EML4550HW5ans

EML4550HW5ans - Assumptions: 1 Givens: P3 Pc Pc2 2 Pa Pa2 3...

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Assumptions: Givens: 1 P 3 P c P c2 Mechanical Efficiency = η mech .96 := 2 P a P a2 η gen .97 := Generator Efficiency = m dot6 m dot1 120 kg s 3 Condenser is isobaric Boiler Efficiency = η boiler .92 := 4 Boiler is isobaric 5 Turbine is isentropic 6 Turbine Properties known: Entering Turbine (1) Exiting Turbine line a Superheated steam Superheated steam MM 10 := m dot1 120 kg s := m dota 10 .5 MM + () kg s := m dota 15 kg s = p 1 110bar := t 1 823K := p a 20bar := p a 2MPa = S 1 6.6926 kJ kg K := S a 6.6926 kJ kg K := h 1 3488.1 kJ kg := h a 2983.11 kJ kg := Exiting Turbine Line b Exiting Turbine Line c p b 6bar := p b 0.6MPa = p c 1.5bar := p c 0.15MPa = S b 6.6926 kJ kg K := S c 6.6926 kJ kg K := h b 2727.7 kJ kg := h c 2489.5 kJ kg :=
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4th Line Exiting turbine to the condenser (2) p 2 .8bar := S 2 6.6926 kJ kg := h 2 2394.7 kJ kg := Line Exiting Condenser (3) Line after pump (4) Saturated liquid Saturated liquid p 3 .8bar := p 4 1.5bar := S 3 1.231 kJ kg K := S 4 1.4336 kJ kg K := h 3 391 kJ kg := h 4 467.11 kJ kg := Line Exiting Open Feedwater Reheater (5) Line a exiting closed Reheater (a2) Saturated liquid Saturated liquid p 5 6bar := p a2 20bar := S 5 1.9312 kJ kg K
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EML4550HW5ans - Assumptions: 1 Givens: P3 Pc Pc2 2 Pa Pa2 3...

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