# King Fahd University of Petroleum and Minerals Mechanical Engineering Department ME 204: Thermodynam

King Fahd University of Petroleum and Minerals Mechanical Engineering Department ME 204: Thermodynamics-II (131), Course Project (5%) Due date Dec. 22, 2013, 4 pm, each day delay, -1% point Simple Actual Rankine Cycle for with one feedwater and no re-heater. Hints: solve examples 10.2 (An actual Steam Power Cycle) and 10.5 (The ideal regenerative Rankine Cycle) and problem 10-91(7th edition) using EES software first as a practice. Also, you can check EES software, under the menu barExamples getting started 1-Steam cycle with diagram window input; 2-properties and the parametric table. Document Preview:

King Fahd University of Petroleum and Minerals Mechanical Engineering Department ME 204: Thermodynamics-II (131), Course Project (5%) Due date Dec. 22, 2013, 4 pm, each day delay, -1% point Simple Actual Rankine Cycle for with one feedwater and no re-heater. Hints: solve examples 10.2 (An actual Steam Power Cycle) and 10.5 (The ideal regenerative Rankine Cycle) and problem 10-91(7th edition) using EES software first as a practice. Also, you can check EES software, under the menu barExamples getting started 1-Steam cycle with diagram window input; 2-properties and the parametric table. Note: this project is for actual cycle, not ideal. The effect of locating of the open feedwater heater (one only) on the thermal efficiency of the non-ideal (actual) cycle of a steam power plant utilizing the Rankine cycle is to be investigated. The plant produces 120 MW of power output. Steam leaves the steam generator (boiler) at 12 MPa, 500째C, and the cycle has a condenser pressure of 20 kPa. The isentropic efficiencies of the turbine and pumps are 85%. Neglect the pressure losses through piping and assume adiabatic turbine, boiler, condenser, and pumps. The steam leaves the feedwater heater and the condenser as saturated liquid. 1. Determine the thermal efficiency for the case of one feedwater heater operating at 2.0 MPa. 2. Plot the influence of the feedwater heater pressure (in terms of rise of feedwater enthalpy divided by the maximum rise of feedwater enthalpy (h4-h2)/hmax)) on the cycle efficiency. Rise feedwater enthalpy= h4-h2 as in example 10-5; and the maximum rise of feedwater enthalpy= enthalpy at boiler inlet pressure and saturated liquid (x=0). Investigate the intermediate pressure at which the system will give you optimum performance for one feedwater heater. That is, the required plot is: y-axis is efficiency and x-axis is enthalpy ratio (h4-h2)/hmax) where this enthalpy ratio changing with pressure (you need to vary the feadwater heater pressure). You may create a…

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