The answers should be that in the below of question. I need complete answers. St

Question

The answers should be that in the below of question. I need complete answers.

Steam is supplied, dry saturated at 40 bar to a turbine and the condenser pressure is 0.035 bar. If the plant operates on the Rankine cycle, calculate, per kg of steam : the work output neglecting the feed pump work; the work required for the feed pump; the heat transferred to the condenser cooling water, and the amount of cooling water required through the condenser if the temperature rise of the water is assumed to be 5 middot 5 K; the heat supplied; the Rankine efficiency; the specific steam consumption. For the same steam conditions calculate the efficiency and the specific steam consumption for a Carnot cycle operating with wet steam. (982 middot 4 kJ; 4 kJ: 1706 middot 6 kJ; 74 middot 1 kg; 2685 kJ; 36 middot 6%; 3 middot 66 kg/kW h; 43%; 4 middot 88 kg/kW h)

Explanation / Answer

Refer http://www.waterproperties.eu for data and interpolation P1 = 40 bar x1 = 1 h1 = 2799.42 kJ/kg s1 = 6.067 kJ/kgK T1 = 250.33 celcsius P2 = 0.035 bar s2 =s1 = 6.067 kJ/kgK h2 = 1813.73 kJ/kg (Isentropic expansion, ideal) P3 = 0.035 bar x3 =0 h3 = 111.84 kJ/kg s3 = 0.390661 kJ/kgK P4 = 40 bar s4 =s3 = 0.390661 kJ/kgK h4 = 115.85 kJ/kg ans 1) W(turb) = 2799.42 - 1813.73 = 985.69 kJ/kg 2) W(pump) = 115.85 - 111.84 = 4.01 kJ/kg 3) Q(cond) = 1813.73 - 111.84 = 1701.89 kJ/kg 1701.89 = m*4.186*5.5 m = 73.92129 kg/kg of steam 4) Q(boiler) = 2799.42 - 115.85 = 2683.57 kJ/kg 5) Eff = (985.69-4.01)/2683.57 = 0.3658112 6) SSC = 3600/(985.69-4.01) = 3.6671 kg/kWhr Cold reservoir temp = 26.69 celsis = 299.69 K Carnot ef = 1-(299.69/523.33) = 0.4273403 W(carnot) = Q*Eff carnot = 2683.57*0.42734 = 1146.796 kJ/kg SSC = 3600/(1146.796-4.01) = 3.15 kg/kWhr

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