9. A steam generating plant consisting of a boiler, an economizer and super heater generates superheated steam at a rate of 50 metric tons per hour. The feedwater enters the boiler at 10.0 mpa and 100°C compressed liquid. The steam leaves the superheater at 10.0 pa pressure with a temperature of 1000°C. Calculate the volume of fuel to be burned in liters per hour for a boiler efficiency of 80%. The heating value of fuel is 10,000 Kcal/kg. a) 7,344 liters/hr b.) 6,325 liters/hr c.) 5,832 liters/hr d.) 8,028 liters/hr

9. A steam generating plant consisting of a boiler, an economizer and super heater generates superheated steam at a rate of 50 metric tons per hour. The feedwater enters the boiler at 10.0 mpa and 100°C compressed liquid. The steam leaves the superheater at 10.0 pa pressure with a temperature of 1000°C. Calculate the volume of fuel to be burned in liters per hour for a boiler efficiency of 80%. The heating value of fuel is 10,000 Kcal/kg. a) 7,344 liters/hr b.) 6,325 liters/hr c.) 5,832 liters/hr d.) 8,028 liters/hr

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

See similar textbooks

Similar questions

Biomass is used as fuel to power the following cogeneration plant on a school. The turbine drives an electric generator to produce electricity, and part of the steam is extracted to provide heating to campus buildings. The boiler provides 106 kg/h of steam at 6 MPa, 520 °C, of which 4x105 kg/h is extracted between the first and second turbine stages at 1 MPa and diverted to the building heating load. Condensate returns from the building heating load at 0.95 MPa, 115 °C, and it is mixed with liquid exiting the lower pressure pump at 0.95 MPa. The entire flow is then pumped to the boiler pressure. Saturated liquid at 6 kPa leaves the condenser. The turbine stages and the pumps operate with isentropic efficiencies of 89 and 85%, respectively. The efficiency of the electric generator is 93% for converting turbine mechanical power into electricity. Calculate the heating load in kJ/h. Calculate the electric power generated in MWe.
A steam power plant operates between a boiler pressure of 52 bar and a condenser pressure of 0.045 bar. Calculate for these limits the cycle the work ratio for a Carnot cycle using wet steam.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. The gas-turbine cycle of a combined gas–steam power plant has a pressure ratio of 8. Air enters the compressor at 290 K and the turbine at 1400 K. The combustion gases leaving the gas turbine are used to heat the steam at 15 MPa to 450°C in a heat exchanger. The combustion gases leave the heat exchanger at 247°C. Steam expands in a high-pressure turbine to a pressure of 3 MPa and is reheated in the combustion chamber to 500°C before it expands in a low-pressure turbine to 10 kPa. The mass flow rate of steam is 12 kg/s. Assume isentropic efficiencies of 100 percent for the pump, 85 percent for the compressor, and 90 percent for the gas and steam turbines. A.) Determine the mass flow rate of air in the gas-turbine cycle. Use steam tables and the table containing the ideal-gas properties of air. The mass flow rate of air in the gas-turbine cycle is ___?___kg/s…
Q2. A cogeneration steam power plant has been modified with introducing an open feedwater heater as shown in figure below. Working pressure of the plant is between 6 MPa and 10 kPa for the boiler pressure and condensate pressure. The steam is extracted at 0.5 MPa for process heater and feedwater heater. The superheated srteam enters the turbine at 500°C at a rate of 25 kg/s and expands to the condensate pressure of 0.5 MPa. There is 60 percent of the steam is extracted from the turbine at the pressure of 0.5 MPa, and the remainder expands to a pressure of 10 kPa. Part of the extracted steam is used to heat feedwater and the rest of the extracted steam is used for process heating. The steam leaves the process heater as a saturated liquid at 0.5 MPa. It is subsequently mixed with the feedwater leaving the feedwater heater, and the mixture is pumped to the boiler pressure. The steam in the condenser is cooled and condensed by the cooling water from a nearby river, which enters the…
A boiler furnace releases 10 400 kj of heat for each kg of fuel burned and produces dry staturated steam at 14000 kpa from feedwater at 200 degrees celcius . How many kg of steam will be produced for each kg of fuel burned if the boiler had an efficiency of 66% ? .
Steam is supplied to a two-stage turbine at 40 bar and 350°C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 350°C and expanded through the second-stage turbine. The condenser pressure is 0.035 bar. Calculate the work output and the heat supplied per kilogram of steam for the plant, assuming ideal processes and neglecting the feed-pump term. Calculate also the specific steam consumption and the cycle efficiency
derive a symbolic expression for the maximum net conversion efficiency of the cycle,ηcycle, the ratio of the net amount of work produced compared to the external (not from heatregeneration) heat absorbed. You may treat the working fluid as an ideal gas. Your expressionmay include Tc, Th, and any defined constants.
A power station consists of a four-unit coal fired power station, having a combined capacity of 2,880 MW. The current efficiency of each unit is around 37.7%. You are asked to improve the thermal efficiency of each unit by lowering the condenser pressure. To simplify this task, assume that each unit operates on a simple ideal Rankine cycle. If the superheated vapour enters the turbine at 10 MPa and 500 ֯C and is cooled in the condenser at a lower pressure 10 kPa, determine the quality of the steam at the turbine exit and the thermal efficiency of the cycle for one unit.
I need correct solution
DESIGN a steam power plant that produces 70 MW of power. The plant should have an open heater and a reheater operating simultaneously utilizing saturated steam from the partial expansion of steam in the turbine. The remaining steam is reheated to the inlet temperature of steam when it enters the turbine. Another open heater is used to bled saturated steam when the steam partially expands in the turbine after reheating, remaining steam is expanded to the exhaust pressure of the turbine. Other pertinent data are as follows: steam turbine: inlet pressure – 6.6 MPa; inlet temperature - 420 C; exhaust pressure – 10 KPa; stages of turbine – all pressure compounded stage; pumps – 90% efficient; shaftings – 75%% efficient; generator – 95% efficient. DRAW a line diagram of the design plant indicating the pressure, temperature and enthalpy at each point and specify the following: a) the mass requirement of the steam plant in kg/hr b) the masses extracted in kg/hr and c) the plant thermal…
4