How does a HRSG boiler work?
An HRSG is a kind of heat exchanger that recovers heat from the exhaust gases of a gas turbine to an extreme degree. The heat is recovered in the form of steam which is served as the power source of a power-generating steam turbine.
What is the function of HRSG in combined cycle power plant?
The HRSG is a key component of a combined cycle power plant. Its role is to convert as much of the heat as possible from the exhaust gas of the gas turbine into steam for a steam turbine.
What is harp in HRSG?
INCREASE PLANT EFFICIENCY — With HP Economizer Replacement (HARPS), redesigned finned tubes assist in HRSG steam production, plant economy, and overall increased plant operation.
What is pinch point temperature?
The pinch occurs where the heat transferred is zero, that is at interval number 4, interval temperature 90 °C. This is equivalent to 100°C in the hot stream or 80°C in the cold stream.
What is CPC and CPH?
Cph = specific heat capacity of hot fluid. mc = mass flow rate of cold fluid. Cpc= specific heat capacity of cold fluid. Hot fluid. Cold fluid.
What is aux boiler?
Auxiliary boiler means any fuel-fired combustion equipment designed primarily to produce steam for uses other than propulsion, including, but not limited to, heating of residual fuel and liquid cargo, heating of water for crew and passengers, powering steam turbine discharge pumps, freshwater generation, and space …
What is pinch temperature?
How do you calculate fluid temperature?
Calculate the final temperature of the water mixture using the equation T(final) = (m1_T1 + m2_T2) / (m1 + m2), where m1 and m2 are the weights of the water in the first and second containers, T1 is the temperature of the water in the first container and T2 is the temperature of the water in the second container.
What is main and auxiliary boiler?
Auxiliary boiler means, for purposes of Part 217,a boiler that is operated only when the main boiler or boilers at a source are not in service and is used either to maintain building heat or to assist in the startup of the main boiler or boilers.
What is inlet and outlet temperature?
An inlet air temperature of 130°C and 65°C as the outlet air temperature maintained high survival of the bacteria without sacrificing low moisture content. Inlet air temperature, previously considered to have no significant effect, was shown to play an important role in the survival of bacteria during spray drying.
What is an HRSG and how it works?
An HRSG is a kind of heat exchanger that recovers heat from the exhaust gases of a gas turbine to an extreme degree. The heat is recovered in the form of steam which is served as the power source of a power-generating steam turbine. For the heat-transfer tubes of an HRSG, finned tubes with excellent heat-transfer performance are employed.
What is a heat recovery steam generator HRSG?
HRSGs have some things in common with conventional boilers and other heat exchangers and many things that are unique to themselves. Heat recovery steam generators (HRSGs) are very popular. They are often combined with a gas turbine or diesel generator, and produce additional electricity with the steam.
What is a HRSG Heat exchanger?
As its name suggests, HRSG is a heat exchanger that ‘recovers’ the heat that is then used to generate steam. This heat is recovered from those flue gases that are a result of the burning of the fuels. HRSG can be used in many different ways, such as after Gas Turbines.
What is the flue gas exit temperature of HRSG?
The flue gas exit temperature from the HRSG is held above 100°C if it is necessary to prevent condensation, although lower temperatures are commonly used with suitable materials in order to maximize heat recovery. Figure 3.17. Heat transfer in HRSG.