What Is Thermal Engineering?

Introduction:

Thermal Engineering is one of the subjects in the Mechanical Engineering. It is even a branch in the post graduation (Master of Engineering). The word thermal means the heat so, we can define the thermal engineering as the study of heat and its properties or behaviour.

The Thermal Engineering subject do consist of many sub parts and subjects they are according to the basic concepts, calculations, and applications of the heat, thermal devices, and their work. Even the topic and concepts of engine, refrigerations, air conditioners, etc will be part of the thermal engineering.

The sub parts or subjects in the thermal engineering are as follows 

• Thermodynamics
• Thermal Engineering-I
• Thermal Engineering-II
• Refrigeration and Air Conditioning

 Click here to read the basic concepts and articles related to the Thermal Engineering and its sub-parts.

What is Thermodyanamics ?

 so, thermodynamics is a subject in the mechanical engineering that deals with the concepts of the heat and its behaviour. We can say that the thermodynamics is the basic and starting step to the thermal engineering. You can learn number of basic concepts, and topics related to the heat and devices.

What is Thermal Engineering-I ?

Thermal Engineering-I will be the application of the thermodynamics, it means we study about the applications of the concepts that we read in the thermodynamics. For suppose, if we study about the air cycles in the thermodynamics then we will study about the engines and its working in the thermal engineering-I.

What is Thermal Engineering-II ?

Thermal Engineering-II will be advanced and applications of the thermodynamics subject. We study about the boilers, power plants, and its applications.

What is Refrigeration and Air Conditioning ?

Coming to the refrigeration and air conditioning, we study about the refrigerators and AC's, their working and designing. In this subject, we even read the concepts related to the environment moisture and how to control the room temperature using components and devices.

So, this is actually what is thermal engineering. Hope you got the points.

What Is Cast Iron And Types Of Cast Iron?

What is Cast-Iron?

Cast-Iron is one of the ferrous materials that does consist the carbon as its constituents. The carbon percentage will vary according to the type of material. Here, the cast-iron consists of 1.7-4.5 % of carbon in its composition. Of course, in addition to the carbon, there are different types of materials and compositions that will be engaged in it.

Type of Cast-Iron:

Different types of Cast-Iron are as follows:

• Grey Cast-Iron
  
• White Cast-Iron
• Malleable Cast-Iron
• Chilled Cast-Iron
• Ductile Cast-Iron

 Advantages of Cast-Iron:

 The few advantages of Cast-Iron are as follows:

• Cast-Iron is one of the best suitable materials for the casting process.
• Cast-Iron is tough and reliable.
• Cast-Iron does consist of high thermal conductivity which will withstand high temperatures.
• Cast-Iron is brittle in nature.

What Is Engineering Mechanics In Mechanical Engineering?

What Is Engineering Mechanics?

Engineering Mechanics is one of the important subjects in the Mechanical Engineering. Engineering Mechanics is all about learning of the concepts and mathematical expressions of the applied forces on the static and dynamic loads.

To understand what is engineering mechanics let us take an example.

Assume a brick and place it on any surface. We can say that the brick is static (static means body at resting position or solid body without any movement) and no force is applied on it. Now, we need to remember the concept called Newton’s First Law of Motion.

Newton’s First Law of Motion: Newton’s first law states that “any body will be at rest until and unless an external force is applied on it”

Now, apply some force on one of the sides of the brick and observe whether the brick is moved or not.

Why the brick is not moved?

Even though we applied the force on the brick, it is not moved because the force we applied on the brick is not enough to overcome the mass of the brick and gravitational force that brick experience. This is the reason why brick is not moved. At this point, we have to remember a concept called Newton’s Second Law of Motion.

Newton’s Second Law of Motion: Newton’s Second Law of Motion states that “the force applied on any body is directly proportional to the mass of the body and acceleration”. The mathematical expression of the Newton’s Second Law of Motion is as follows: 

F = m*a

So, it is understood that to make the brick to move, the force we apply on the brick should be greater than the multiplication of the mass and the acceleration. By this example we understood the importance of force, mass, gravitational force, and acceleration.

So, how do we know amount of force that we need to apply to move brick and on what direction should the force need to apply to move the brick, and what other forces experience by brick are explained by the Engineering Mechanics.

