ii. III. iv. For uniformity purposes, assign STATE 1 at the inlet of a high-pressure turbine. The states must be arranged in a chronological order, Plot each cycle in a t-s diagram with the states consistent to the states assignment in the schematic diagram; Show a detailed solution of each problem. 2. An ideal reheat Rankine cycle with water as the working fluid operates the boiler at 10 MPa, the reheater at 2 MPa, and the condenser at 0.1 MPa. The temperature is 450 °C at the entrance of the high-pressure and low-pressure turbines. The mass flow rate through the cycle is 1.74 kg/s. Determine a) the rate of heat transfer in the reheater, and b) the cycle thermal efficiency.

ii. III. iv. For uniformity purposes, assign STATE 1 at the inlet of a high-pressure turbine. The states must be arranged in a chronological order, Plot each cycle in a t-s diagram with the states consistent to the states assignment in the schematic diagram; Show a detailed solution of each problem. 2. An ideal reheat Rankine cycle with water as the working fluid operates the boiler at 10 MPa, the reheater at 2 MPa, and the condenser at 0.1 MPa. The temperature is 450 °C at the entrance of the high-pressure and low-pressure turbines. The mass flow rate through the cycle is 1.74 kg/s. Determine a) the rate of heat transfer in the reheater, and b) the cycle thermal efficiency.

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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Draw a schematic diagram of each problem with labels of states of a substance; Assign STATE 1 at the inlet of a high-pressure turbine. The states must be arranged in a chronological order; Plot each cycle in a t-s diagram with thestates consistent to the states assignment in the schematic diagram; A reheat-regenerative Rankine cycle receives steam at 8.0 MPa, 300 0C and exhaust at 0.01 MPa. Steam is extracted at 2.0 MPa for CFWH and the remainder for reheating. The reheated steam enters the 2nd stage turbine at 1.5MPa and expands to 1.0 MPa where more steam is extracted for OFWH. The remainder expands to the condenser pressure of 0.01MPa. Feedwater from low pressure regenerative heater leaves the CFWH at 207 0C and mixes with the feedwater. Determine the percentages of the extracted steam and the cycle thermal efficiency.
Draw a schematic diagramof each problem with labels of states of a substance; For uniformity purposes, assign STATE 1 at the inlet of a high-pressure turbine. The states must be arranged in a chronological order; Plot each cycle in a t-s diagram with the states consistent to the states assignment in the schematic diagram; Consider a regenerative vapor power cycle with a single open feedwater heater. Steam enters the first turbine stage at 12MPa, 500 0C, and expands to 0.3MPawhere some steam is extracted and fed to the feedwater heater. The remainder expands through the second-stage turbine and exits at the condenser pressure of 0.01 MPa. Saturated liquid at 0.3 MPaleaves the open feedwater heater. If the net power output of the cycle is 100 MW,and the turbine stages and pumps are isentropic, determine (a) the thermal efficiency, and(b) the mass flow rate of steam entering the first turbine, in kg/h.
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i.Drawaschematic diagramof each problem with labels of states of a substance; ii.For uniformity purposes, assign STATE 1 at the inlet of ahigh-pressure turbine.The states must be arranged in a chronologicalorder; iii.Ploteach cycle in a t-s diagramwith the states consistentto the states assignment in the schematic diagram; iv.Show a detailed solution An ideal reheat Rankine cycle with water as the working fluid operates the boiler at 10MPa, the reheater at 2MPa, and the condenser at 0.1MPa. The temperature is 4500C at the entrance of the high-pressure and low-pressure turbines. The mass flow rate through the cycle is 1.74 kg/s. Determine a)the rate of heat transfer in the reheater, and b) thecyclethermal efficiency.
Specific Instruction: i.Drawaschematic diagramof each problem with labels of states of a substance;ii.For uniformity purposes, assign STATE 1 at the inlet of ahigh-pressure turbine.The states must be arranged in a chronologicalorder;iii.Ploteach cycle in a t-s diagramwith the states consistentto the states assignment in the schematic diagram;iv.Show a detailed solution 1.Consider a 200-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters the turbine at 8MPa and 400 0C and is cooled in the condenser at a pressure of 10 kPa. Determine (a) the quality of the steam at the turbine exit, and (b)themass flow rate of the steam.
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An ideal air-standard Brayton cycle operating at steady state produces 50 MW of power. Operating data at principal states in the cycle are given in the table below. The states are numbered as in the figure below.
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Figure 5.15 in the text gives a schematic of a Carnot cycle operating with a H2O liquid/vapor with a steady flow (constant mass flow rate) through each component. From the properties given below your cycle may or may not be a Carnot cycle. Kinetic energy and potential energy changes can be ignored in this problem. The cycle conditions are as follows: Process 4 – 1: constant pressure at 300 kPa from saturated liquid to saturated vapor Process 2 – 3: constant pressure at 30 kPa from x2 = 87.9% to x3 = 10.9% a) Determine the thermal efficiency using steam table data b) Compare the result of part a) with the Carnot efficiency using the boiler and condenser temperatures. c) State if the cycle is internally reversible, irreversible or impossible