The Steam Engine for a simple Rankine Cycle with super heat vapor steam power plant, drives 150 kW generator of 90% electrical efficiency. Steam rate, 6.7 kg per bhp-hr; steam pressure, 1,034.6 kPag, 55.6°C superheat; exhaust to condenser at 15.2 cm Hg abs. No feedwater heating. Motor driven boiler feed-pump. Other data are as follows: Enthalpy of steam at 1,034.6 kPag & 55.6°C sh = 2,919 kJ/kg; Enthalpy of steam at 15.2 cm Hg abs. (after isentropic expansion work) = 2,252 kJ/kg; Enthalpy of Condensate at 15.2 cm Hg abs (hf) = 252.8 kJ/kg; and Specific Volume of Condensate = 0.001019 m3/kg.Determine the unitary Feedwater pump work, in kJ/kg. Determine the Ranking Cycle Efficiency in %.Determine the Brake Thermal Efficiency of the cycle in %. Determine the Combined thermal and electrical efficiency in %.
The Steam Engine for a simple Rankine Cycle with super heat vapor steam power plant, drives 150 kW generator of 90% electrical efficiency. Steam rate, 6.7 kg per bhp-hr; steam pressure, 1,034.6 kPag, 55.6°C superheat; exhaust to condenser at 15.2 cm Hg abs. No feedwater heating. Motor driven boiler feed-pump. Other data are as follows: Enthalpy of steam at 1,034.6 kPag & 55.6°C sh = 2,919 kJ/kg; Enthalpy of steam at 15.2 cm Hg abs. (after isentropic expansion work) = 2,252 kJ/kg; Enthalpy of Condensate at 15.2 cm Hg abs (hf) = 252.8 kJ/kg; and Specific Volume of Condensate = 0.001019 m3/kg.Determine the unitary Feedwater pump work, in kJ/kg. Determine the Ranking Cycle Efficiency in %.Determine the Brake Thermal Efficiency of the cycle in %. Determine the Combined thermal and electrical efficiency in %.
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