In Engineering Mechanics, we learn all the unknown, unseen forces that a body experience. We do even analyze them with Free Body Diagrams. As this is engineering level, the applications and analysis will be up to the mark.

We will learn lot of concepts, mathematical expressions, and applications in the mechanical engineering mechanics to analyze the forces in machines, components, devices, and automobiles. We do even find this engineering mechanics subject in the field of Civil Engineering because they also need to study about the materials, columns, buildings too.

So simply, we can say that the engineering mechanics is a necessary fundamental subject in the physical area (it means where the physical components are involved). We not only learn the fundamentals of engineering mechanics but also we will take it to the advanced level in the upcoming subjects like Strength of Materials, and Theory of Machines.

Learning engineering mechanics will not limit to one semester, it will helpful in the upcoming semesters in Mechanical Engineering.

What are the Subjects in Mechanical Engineering?

 

As the Mechanical Engineering is a professional course so mechanical engineering consists of Research, designing, Fabrication, Management, and Calculation subjects. So, let us discuss about few subjects.

Engineering Mechanics:

Engineering Mechanics is the basic and most important subject that every mechanical engineering should learn. It deals with the forces and its motion of static and dynamic bodies. For example; if a force is applied on a body, then it will tend to move so in the mechanics we will study about these forces, its direction, and the motion. We read this type of theories in our school taught by our lectures or tutors.

Engineering Drawing:

Engineering Drawing is the subject where we can learn the professional drawings like scaling, projections of the shapes, symmetry drawings, etc. As a mechanical engineer we need to draft the things that are required in few fields.

Materials & Metallurgy Science:

This subject is another important and precious subject in mechanical engineering; it is all about the materials and their preparation. We can learn how a material will get into its form by heating and cooling. We can learn the compositions of chemistry in each material or metal and its applications in real fields.

Thermodynamics:

Thermo means the heat and the dynamic means the study of forces and its motions so we can say that the thermodynamics is all about studying the heat and its applications. We will learn different concepts and basic cycles that are responsible for automobile engines.

Machine Tools:

Machine tools are the cutting tools that are used in engineering purposes. As the technology is increased and required lot of operations to be done so machine tools helps us to learn about different types of cutting machines.

Thermal Engineering:

Thermal Engineering subject is the advanced learning of the thermodynamics where in thermodynamics we will learn about the concepts and basic cycles but thermal engineering is the applications of the thermodynamics where we learn about the engines, power plants, etc.

Strength of Materials:

Strength of Materials is another beautiful subject in mechanical engineering field; it is all about the materials and their behavior at different situations while force or load applied. We learn lot of basic concepts in this subject that requires for designing a material.

Design of Machine Members:

This subject is the extension of the strength of materials and teaches how a machine member or component can be designed considering number of factors. For example this subject will help us to design the bolts, nuts, springs, etc.

Theory of Machines:

Theory of Machines subject is also about the machines, their internal mechanisms, and design; we can learn the basic concepts in the mechanisms of machines and their applications. For example we can learn about the gears, gear trains, governors, etc and their designing concepts.

Automobile Engineering:

As we are much related to this word automobile, in this subject we learn about the components, their concepts, and working conditions.

Fluid Mechanics & Hydraulic Machines:

Fluid Mechanics is the study of the fluids behavior at different situations and their applications, Hydraulic Machines are the sub part where we learn about the machines that work on the fluids like water and gases.

So, these are the few and important subjects in the mechanical engineering and their related field.

What is Machine Tool and Its Basic Concepts?

 What is Machine Tool?

A Machine Tool is a type of cutting tool that uses the links, pairs, and mechanisms for its working. The main aim of the machine tool is machining (means cutting) the component according to our requirement.

So, in this post we will learn a few basics concepts use in the workshop.

This post contains:

• What is a Machine operator?
• What is Tool Technology?
  
• What are the 7 basic types of Machine Tools?
• Advantages of machine tool
  

What is a Machine operator?

A machine operator is the person (or a skilled labour) that who works on the machine tool. He will machine (means cutting) the component. A machine operator should be technically good at machine tool internal mechanism, tool technology, its usage and able to perform every task that a machine tool can. 

What is Tool Technology?

The tool technology is the study of technical concepts of the tools that are used in the machines and other mechanical fields. The tools are the components that are used to machine (or cut) the components.

What are the 7 basic types of Machine Tools?

