What is a once-through steam generator?

What is a once-through steam generator?

The OTSG is a vertical shell counterflow straight-tube heat exchanger design which directly generates superheated steam as the feedwater flows through the steam generator in a single pass. BWXT is the exclusive designer and manufacturer of OTSGs for the nuclear industry.

Which of the following are Drumless once-through steam generators?

4. Which of the following are drumless once-through steam generators? Clarification: Supercritical steam generators are drumless once-through steam generators while the subcritical steam generators are the water-tube drum type ones.

What is steam to steam generators and their uses?

Steam-to-steam generators produce low-pressure saturated steam for domestic and other services. They are used in conjunction with watertube boilers to provide a secondary steam circuit which avoids any possible contamination of the primary-circuit feedwater.

How does heat recovery steam generator work?

A heat recovery steam generator (HRSG) is an energy recovery heat exchanger that recovers heat from a hot gas stream, such as a combustion turbine or other waste gas stream. It produces steam that can be used in a process (cogeneration) or used to drive a steam turbine (combined cycle).

What does Otsg mean?

OTSG

What is the difference between steam boiler and steam generator?

Steam generators are ideal for on-demand situations. They are smaller and easier to start up compared to steam boilers and, thus, may be used as auxiliary boilers. Generators usually do not have the same maximum capacity as fuel fired boilers, so they are best for applications that require point of use dry steam.

Which of the following is not a steam generator accessory?

2. Which of the following is NOT a boiler accessory? Explanation: The correct answer is mud hole (or sight hole). Feed pump, steam trap, steam separator are all boiler accessories whereas a mud hole is a boiler mounting.

Which boiler is Drumless?

A drumless natural circulation boiler system has a furnace enclosure with wall tubes and upper and lower headers connected to respective upper and lower ends of the wall tubes. At least one tangential steam/water separator is connected to a plurality of riser tubes that are also connected to the upper headers.

What is the main function of a steam?

Answer: The main function of steam is to transport materials to all parts of the plant.

What is the function of steam?

Steam’s capacity to transfer heat is also used in the home: for cooking vegetables, steam cleaning of fabric, carpets and flooring, and for heating buildings. In each case, water is heated in a boiler, and the steam carries the energy to a target object.

What is a once through steam generator ( OTSG )?

Once-through steam generator (OTSG) A specialized type of HRSG without boiler drums is the once-through steam generator. In this design, the inlet feedwater follows a continuous path without segmented sections for economizers, evaporators, and superheaters.

What kind of boiler is a steam generator?

Steam generator (boiler) A steam generator is a form of low water-content boiler, similar to a flash steam boiler. The usual construction is as a spiral coil of water-tube, arranged as a single, or monotube, coil. Circulation is once-through and pumped under pressure, as a forced-circulation boiler.

What do you mean by supercritical steam generator?

Unsourced material may be challenged and removed. A supercritical steam generator is a type of boiler that operates at supercritical pressure, frequently used in the production of electric power .

Which is steam generator directly generates superheated steam?

The OTSG is a vertical shell counterflow straight-tube heat exchanger design which directly generates superheated steam as the feedwater flows through the steam generator in a single pass. BWXT is the exclusive designer and manufacturer of OTSGs for the nuclear industry.