Question

In a steam power cycle shown in the figure, the pressure of the water vapor exiting from the boiler with 1 kg mass at 1 point is P1 = 4 MPa, while the temperature is T1 = 400 oC, the pressures at the inlet and outlet of the mixing chamber (K.O.) are P2 = P3 = P4 = 1 MPa. The temperature at the inlet of the low pressure turbine (A.B.T.) is measured as T4 = 240 oC and the pressure at the outlet is P5 = 10 kPa. The degree of dryness at point 6 is X6 = 0.0. The temperature values at the inlet and outlet of the feed water heater (B.S.I.) are T8 = 160 oC and T9 = 200 oC, and the efficiency of the pump (P), low pressure turbine and high pressure turbine (Y.B.T.) are P = 1.0; ABT = 0.9; YBT = 1.0. K.V. It is a throttling valve.
a) Show the cycle in diagram T-s and h-s
b) Find masses m1, m2, m3, m4 (kg).
c) Calculate the thermal efficiency of the cycle.

Kazan 1kg m3 m2 Y.B.T KV m 1 on B.S. 3 2 K.O. B 4 Yüzeyli Tip B.$.1 m4 A.B.T Zkv. Yogusturucu 5 my

Answer 1

T 4MB Tut (1-man LA m 2 I MPa hun li-m, med loupe 6 11-m) is the mail S S

Please give some positive rating.. I have less CF Score

Thank you so much
TES (-) m2 1 m1 YOT Xv. m3= 1- m - m2) K.O. BS e-my Yuzey Tip B51 m2 MA (1-m-ma) my Авт Xry Yopusturucu (l-m) my (i-m-ma) 4 MPa Mate-1 Pressure (P.) Temperature (t, 7. 400C Enthalpy thi = 3213.6 kilky Entercopy (S.) = 6.7690 Wilken Stak-2 Pressure (P) = IMPa de Espanu on in the vialve de jucenthalpice im natwie eſo, Enthalpy (hy) - Enthalpy/h, 1 • 3213.6 wil kg state-3 K Premure (3) IMPO. Wince the Egjestenicy of YB1 = 1.0 No Espanusion in YBT i Circentoopius Emhuropy wat otak 3 [$] · Entropy catubats i (S.) = 6."7690 Kiltig Las impa the Entropy of valuwalked vapoun 18g1 = 65863 us / kg u wince Sy) Sg wo, mlade 3 us Superheated viapower. Enthalpyl hs) = 2864.86 kilkg

istaky = 6. 88117 millega Pueuwe (Paul = 1 MPa. Temperdure (Tow) = 2400 wat 1MPa the datumshion Temp, Teat: 1979.90 vomid Sinice Tu Tuat estate-4 in Super heated vapeur Enthalpy (hul 2920.4 kilkg Enteropyls 1941- estale-5 Pressure (Ps) = 10 upa Elecenicy og ABT = 10 ello, Esupanuion in A37 is uacentropie che, Entropy want toute 5 (85) - Enturopy of wlake 4 (54) = 6.88 17 us| willig Laut Toufa the Enteropy of scuturated vapour Sy : 8,1502 w I liga Willage Snue (Sg> S5.) Semula Jo. estate-5 is dalwanted mistreme Kibale ded as be the quality cat este s Sss - Sq + Xş (Sg-sel 6.88/1: 0.6493 + x3 ( 3. So2 - 0.6 493) Xss Enthalpy of catwild liquid at lowa thel 191.83 Killing Enthalpy odatus.cuted vapour at Loupa hg): 2584.7 Wilkg Enthalpy cat utade si (hs) = het ses thg- hel 191.83 + 0.83 (2584.7-19183) and enturpy of 0.83 hess- hss 2177.91 us lleg.

Effecemnicy of ART Vent) =09 Ang hu hs -> 0.9 2920.4 - hs 2920.4-2177.91 hy-hiss hs = 2252. 159 «slleg estate 1-0102 x1033 milkg Predwells) = 10 Kia flake - csaturated liquid liel:00) Enthalpy wout what thel - 191.87 Wor/kg specifice volume (Vc) Stale- Precure Pop) = 4 MPa. Effecienicy of Pump (p) = 1.0 Enthalpy at estate 7 (hq) = het Vol Pq - PG) ha 191.89 +f1.0102x107(4000 – 10) hq = 191.87+ 4.030 + ha 195.9 wing stal- Polegowe 1P81,-4 MPa Temperature (Te) = 160°c wat 4Ma the satation temperature Tucut = 250.4C and Since Teat) To ado, estate & in Subcooled Liquid- Enthalwy cał ukule & The) - Enthalpy ugy Saturated liqund ha = 675.55 us lleg

Stika Prienuorellal: 4M for Temperature (tg) = 200°C wat 4Mva aturation temp Treat - 250.4-c che, abe-9.aubcooled biquid enthalpy at ghax g1 ha) = 'Em thalpy of watwaled boq-cel 2000 hey = 852.45 w ulky. Stak-G' Psleuwie (Pd) IMPA cusuring alonte to be excl. build 762.81 KB willeg Eniſalpyche's NOU we have Applying Energy balance to BSI mih, +li- mighe = ha {mıx 3213.6 3+ [ll- m.) X 645.55y = 852.45 3213-6 m, +675.55-675-55m, - 852.45 2538.05 m 852.45-675.55 m= 0.07 kg lly Applying Enougy balance to ko. (1-m; ma lhat me ha (1-mi) hu (1-0.07 - m2)62864.86) + m,13218.6) = (1-0.07) 12920.4) Ma: 0.148 kg

Mg = (1-m, m₂) my -(1-0.07-0.148) 0.782 kg m₂ = Now lly for the Yuzelli tip BI mulhy-ho') = (1-mul ha-ha) maa 11-004)(675.55-195.87) (2920.4 - 762.81) 0.21 kg. & Effeciency of Cyrcle Naucie Whet din Whet a { Wurline {Wpump - (1-miu Chi-hz) + 11-7,- multhy-hs) - ll- mitha-hel (1-mu (hi-the-hry the+(-m-ma) I hy-hr) = (1-0.09)(3213.6-2864.86-195.87€191.84) +(1-0.07-0.21) (2920.4-2252.19) Whet 80171 WI.. . (3213.6-852.45) 23GT.15 W dinput xth hy) Sjfeciency (Meqck) - 801.71 2361.15 : 0.3395 Mcycle = 33.95%