Q2] (20 Marks)A steam turbine with one open feed water heater (OFWH) as shown in the following figure.In terms of enthalpies and y determine:1- Work of HPT 2- Work of LPT 3- Work at Pump1 4- Work at Pump2 5-The heat addedat the boiler 6- The quantity (y) in terms of enthalpies 7-Heat extracted from condenser5Boiler2岁3OFWH9Pump2HPTLPT8 Pump1OCondenser

The work done by the High Pressure Turbine (HPT) is the difference in enthalpy between the inlet and…

Answered: Q2] (20 Marks) A steam turbine with one…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Referring to the reversible heat pump cycle shown in the figure, p1 = 14.7 Ibf/in?, p4 = 27.8 lbf/in?, v1 = 12.6 ft³/Ib, v4 = 8.0 ft³/lb, and the gas is air obeying the ideal gas model. P4 pi TH V4 VI Determine TH, in °R, and the coefficient of performance. Step 1 Determine TH, in °R. TH = °R Save for Later Attempts: 0 of 1 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.
3. A simple steam power plant illustrated below uses 20 kg/s of steam. Find: a) the boiler heat transfer rate; b) the turbine power output; c) the condenser duty; d) the pump power required. What is the ratio of net power out to heat in (the thermal efficiency)? The turbine and the pump are adiabatic 2 Boiler Pump 2 3 |3|4 Stream T(°C) P(MPa) 40 40 Turbine 600 x = 1 Condenser 0.01 10 10 0.01 A
Superheated steam at 18 MPa, 560 °C enters the steam turbine. The pressure at the exit of the turbine is 0.06 MPa and saturated liquid water leaves the condenser at 0.06 MPa. Pressure is increased to 18 MPa again after the pump. Find: (a) Sketch the process on a T-s diagram. (b) The net work per unit of steam flow in kJ/kg. (c) Heat transfer to steam passing through the boiler, in kJ/kg.
The working gas of a thermodynamic cycle is air. The gas originally starts at 100kPa, 1m³ and 27°C First, the pressure of the gas is doubled keeping the volume fixed. Second, the volume of the gas is doubled at constant pressure. Third, the gas undergoes an adiabatic expansion. Fourth, the gas undergoes an isothermal contraction back to its original state a) Make a table of the pressure, volume, and temperature at the start of each process. b) Make a table of the change in internal energy, heat flow, work done, change in enthalpy and change in entropy during each leg of the cycle. ● ● c) Draw P-v and T-s diagrams, indicating P, V & T at the start of each process & AU, Q, W, AH & AS for each leg. d) Calculate the thermal efficiency of the cycle.
Please help me out. Thermodynamics. Thank you.
B-D please or as much as you can do
a. Sketch the process on a P-V diagram b. Determine the rate of heat transfer from Boiler ( Qcv/m 1-2, in KJ/kg) c. Determine the rate of heat transfer from condenser ( Qcv/m 3-4, in KJ/Kg) d. Using the Clausius inequality to determine if the cycle is internally reversible, irreversible, or impossible. e. Determine the thermal efficiency of power cycle f. Determine the maximum thermal efficiency of power cycle ( Carnot Efficiency) g. Due to part (e & g) this cycle is___________ ? - internally reversible -internally irreversible -impossible
In a heat engine, 3.00 mol of a monatomic ideal gas, initially at 4.00 atm of pressure, undergoes an isothermal expansion, increasing its volume by a factor 9.50 at a constant temperature of 650.0 K. The gas is then compressed at a constant pressure to its original volume. Finally, the pressure is increased at constant volume back to the original pressure. a) Draw a PV diagram to illustrate the cycle for this engine. Label he axes with numerical values. b) find the heat flow into or out the gas during each step. c) Find the entropy change of the gas during the isothermal step. d) What is the entropy change of the gas for a complete cycle? Is it equal in magnitdre to the entropy change of the environment per cycle? Explain.
3. A steam power plant has an average monthly net power delivery of 740 MW over the course of a year. This power delivery is accomplished by burning coal in the boiler. The coal has a heating value of 9150 Btu/lbm. The cost of the coal is $14.20/ton. The overall thermal efficiency of the plant is, nth Wnet Qboiler 0.26 = 26% Determine the annual cost of the coal required to deliver the given average monthly power.
P (kPa) V (m³) A thermodynamic cycle consisting of three processes is shown above: Process 1 to 2: Adiabatic expansion with pV" = constant (n = 1.4). Process 2 to 3: Constant volume, V = 1 m³, U3- U2 = 52.2 kJ Process 3 to 1: Constant pressure, p = 5 bar, W31 = -100 kJ %3D Part a.) Label the P-V diagram with all pressures and volumes. Part b.) Make a table of known values. Q (in) kJ w (out) kJ AU kJ Process 1-2 2-3 3-1 Cycle (Total) Part c.) Is this a refrigeration or power cycle?
The following data for the R-12 refrigeration system as shown are as follows: Evaporator 1 0 OC 30 TOR Evaporator 2 -10OC 20 TOR Evaporator 3 -20OC 10 TOR Condenser 20OC Assume simple saturation and isentropic compression and determine the following: a) Draw the h-s diagram b) The refrigerant flow in each evaporator c) Total work of compression, WC in kW d) Heat rejected in the condenser, QR in kj/min e) Coefficient of performance
A power plant operates in an idealized Rankine cycle, using water as the working fluid (Figure 3). The steam at the exit of the boiler has a pressure of 6 MPa and temperature of 600 °C (point 1). The water at the exit of the condenser has a pressure of 15 kPa (point 3). The condenser employs a nearby river as the cooling source, which can be regarded to have a constant temperature of 25 °C. The mass flow rate of the steam is 80 kg/s. The hot reservoir has a temperature of 1400 K. Regard water as an incompressible liquid. During pumping, the density of water remains unchanged as Point 3 in Figure 3. Qin Boiler i wwwwww Pump Turbine Wp 3 Figure 3 W₁ Cooling water Condenser

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