Question
In: Mechanical Engineering
The power-plant will have 380 MWe electric power. The proposed gas-vapor cycle is different from traditionally...
The power-plant will have 380 MWe electric power.
The proposed gas-vapor cycle is different from traditionally
used ones. It
consists of closed gas turbine cycle (instead of open gas turbine
cycle used
commonly). The working fluid is helium and the cycle consists of a
compressor, a
heater, a turbine and a cooler. The cooler acts as heat recovery
steam generator
(HRSG) for steam cycle. Other components of cycle are turbine
condenser and
pump. The condition at inlet to compressor is to be taken as 750
kPa, 60oC. The
compressor pressure ratio is 4.0 and the maximum turbine inlet
temperature is
900oC. Steam leaves the HRSG at 1 MPa and 300oC. The condenser
pressure is 10
kPa. Assume pressure loss across heater, HRSG, condenser and
connecting piping
to be negligible. Also, assume hundred percent efficiency for all
component.
Calculate the mass flow rate of helium and steam required to
provide the desired
power output, the cycle efficiency, and the cycle heat rate. Also
estimate the exergy
destruction for this cycle. The environmental conditions are 100
kPa and 30oC.
Estimate pinch-point temperature difference? Is this cycle
feasible?
Solutions
samet mamat answered 1 year agoRelated Solutions
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extracted and diverted to the open feedwater heater operating at 1
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A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam...
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one open feedwater heater. Steam enters the first turbine stage at
12 MPa, 560°C and expands to 1 MPa, where some of the steam is
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An electric utility is considering a new power plant in northern
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the plant would be legal; but it would cause some air pollution.
The company could spend an additional $40 million at Year 0 to
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where it is badly needed. Because the firm has received a permit,
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where it is badly needed. Because the firm has received a permit,
the plant would be legal; but it would cause some air pollution.
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