Dry saturated steam at 17.5 bar enters the turbine of a steam power plant and expands tothe condenser pressure of 0.75 bar. Determine the Carnot and Rankine cycle efficiencies.Also find the work ratio of the Rankine cycle. [0.2381, 0.873; 0.2162, 0.9967]Steam enters the turbine of a steam power plant, operating on Rankine cycle, at 10 bar, 300°C.The condenser pressure is 0.1 bar. Steam leaving the turbine is 90% dry. Calculate theadiabatic efficiency of the turbine and also the cycle n, neglecting pump work. [0.89, 0.25]In a single-heater regenerative cycle shown in figure 1 below, the steam enters the turbine at30 bar, 400°C and the exhaust pressure is 0.1 bar. The feed water heater is a direct contacttype that operates at 5 bar. Draw a fully labelled T-S and h-S diagrams of this cycle; Determinethe efficiency and steam rate of the cycle.[34.18%; 1.18%; 3.46 Kg/kWh]TurbineBoilerОрenFWHCondenserPump IIPump IConsider a steam power plant operating on the ideal regenerative Rankine cycle with oneopen feedwater heater. Steam enters the turbine at 15 MPa and 600°C and is condensed inthe condenser at a pressure of 10 kPa. Some steam leaves the turbine at a pressure of 1.2MPa and enters the open feedwater heater. Determine the fraction of steam extracted fromthe turbine and the thermal efficiency of the cycle. [0.8041; 46.3%]A 40 mW steam plant working on the Rankine cycle operates between boiler pressure of 4MPa and condenser pressure of 10 KPa. The steam leaves the boiler and enters the steamturbine at 400°C. The isentropic n of the steam turbine is 85%. Determine (i) the cyclen (ii)the quality of steam from the turbine and (iii) the steam flow rate in kg per hour. Consider pumpwork. [29.9%; 0.88; 44.2 kg/s]

Given dataProperties of steam entering turbine17.5 barsaturated steamProperties of steam entering…

Dry saturated steam at 17.5 bar enters the turbine of a steam power plant and expands to the condenser pressure of 0.75 bar. Determine the Carnot and Rankine cycle efficiencies. Also find the work ratio of the Rankine cycle. [0.2381, 0.873; 0.2162, 0.9967]

Dry saturated steam at 17.5 bar enters the turbine of a steam power plant and expands to the condenser pressure of 0.75 bar. Determine the Carnot and Rankine cycle efficiencies. Also find the work ratio of the Rankine cycle. [0.2381, 0.873; 0.2162, 0.9967]

