80°C for reheat and main steam.

SCB supercritical boiler

38 related questions found

What is the largest boiler in the world?

In the center 460 MW plant It is the world’s largest CFB boiler and the world’s first once-through unit (OTU) supercritical CFB boiler. The Å agisza plant (Fig. 1) owned by PoÅ‚udniowy Koncern Energetyczny SA (PKE) is located in the Katowice region of southern Poland.

What is the maximum steam pressure?

The state-of-the-art today is the USC facility, using European reference conditions with a maximum efficiency of 46%.This type of plant will operate at maximum steam pressure 250″ 290 barthe outlet steam temperature of the boiler superheater is 600℃, and the reheat steam is 620℃.

What is the purpose of a deaerator?

Deaerator is Mechanical device for removing dissolved gases from boiler feed water. Outgassing protects the steam system from corrosive gases. It does this by reducing dissolved oxygen and carbon dioxide concentrations to levels where corrosion is minimized.

What conditions must a plant have to improve thermal efficiency?

Besides feed heating, what else does a plant need to increase thermal efficiency? Explanation: To obtain thermal cycling efficiency gains, in addition to feed heating, There should be multiple reheats.

What is a supercritical Rankine cycle?

supercritical rankine cycle Thermodynamic cycle of supercritical water reactor… Similar to a boiling water reactor, the steam will be supplied directly to the steam turbine and the feed water for the steam cycle will be supplied back to the core.

Which is a critical boiler?

One supercritical steam generator A boiler that operates at supercritical pressure and is often used to generate electricity. In contrast to subcritical boilers where bubbles may form, supercritical steam generators operate at pressures above critical pressure – 22 MPa (3,200 psi).

What is the efficiency of an ultra-supercritical boiler?

Ultra-supercritical steam conditions now use supercritical pressures up to 300 bar and steam and reheat steam temperatures of 600°C.This gives the net efficiency 46%.

Which of the following thermal power plants has the highest overall thermal efficiency?

Which of the following thermal power plants has the highest overall thermal efficiency? steam power plant.

What is supercritical temperature?

supercritical fluid of any substance at temperatures and pressures above their critical point, in which there are no distinct liquid and gas phases. Critical temperature The temperature above which no phase boundary exists for a given substance.

Which is the largest power plant in India?

Vindhyachal Thermal Power Station in Thinglauri District With an installed capacity of 4,760 MW, Madhya Pradesh is currently the largest thermal power plant in India. It is a coal-fired power plant owned and operated by NTPC.

Why should boilers use economizers?

Economizer is the equipment used Use the heat in the exhaust to heat the feedwater before exiting through the chimney. It improves the economy of the steam boiler. …it increases the steam lift capacity of the boiler as it shortens the time it takes to convert water to steam.

What is the basic principle of regeneration?

What is the basic principle of regeneration?Explanation: in The regenerated steam from the condenser is circulated through the turbine to increase the steam temperature before entering the boiler. Description: Feed water is preheated to reduce fuel consumption and improve efficiency.

Which of the following is not a type of jet condenser?

1. Which of the following is not a jet condenser? Description: Jet condensers are divided into cocurrent, countercurrent and jet condensers. Central flow condenser Not a jet condenser, but a surface condenser.

How is the performance of the cooling tower expressed?

How is the performance of the cooling tower expressed?Explanation: A method can be defined as The temperature difference between the water leaving the cooling tower and the ambient wet bulb temperature. If the method is low, the performance is good and vice versa.

Why are deaerators kept high?

Why are deaerators placed at high places?The deaerator is placed high Sufficient NPSHa (net positive suction head available) for boiler feed pumps – For the same reason, boiler feed pumps are usually located in the lower part of the ship.

How does a superheater work?

Superheater and Reheater Special Designed to increase the temperature of saturated steam and help control steam outlet temperature. They are simple single-phase heat exchangers with steam flowing inside and flue gas passing outside, usually in cross flow.

Do you need a deaerator?

Boiler deaerators are usually Used to remove oxygen and other gases from water into a boiler that produces steam. Degassers are useful because they remove gases that adhere to metal parts of the steam system and cause corrosion by forming oxides or rusting.

What is the maximum temperature of steam?

Usually at the critical point of the steam dome, the maximum temperature and pressure that steam can have is 375 degrees Celsius… Steam above this temperature is often called superheated steam… The temperature of superheated steam used in steam power plants can also be raised to 600 degrees with increasing pressure.

How much pressure can steam generate?

Steam pressure at inlet can be up to 3500 psig (241.32 bar (g)) As low as 0.5 psia (0.034 bar (a)) at the turbine outlet [4]. Steam turbines can use different gas, liquid and solid fuels. They have a long service life (over 50 years) if properly operated and maintained.