Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What Does an Economizer Do in a BoilerA boiler economizer (also known as an economizer) are mechanical devices intended to reduce energy consumption or perform a useful function such as preheating a fluid. A boiler economizer is essentially a heat exchanger that makes a system more energy efficient by taking enthalpy in fluid streams that are hot, but not hot enough to be used in a boiler – hence recovering more useful enthalpy and improving the steam boiler’s efficiency.After producing steam, f

Stirling Boiler is one of the most basic variety of bent tube boiler. In most of the modern thermal power generating plants we use bent tube boiler. Stirling Boiler is one of the largest capacity boiler. A Stirling Boiler can generate as high as 50,000 kg steam per hour and can produce pressure as high as 60 kgf per cm2. This boiler was first designed in the year of 1888 by Alan Stirling so we refer the boiler as Stirling Boiler. Because of the huge capacity we can use this boiler in central pow

A fire tube boiler is a type of boiler that uses hot gases from a fire to heat water inside a series of tubes. The tubes are surrounded by water in a sealed container. The heat from the gases transfers through the walls of the tubes by thermal conduction, creating steam that can be used for various purposes.Fire tube boilers are one of the oldest and most basic types of boilers. They were widely used in the 18th and 19th centuries, especially for steam locomotives and other steam engines. Today,

Introduction of Fire Detection and Alarm SystemFire detectors are designed to detect one or more of the three characteristics of fire-smoke, heat and flame. Besides it every fire detection system must include manual call points (break glass), so that in the event of fire can be of immediate help.During a fire importance of activation of the occupants through alarm or bell is of at most vital and this can performed through alarm system.Fire alarm system shall be designed to provide round the cloc

Foam Fire Protection System is fire suppression system. Its success is mainly depends on proper mixing of foam concentrate along with air and water, to form a uniform foam blanket to extinguish flame.Back Ground of Foam Fire Protection SystemWater is known for suppressing fires, but unfortunately not best in all the cases. Water is not effective on an oil fire, and can be of no use during emergency. To suppress oil fire foam is reliable to use, since it prevent the direct contact of fire with ox

An MVWS system (short for a Medium Velocity Water Spray System) is a water-based fire protection system. MVWS systems are used to provide cooling and/or control the burning in many large scale industrial applications, such as in thermal power plants.As their name suggests, medium velocity water spray nozzles are designed to spray water at a medium velocity (i.e. the strength of the spray is weaker than HVWS systems). MVWS systems are best suited for protecting hazards involving light oils – wher

Power Plant Fire Protection System (Part-II of III)This section comprises of water based fire protection system called hydrant system in thermal power plants.Flow Scheme for a Typical 660 MW UnitHydrant SystemHydrant system shall consist of a fire water ring main network of piping along with: Isolation gate valves installed above ground on RCC pedestals around areas to be protected. Hydrant valves (external/internal) Hose cabinets Couplings Branch pipe Nozzles and water monitors along with all a

With the advent of industrialization the demand for power is also on the surge like never before. But augmenting without giving the due consideration for Fire protection and detection system would be detrimental and should not be done.Thermal Power Plants are classified under the ordinary Hazard Occupancy as per Tariff Advisory Committee (TAC) of India. The design and installation of complete fire protection system shall comply with the regulations of TAC. In the absence of TAC regulations, the

For determining power extracted from wind by wind turbine we have to assume an air duct as shown in the figure. It is also assumed that the velocity of the wind at the inlet of the duct is V1 and velocity of air at the outlet of the duct is V2. Say, mass m of the air is passed through this imaginary duct per second.Now due to this mass the kinetic energy of wind at the inlet of the duct is,Similarly, due to this mass the kinetic energy of wind at the outlet of the duct is,Hence, the kinetic ener

For determining power extracted from wind by wind turbine we have to assume an air duct as shown in the figure. It is also assumed that the velocity of the wind at the inlet of the duct is V1 and velocity of air at the outlet of the duct is V2. Say, mass m of the air is passed through this imaginary duct per second.Now due to this mass the kinetic energy of wind at the inlet of the duct is,Similarly, due to this mass the kinetic energy of wind at the outlet of the duct is,Hence, the kinetic ener