3. At a load of 43,000 KW in a steam turbine generating set, 3600 RPM, the following dataappear in the log sheet.Steam flow -190 Metric Tons/hourSteam pressure - 8.93 MPaaSteam temperature - 535CFeed-water temperature - 230 CFuel Flow:Bunker Oil -3.4 Metric Tons/hrHHV=10,000 Kcal/hrLocal coal -18 Metric Tons/hrHHV = 5350 Kcal/hrDetermine the overall boiler efficiency.h at 8.93 MPa and 535°C -3475.7 KJ/kghf at 230°C-990.12 KJ/kg

Answered: Image /qna-images/answer/c937b582-7aaf-4f4d-961e-49cb1c4162a8.jpg

Answered: 3. At a load of 43,000 KW in a steam…

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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1. Using the Steam Tables, determine the heat absorbed by the boiler (KW) and Wsf when subcooled water at pressure = 5 Mpaa (subcooled by 64 deg C measured at the boiler inlet), is superheated to 100 degrees SH at the same pressure. Flow rate is at 10 cubic meters per minute. Ans.: a) Qa = b)Wsf= Hint: Use v at compressed water temp. at boiler inlet to convert to mass flow rate. Process is isobaric (Constant Pressure, where Q=m x AH).
1- During a steam generator performance test, the following data were taken: Fuel data: Type=Coal Mass flow rate=2.5 kg/s High heat value=32.5 Mj/kg Steam data: Pressure=13 bar Dryness fraction=99.5% Mass flow rate=25 kg/s Feed water data: Saturated at 50 C° Calculate the steam generator efficiency.
Draw the schematic diagram of the problem; The steam used by a turbine is 5.50 kg/kw-hr at a pressure of 4.50 MPaa and a temperature of 373 degree Centigrade. The overall boiler effeciency is 85% with feedwater temperature at 165 degree Centigrade. a) How many kilogram of coal are required per kw-hr if calorific value of coal is 28,000 kJ/kg? b) If coal costs Php 440 per Metric Ton, what is the fuel cost per kw-hr? Copy the problem.
1. Using the Steam Tables, determine the heat absorbed by the boiler (KW) and Wsf when subcooled water at pressure = 5 Mpaa (subcooled by 64 deg C measured at the boiler inlet), is superheated to 100 degrees SH at the same pressure. Flow rate is at 10 cubic meters per minute. Ans.: a) Qa b)Wsf= Hint: Use v at compressed water temp. to convert to mass flow rate.
Please no written by hand solutions The following data referred to a 12-cylinder, single acting, two stroke marine diesel engine. Speed = 150rpm; cylinder diameter = 0.8m; Stroke of piston = 1.2m; Area of indicator diagram = 5.5x10-4m2, length of the indicator diagram = 0.06m; spring value = 147MPa/m. Find the net rate of work transfer from the gas to piston in KW.
01- Draw the wind turbine power curve characteristics and discuss the regions of the curve. What is the value of wind turbine power when the power coefficient (cp) =16/27 and wind power =100kW?.
3. A 4-stroke, 8-cylinder, petrol engine, has the following parameters at sea level; fue consumption = 0.75 Itr/min, engine speed = 50 r.p.s., Ap = 60 mm Hg, venturi diameter = 4 cm, atmospheric pressure = 1.03 kg/cm', C, 0.8, air and fuel densities are 1.15 kg/m' and 700 kg/m' respectively. Calculate: AF when the temperature decreases by 10%.
A diatomic gas engine contracts isothermally from V2 = 2.00 m³ and p2 = 172 kPa to a volume V₁ and pressure 574 kPa. The engine then follows an isobaric process to V2, then an isochoric process to the original pressure, p2. Calculate the engine's efficiency. [Hint: Start by drawing the engine cycle on a pV-diagram.] .1152
The following data refer to a 12-cylinder, single-acting, two-stroke marine diesel engine:Speed: 150 rpmCylinder diameter: 0.8mStroke of piston: 1.2 mArea of indicator diagram: 5.5x 10-4 m2Length of diagram: 0.06 mSpring value: 147 MPa per mFind the net rate of work transfer from the gas to the piston in kW.
HANDWRITTEN AND FINAL ANSWER MUST BE IN ENGLISH UNITS. Show solution.ANSWER iii. Consider an ideal gas with the following characteristics: R = 115 ft-lbf/lbm-R Cp = 0.25 + 0.00035T (BTU/lbm-R) i. Solve for the value of k at 1250 R. ii. Refer to the table shown below: SEE IMAGE iii. Solve the following unknown parameters for Carnot cycle: Volume at end of isothermal compression Heat added and Heat rejected Wnet Efficiency Mean effective pressure iv. Solve the following unknown parameters for Otto Cycle Mass Pressure and Temperature ateach corner Heat added and Heat rejected Wnet Efficiency Mean effective pressure Percentage clearance v. Solve the following unknown parameters for Diesel Cycle with 6% cut-off. Compression ratio Percentage clearance Heat added and Heat rejected Wnet Efficiency Mean effective pressure
1. Consider a 50 kW wind turbine, IC is $120,000, CF = 0.25, AOM is 0.01 * IC, FCR = 0.07. Retail rate of electricity is $0.11/kWh. Determine COE. 2. For a 1 MW wind turbine, IC = $1,600,000, FCR = 0.07, AEP = 3,000 MWh/year, LRC = $80,000/year, AOM = $0.008/kWh. Determine CF and COE. %3D
Below figure shows Ts diagram of an aircraft engine. Draw the engine diagram only. Answer the following: a) What is TIT and max temperature magnitudein this engine? b) What is the fuel to air ratio in main CC and AB. c) Guess the approximate pressure ratio of the compressor making suitable assumption/data. 06 2000 K 1200 K 03 ATO (combustion) 02 01 565 K Pa 04 5 959 K ATO (afterburning)

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