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Showing posts from September, 2017

Thermal Power Plant : Principle, Parts, Working, Advantages and Disadvantages

Basic Introduction or Principle: We all are aware with the term "Generator". A device which converts mechanical energy into electrical energy is known as generator. This generator makes rotate with the help of some kind of external energy. When this energy extract from the energy of steam, the plant is known as steam power plant.  A simple steam plant works on Rankine cycle. In the first step, water is feed into a boiler at a very high pressure by BFP (boiler feed pump). This high pressurized water is heated into a  boiler   which converts it into high pressurized super heated steam. This high energized steam passes through steam  turbine  (a mechanical device which converts flow energy of fluid into mechanical energy) and rotate it. Owing to extract full energy of steam, three stage turbines is used which is known as LPT (Low pressure turbine), IPT (intermediate pressure turbine) and HPT (High pressure turbine). The turbine shaft is connected to the...

Boiler vs Furnace: Which is Better?

Today we will discuss about boiler vs furnace. In most of contraries, every house is equipped with one of these two units for heating purpose. Both of these systems are used to heat a house in cold weather or whenever they need.  The furnace is an air heating system in which air is preheated by passing over a hot coil and these heated air supply to the whole house through duct. This heated air keeps the house warm.  On the other hand the boiler is water heating system in which water is preheated through the fuel and this heated water supply to the radiator situated in every room through pipes. The heat is supplied to the room from radiator through radiation and convection. Now we compare both of these systems.   Boiler vs Furnace: S. No. Boiler Furnace   1. Boiler is a water heating system. It uses hot water pipes which passes heat the radiator of every room. Furnace is an air heating system. It uses ductwork to passes air t...

Difference between Fire Tube Boiler and Water Tube Boiler

Today I am going to tell you difference between fire tube boiler and water tube boiler. The boiler is divided into two main types. One is known as fire tube boiler and the other one is known as water tube boiler. These boilers is largely used in power development and other industrial like sugar industries, cotton industries etc. for steam generation. The main difference between fire tube and water tube is that i n fire tube boiler the flue gases flow in the tubes and water flows from the shell and i n water tube boiler, water flows from the tubes and the flue gases from the shell or passes over the tubes.  This is the key difference between these boilers. Now I am going to tell you some hidden difference between these boilers. ALSO READ  :  T YPES OF BOILERS Difference between Fire Tube Boiler and Water Tube Boiler: Fire Tube boiler Water Tube Boiler 1. Hot flue gases flow inside the tube and the water outside the tube. Water flows in...

What is a boiler? What are parts of a boiler?

What is a boiler? A boiler is a closed vessel, which is made by metal, in which water is converted into steam by using the heat energy of fuel. It can generate steam at desire temperature, pressure and the heat generation rate. According to the A.S.M.E. the boiler is define as " A combination of apparatus for producing, finishing and recovering heat together with the apparatus for the transferring the heat so made available for the fluid being heated and vaporized." Image Source  :  http://news.cision.com/fulton-limited/r/fulton-launches-new-range-of-horizontal-firetube-boilers,c9363532 Principle: In a boiler, the heat energy of the flue gases transfer to the water through convection. The fuel is burnt in the furnace which produces flue gases. These flue gases pass over the water containing in shell or tube according to the type of boiler. The heat of the flue gases transfer to the water and convert it into steam. This is the basic principle of boiler. ...

Cochran Boiler: Main Parts and Working

Cochran Boiler: It is a simple fire tube boiler which has multiple fire tubes. These tubes increase the heat transfer area of boiler. Water passes over the tubes. The heat is transfer from fire tubes to water through convection. Image Source :  https://www.youtube.com/watch?v=hVcqqaEulVA Main parts of Cochran boiler: 1. Shell: The main body of the boiler is known as shell. It has vertical shall which has hemispherical top head. This hemispherical top gives higher volume to area ratio which increases steam capacity. 2. Grate: The area where flue is placed known as grate. 3. Combustion chamber: It is at the bottom side of the boiler. The combustion chamber is connected to the furnace. 4. Fire tubes: There are various fire tubes which one end is connected to the furnace and other by chimney. 5. Fire hole: The small hole is provided at the bottom of combustion chamber to place fuel is known as fire hole. 6. Furnace: It works as a mediator of...