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SELF ASSESSMENT EXERCISE No.2 A back pressure steam cycle works as follows. The boiler produces 8 kg/s of steam at 40 bar and 500oC. This is expanded to 2 bar with an isentropic efficiency of 0.88. The pump is supplied with feed water at 0.5 bar and 30oC and delivers it to the boiler at 31oC and 40 bar. Calculate the net power output of the cycle.

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Calculate the final pressure of the mixture. 103. A closed system consisting of 2 kg of a gas undergoes a process during which the relationship between pressure and specific volume is PV1.3 = C. The process begins with P1 = 1 bar, 1 = 0.5 m3/kg and ends with P2 = 0.25 bar.

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The water leaves the boiler tube at 50 bar and 700 oK at velocity of 100 m/s. Calculate the inlet velocity(m/sec) Answer: C A. 1.56 B. 2.12 C. 1.672 D. 3.230 109. Water substance at 70 bar and 65 oC enters a boiler tube of constant inside diameter of 25 mm. The water leaves the boiler tube at 50 bar and 700 oK at velocity of 100 m/s. Calculate

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steam calculation in boiler | Steam Boiler In India. On heating water or converting water to steam, these dissolved solids do not evaporate and gets separated from water or steam and settled at the bottom of the shell.Boiler Calculations – KTH2003-10-30 · 1 Steam/water diagrams used in boiler calculations Temperature-heat (T-Q) diagram The T-Q diagram is a useful tool for designing heat

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steam flow rate through the boiler and turbine is 642 kg/s. Steam leaves the boiler as superheated steam at 15 MPa and 560oC, after entering the boiler as saturated water at a pressure of 15 MPa. The boiler fuel is bituminous coal which is burned at a rate of 47.5 kg/s. Calculate the boiler efficiency and the overall plant efficiency. 1.

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0.2 0.18 376.5 25 0 20 40 Time (s) Q by Output FC 2 1 Q(pu) Delta (Rad) 0.3 0.28 The Omega by Output FC 377 Omega (Rad/s) The Delta by Output FC 0.205 output FC 0.2 0 Time (s) Figure 3. The Performance of δ 0 0 20 Time (s) output FC no control output C 384 382 0.2 0.195 0.19 380 0 378 20 Figure 4. The Performance of 0.4 25 ω Figure 3 and

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If 2 kg/s of geothermal water is available at 95°C, what is the maximum power output of this cycle for R-134a as the working fluid? (hint: split the heat exchanger C.V. into two so the pinch point with ∆T = 0, T = 85°C appears) 2 kg/s of water is available at 95 oC for the boiler. The restrictive factor is the boiling temperature of 85° C.

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35.3 MJ kg kg 50.2 34.1 34.6 36.7 36.7 38.2 39.1 41.7 40.2 42.3 9126 kcal 8433 kcal MJ MJ MJ MJ MJ MJ MJ MJ MJ MJ 11992 8146 8266 8767 adopted the steam condition of 316 kg/cm2g (31.0 MPa) x 566oC/566oC. In 1993, Chubu’s Hekinan No. 3 plant (700 Boiler water circulation pump Hot blast generator Waste heat boiler (Gas cooler)

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