The net power output of the steam cycle is 40 MW. If the pressure bounds on the cycle are 5 MPa and 300 kPa, and the steam enters the turbine at 450°C and exits the condenser at 100°C, what is the mass flow rate of the steam? Assume that both the turbine and pump operate isentropically

Refrigeration and Air Conditioning Technology (MindTap Course List)
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Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
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Chapter36: Refrigeration Applied To Air-conditioning
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While steam power cycles provide much of the electricity that powers the United States, not all the
thermal energy used to generate the steam comes from burning fossil fuels. Below is a high-level
schematic of a concentrated solar power (CSP) plant that uses a sodium-/potassium-nitrate molten salt
to absorb solar thermal energy which is then transferred to steam to run a superheat Rankine cycle.
Parabolic mirrors (receivers) concentrate solar energy onto pipes carrying the molten salt. As the molten
salt flows through these tubes, it absorbs the reflected solar energy and eventually transfers this energy
to steam in a heat exchanger (boiler). For your ensuing analysis, you may assume that the boiler and
condenser operate isobarically.
Molten salt
or oil
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Condenser
Warm water
Feedwater pump
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Makeup water
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The net power output of the steam cycle is 40 MW. If the pressure bounds on the cycle are 5 MPa
and 300 kPa, and the steam enters the turbine at 450°C and exits the condenser at 100°C, what is
the mass flow rate of the steam? Assume that both the turbine and pump operate isentropically
Transcribed Image Text:While steam power cycles provide much of the electricity that powers the United States, not all the thermal energy used to generate the steam comes from burning fossil fuels. Below is a high-level schematic of a concentrated solar power (CSP) plant that uses a sodium-/potassium-nitrate molten salt to absorb solar thermal energy which is then transferred to steam to run a superheat Rankine cycle. Parabolic mirrors (receivers) concentrate solar energy onto pipes carrying the molten salt. As the molten salt flows through these tubes, it absorbs the reflected solar energy and eventually transfers this energy to steam in a heat exchanger (boiler). For your ensuing analysis, you may assume that the boiler and condenser operate isobarically. Molten salt or oil Receiver Pump wwwwww wimm Turbine Heat exchanger Electric generator Condenser Warm water Feedwater pump Pump Makeup water Cooling tower \/\/I\/10 Viviv j "i Cooled water The net power output of the steam cycle is 40 MW. If the pressure bounds on the cycle are 5 MPa and 300 kPa, and the steam enters the turbine at 450°C and exits the condenser at 100°C, what is the mass flow rate of the steam? Assume that both the turbine and pump operate isentropically
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