What is HRSG in combined cycle?
A heat recovery steam generator (HRSG) is one of the major pieces of equipment in a gas turbine combined cycle power plant that boasts a high thermal efficiency and produces minimal CO2 emissions. An HRSG is a kind of heat exchanger that recovers heat from the exhaust gases of a gas turbine to an extreme degree.
How does a HRSG gas plant work?
A HRSG generates steam by capturing heat from the turbine exhaust. These boilers are also known as heat recovery steam generators. High-pressure steam from these boilers can be used to generate additional electric power with steam turbines, a configuration called a combined cycle.
Which HRSG boiler is more compact in structure and used in smaller plants?
vertical boiler
The vertical boiler is more compact in structure and can be fit in smaller plants and even indoor facilities. The horizontal boiler is used mainly in larger plants.
Where is HRSG used?
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 is pinch point in HRSG?
Pinch point is the difference between the gas temperature leaving the evaporator and saturation temperature=Tg3-ts. Fig 1: HRSG temperature profiles. Approach point is the difference between saturation temperature and feed water temperature entering the evaporator= ts -tw2.
Why is Ccpp needed?
The CCPP electrical system provides both the power supply to the auxiliary equipment of the power plant and the export of the generated power to remote consumers. Combined cycle plants use natural gas as their primary fuel, although high quality diesel and other fuels are used in many cases.
What is a good capacity factor?
The Capacity Factor A plant with a capacity factor of 100% means it’s producing power all of the time. Nuclear has the highest capacity factor of any other energy source—producing reliable, carbon-free power more than 92% of the time in 2016.