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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Steam enters the high-pressure turbine of an ideal reheat Rankine cycle at 10 MPa and 500°C. The low-pressure turbine inlet admits steam at 1 Mpa. Assume that the pump inlet is a saturated liquid at 10 kPa and that 80 MW of power is produced overall. 1. Report the overall thermal efficiency of the cycle as a percentage (number between 0 and 100) to one decimal place using rounding. 2. Report the mass flow rate, in kg/s, to one decimal place using rounding.
Problem 2 Consider a reheat Rankine cycle utilizing steam. Steam leaves the boiler and enters the turbine at 600 psia, 800 °F. After expansion in the turbine to 60 psia, the steam is reheated to 800 °F and then expanded in the low-pressure turbine to 1 psia. After presenting a schematic of the problem in addition to clearly labeled and explained T-s and h-s diagrams, you are asked to determine the following: (a) Pump work required per Ibm of working fluid. Quality of fluid at turbine inlet. (b) (d) (e) (f) Work output of turbine per Ibm of working fluid. Energy input to the boiler per Ibm of working fluid. Heat rejection by the condenser per Ibm of working fluid. Determine the cycle thermal efficiency.
2) A steam power plant operates according to the simple ideal Rankine cycle. The pressure limits of the cycle are 9 MPa and 10 kPa, and the flow of water eirculating in the cycle is 60 kg/s. It is required that the moisture content of the steam at the turbine outlet does not fall below 90 percent. Accordingly, calculate (a) the lowest possible turbine inlet temperature, (b) the heat supplied to the cycle, and (c) the thermal efficiency of the cycle by showing the cycle on a T-s diagram with saturated vapor and saturated liquid curves,.
High-P Low-P turbine turbine Reheater (4) Boiler P = Ps = Preheat Pump Condenser The following data was given for a steam power plant operating on the ideal reheat Rankine cycle. 3-4: Inlet steam at 17.5 MPa and 600 C 6-1: inlet steam at a pressure of 11.16 kPa at a wetness fraction of 01. At state 1, the specific volume is 0.00101 m/kg Find the specific entropy in kJ/kg at state 2 to 3 decimal places. Activate Windows
T B A D Consider the cycle in the diagram (very similar to the Rankine Cycle) using water as the working fluid. Process A-B: A saturated mixture of water is pumped from low pressure to a high pressure saturated liquid in an iso-entropic (and adiabatic) process. Process B-C: The high pressure saturated liquid enters a boiler where it is heated at constant pressure process by an external heat source to a super-heated vapor. Process C-D: The super-heated vapor goes through a turbine, generating power exiting as a saturated vapor. Assume an iso-entropic (and adiabatic) process and neglect kinetic energy and potential energy changes. Process D-A: The saturated vapor then enters a condenser where it is condensed at a constant pressure process back to its original state. The boiler operates at 10 MPa (points B & C) and the condenser operates at 100 kPa (points A & D). Assume a mass flow rate of 1 kg/s. a) Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy…
Problem 2: Consider the following Rankine cycle with reheat (notice the numbering here is different from the previous diagram). Steam enters the high pressure turbine at 14MPa and 600C, and is reheated at constant pressure to 600C. It exits the second, low pressure turbine at 10kPa with a quality of 89.4%. Given 2 1 3 4 P3 = 14MPa T3 = 600°C 5 T5 = 600°C Condenser High P. 6 Low P. PG = 10kPa x6 = 89.6% (i.e. moisture content Is limited to 10.4%) Find P4, nth Assumptions SS, Ake = Ape = 0 Ideal cycle (isentropic efficiency of turbine and pump are 100%, no heat transfer where unintended, no pressure drops due to friction) P₂ = P3, P4 = P5, P6 = P₁
High-P turbine Low-P turbine Reheater (4) Boiler P4 = P5 = Preheat Pump Condenser The following data was given for a steam power plant operating on the ideal reheat Rankine cycle. 3-4: Inlet steam at 17.5 MPa and 600 °C 6-1: inlet steam at a pressure of 11.16 kPa at a wetness fraction of 0.1. At state 1, the specific volume is 0.00101 m3/kg Find the temperature in degree C at state 4 to 2 deciamal places.
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.
A generator uses a gas turbine cycle. Air enters the compressor at a pressure of 1 bar and a temperature of 30°C with a compressor efficiency of 0.85. Hot gas exits the combustion chamber at a pressure of 9 bar and a temperature of 900°C. The power generated by the turbine is 2400 kW with a turbine efficiency of 0.82. a. Draw installation diagrams and T-s cycle process diagramd b. Determine the work of the compressor and turbine and the mass rate of the air requirement c. Cycle thermal efficiency (air: Cp=1,005 kJ/kg. K dan γ=1.4; Gas hot: cp=1,005 kJ/kg K and γ=1.4)
1. Determine the Rankine efficiency of a condensing steam turbine operating in a Rankine cycle as follows: Steam pressure - 200 psiaSteam temperature - 1000 FExhaust pressure - 2 in Hg absoluteSteam rate - 1.5 lb/kW-hr 2. If the no. 1 problem has a thermal efficiency of 30%, how many barrels of 30 °API fuel oil will be required to produce 1000 kW-hr of power. Neglect the pump work.
T B A D Consider the cycle in the diagram (very similar to the Rankine Cycle) using water as the working fluid. Process A-B: A saturated mixture of water is pumped from low pressure to a high pressure saturated liquid in an iso- entropic (and adiabatic) process. Process B-C: The high pressure saturated liquid enters a boiler where it is heated at constant pressure process by an external heat source to a super-heated vapor. Process C-D: The super-heated vapor goes through a turbine, generating power exiting as a saturated vapor. Assume an iso-entropic (and adiabatic) process and neglect kinetic energy and potential energy changes. Process D-A: The saturated vapor then enters a condenser where it is condensed at a constant pressure process back to its original state. The boiler operates at 8 MPa (points B & C) and the condenser operates at 200 kPa (points A & D). Assume a mass flow rate of 1 kg/s. Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and…
5. Consider a steam power plant operating on the ideal Rankine cycle. The steam enters the turbine at 5 MPa, 350 °C and is condensed in the condenser at a pressure of 15 kPa. Determine the thermal efficiency of the cycle if the steam were superheated to 750 °C. Draw the schematic and Ts diagram.