are most commonly used for melting of materials. Induction furnaces are more beneficial as no fuel is required. It is a problem to find life of Induction Melting Furnace wall under thermal fatigue. The induction melting furnace wall is made of silica ramming mass which is one kind of refractory material. The failure occurs due to cyclic th...
Article
Full-text available
A heat transfer analysis was made in earlier days by using different analytical methods; these methods are quite complicated in terms of size & methods. In today's scenario the different methods are used for analysis of thermal system or thermal components by using Numerical method which is very useful for analysis & results oriented with accuracy....
Conference Paper
Full-text available
With the entry of Computer for Analysis, Uses of Numerical Methods are increased. Finite Element Analysis, Finite Difference Analysis and Finite Volume Method come into the picture. Then with the combination of Numerical Methods, Computer Programming and Fluid Dynamics CFD Analysis came into existence which is very useful in multi-disciplinary appl...
Conference Paper
Full-text available
Hydro power is the top most renewable energy source and micro hydro power plant is one of the best solutions for energy crisis in remote, rural and hilly areas, where electricity is not available. In micro hydro power plants cost is equally important criteria as the efficiency. The centrifugal pumps can be used as the hydraulic turbine(PAT) as it h...

Questions

Questions (46)
Question
Guideline to update university syllabus.
Question
How to get promoted as professor as soon as possible?
Question
Is it required to have a cross ref id for paper?
What are the advantages?
Question
What criteria decide best paper award?
Is it related with quality of research?
Why?
Question
What are the criteria for best PhD Thesis Award?
Why?
Question
Is it ethical to use money for publishing your research?
Question
Is scopus following any criteria to include any journal?
Why?
Question
How UGC is giving approval to journals? Why?
Question
Application of rewriter is ethical or not?
Question
I want to know that how plagiarism is related with quality of research.
Question
I want to know about laboratory timings for PhD Students.
Question
I want to know about importance of ethics in research work.
Question
Please suggest.
Question
Please suggest.

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Projects

Projects (6)
Project
To design and analysis of connecting rod for various geometries and materials.
Project
To design and manufacture a heat exchanger for use of different kinds of nano fluids. It will be operated by different AlO3 and CuO nano particles with water.
Project
Manufacturing and assembly is done to convert convectional lathe machine into CNC Machine.