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Benson point at which vertical steam separator run dry because entering water is converted completly to steam.
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What are the types of once through boilers?
Benson Boiler , Sulzer boiler are the main subtypes of once-through boiler
What are critical and super critical boilers?
critical boiler operating steam parameter 221.12bar and 375 centigrate . you can rise in pressure and temperatureabove the critical point. that is called supercritical boiler.
What is the ratio of a boiler burner indicates the flexibility of the burner to cope with variations of boiler load without losing efficiency of atomisation?
turndown ratio
Define boiler and classification of boiler?
Boiler can be classified as below
What is afbc boiler?
Atmospheric Fluidized Bed Combustion Boiler (AFBC boiler) is a type of operational boiler. In a AFBC boiler a little more fluidized bed combustor is added than a conventional shell boiler.
Where are the supercritical boilers installed in India?
Bharat Heavy Electricals Limited (BHEL) has despatched boiler columns for the first supercritical boiler, being manufactured in India. These columns will be used for installation of BHEL-built supercritical Boilers at Barh Thermal Power Project Stage-II, located about 75 kms from Patnain Bihar
What are the types of once through boilers?
Benson Boiler , Sulzer boiler are the main subtypes of once-through boiler
What are critical and super critical boilers?
critical boiler operating steam parameter 221.12bar and 375 centigrate . you can rise in pressure and temperatureabove the critical point. that is called supercritical boiler.
What is boiler load?
Boiler load is the total "work" performed by the boiler. In residential application the boiler load usually refers to the total heat lost in a home on the coldest day of the year and is measured in the USA by British Thermal Units per hour. To find the load the accepted practice is to use the "Manual 'J' method. Appropriate software and some experience is necessary to gain meaningful results and proper size a boiler to the load. Boilers that are oversize use more fuel, suffer component failures and can create discomfort by lowering the average water temperature. Boilers sized below the load will not satisfy the thermostat on the coldest days of the year.
What is supercritical boiler?
The following extract taken from an article by Ingo Paul in Energy Issues No 19 April 1999 published by the World Bank [external link] briefly describes the difference between a subcritical and a supercritical boiler. "Supercritical" is a thermodynamic expression describing the state of a substance where there is no clear distinction between the liquid and the gaseous phase (i.e. they are a homogenous fluid). Water reaches this state at a pressure above 22.1 megapascals (MPa) The "efficiency" of the thermodynamic process of a coal fired power (sic) describes how much of the energy fed into the cycle is converted into electrical energy. The greater the output of electrical energy for a given amount of energy input, the higher the efficiency. If the energy input to the cycle is kept constant, the output can be increased by selecting elevated pressures and temperatures for the water-steam cycle. Up to an operating pressure of around 19 MPa in the evaporator part of the boiler, the cycle is sub-critical. This means, that there is a non-homogeneous mixture of water and steam in the evaporator part of the boiler. In this case a drum-type boiler is used because the steam needs to be separated from water in the drum of the boiler before it is superheated and led into the turbine. Above an operating pressure of 22.1 MPa in the evaporator part of the boiler, the cycle is supercritical. The cycle medium is a single phase fluid with homogeneous properties and there is no need to separate steam from water in a drum. Once-through boilers are therefore used in supercritical cycles. www.whizkris.com
What is the ratio of a boiler burner indicates the flexibility of the burner to cope with variations of boiler load without losing efficiency of atomisation?
turndown ratio
What is the difference between the operation of a automatic boiler and manual boiler?
boiler are working on same principal but automatic and manual boiler has difference that manual boiler working at single element loop and automatic boiler work at three element loop.single loop means when fuel increase mean load increase on boiler by adjusting fuel operator has to adjust steam drum level manualy , while automatic means when load increas, fuel increase steam drum level adjust automaticaly by watching fuel consumption.
What is the explanation for the working of a benson boiler?
Benson Boiler is a water tube high pressure boiler having forced circulation. It works on the principle that if the boiler pressure is raised to critical pressure (225 kg/cm^2) then there is no formation of steam bubbles Because the steam and water at this pressure will have the same Density. To achieve this water is fed to the boiler at critical pressure . At this pressure water will be directly converted to superheated steam as the latent heat at critical pressure is zero. Overall efficiency of plant is decreased as a lot of energy is consumed by feed water. Operating the boiler at a slightly lower pressure than the critical pressure efficiency can be increased. Thermal efficiency upto 90% can be achieved.
What size boiler do you need for 1700 sq ft home?
In order to determine what size boiler you need, you will need to have a Manual J Load Calculation performed on your home.
Is there any application of supercritical fluid extraction in refinery?
Supercritical fluid extraction is now used in laboratories.
What is PA Fan discharge pressure and bed height maintained in IR CFBC boiler?
1300 mmWc @ full load
What you will do if both feed pumps tripped when boiler is in service?
Immediately the load on Generator should be reduced to Zero n desynchronised, and the turbine be tripped.