The 7 basic types of machines tools in the workshop are 

1. Lathe Machine: Lathe Machine is a type of machine tool that is used to perform the number of operations on it. A lathe machine can be used to perform Turning, Facing, Boring, Tapering, Reaming, etc. It is the most important and most usable machine tool. The lathe can be called as king or mother of all machine tools.
   
2. Shaping Machine: A shaping machine is also called as shaper, it is another type of machine tool that is used to flatten the component.
   
3. Planing Machine: The planing machine is also called as planer, the planer working principle is similar to the shaping machine but there will be difference between shaper and planer working procedure.
   
4. Grinding Machine: The grinding machine is used to grind (smoothen) the surfaces of the materials. Of course even the shaper and planer can do this operation but the grinding machine can grind the material up to milli-meters size.
   
5. Slotting Machine: The slotting machine tool is used to perform the slots on the materials.
   
6. Drilling Machine: The drilling machine is used to perform the drills (holes) in the components.
   
7. Milling Machine: The milling machine is used to perform the milling (or deep grooves) operation

Advantages of Machine Tool:

The advantages of machine tool are as follows:

• We can perform number of operations easily using the different components.
• If we talk about the lathe machine, it can perform maximum number of operations alone itself that others can.
• A good finishing of products.
• Machine tool can produce the products that we use in our daily life. For example, the doors we use in our houses are produced using the cutting machine, hand grinders, etc. So, like this we can say that the machine tools are responsible for our daily needs things.
  

These are the advantages of machine tool.

 

What is Mechanical Engineering?

 Mechanical engineering is one of the ever-green and ever-gold branches in the field of engineering (even in diploma or polytechnic). When it comes to India, the graduation course is called Bachelor of Technology (B.Tech) or Bachelor of Engineering (B.E) , and the Master's course is called the Masters of Technology (M.Tech) or Masters of Science (MS) .

If you are so interested in Machines, Machine Tools like Lathe, Shaper, Planer, etc. Mechanical Devices like Vernier Calipers, etc. Automobile Parts and Components, etc then you can choose mechanical engineering as your stream in graduation. In India, you have professional courses like Diploma, Bachelor of Technology, Bachelor of Engineering, etc. There are a lot of opportunities for mechanical engineers in many companies and great scope too.

How To Do Mechanical Engineering After 10^th?

    Coming to Diploma, we can call it polytechnic too; it is the course you can choose after your matriculation or 10th or higher education. To enter into the polytechnic you need to attempt a common entrance examination. When it comes to Telangana state, we call that entrance exam TS POLYCET (Telangana State Polytechnic Common Entrance Test), and coming to the state Andhra Pradesh, we call it as AP POLYCET (Telangana State Polytechnic Common Entrance Test) similarly, every state does have its own name for its entrance exam.

How To Do Mechanical Engineering After 12^th?

    Talking about engineering or bachelor of technology or bachelor of engineering; it is the professional course that we can choose after our +2 or 2 years intermediate or after polytechnic. As like as polytechnic, we need to go through a common entrance test and depends upon that we can choose the colleges for admissions.

    If the engineering course is under Jawaharlal Nehru Technological University then the course can be called Bachelor of Technology (B.Tech) or if the engineering course is under Osmania University then the course can be called Bachelor of Engineering (B.E).

List of Subjects in Mechanical Engineering:

    So, whatever be the course whether polytechnic or B.Tech or B.E we do have the same subjects and maybe vary one of two. The subjects may be as follows

• Engineering Mechanics
• Strength of Materials
• Thermodynamics or Thermal Engineering
• Heat Transfer
• Fluid Mechanics & Hydraulic Machines
• Theory of Machines
• Few more.

There will be master courses that we can choose after graduation.

Not only the state, but there are also central level exams that allows us to join in IITs, NIT’s, etc for pursuing the engineering courses. These are high-level competition based and needs high subject knowledge with a good basic concepts foundation. Every aspires of engineering should be very good at basic concepts and technical points in their subjects. It can be achieved only when the students are interested in the course so, it is suggested to the students of every course that they should be regular at classes, revising the concepts, technical points, interview questions, and referring a few subject textbooks.  

If students are good at these whole things then it is very easy for every student or individual to crack any type of interview after or while pursuing the final year of graduation. So, enjoying the subject and learning the things is a must-follow exercise for every student.