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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
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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 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 are the differences between commercial and domestic boilers?
The boiler industry distinguishes between domestic and commercial boilers. A boiler is considered domestic if it is with the range of a 70 kW maximum limit. Any installation above 70kw is considered commercial. This is measured by the installation as opposed to the range of an individual boiler. An installation of two 50kw boilers which are connected to the same system is considered to be a commercial installation as the total amount of kW is higher than 70.
What are some critics' ideal boilers?
There are many ideal boilers for critics. Some ideal boilers for critics include the Buderus boilers, the ORLAN boilers, and lastly the Crown Boiler company boilers.
Is there any application of supercritical fluid extraction in refinery?
Supercritical fluid extraction is now used in laboratories.
Which factory of Alstom India has successfully manufacture its first high performance mill for pulverising coal for supercritical steam power plant of 660 MW?
Durgapur
When did gas insulated substation installed in India for first time?
the first GIS substation installed in India at pophali (koyana hydro project in Maharashtra in 1992.)
Why steam boilers are coil type boilers?
All boilers are not coil type think of the pork chop steam boilers AKA cast iron sectional
What are all the products made in bhel trichy?
Utility Boilers Industrial Boilers CFBC Boilers HRSG
What is the function of the Thermax company in India?
Thermax is a company based in India and Britain which offers boiler solutions and can also help with waste water. Historically Thermax is also a brand name for boilers.
What is marine boilers?
boilers which are used in ships called as marine boliers.
Where was India's computer installed and when?
indian statistics institute, calcutta, 1955
