The following data is obtained during a test on a steam boiler: Steam generation rate Steam pressure Quality of steam Feed water temperature Coal consumption CV of coal 2. 6.3 tonne/hr 10 bar 0.95 dry 35°C 0.7 tonne/hr 32 MJ/kg Determine: 2.1. Equivalent evaporation and boiler efficiency If the feed water temperature is raised to 100 °C and the boiler efficiency is increased by 5% 2.2. while other data remain the same, find saving in coal consumption per hour. JEE = 10.08; nb = 71.1%; 16.5%|

The following data is obtained during a test on a steam boiler: Steam generation rate Steam pressure Quality of steam Feed water temperature Coal consumption CV of coal 2. 6.3 tonne/hr 10 bar 0.95 dry 35°C 0.7 tonne/hr 32 MJ/kg Determine: 2.1. Equivalent evaporation and boiler efficiency If the feed water temperature is raised to 100 °C and the boiler efficiency is increased by 5% 2.2. while other data remain the same, find saving in coal consumption per hour. JEE = 10.08; nb = 71.1%; 16.5%|

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

Completely solve and box the final answer. Write legibly Determine the mass flow rate of steam through a nozzle having isentropic flow through it. Steam enters the nozzle at 10 bar, 500°C, and leaves at 6 bar. The cross-section area at the exit of the nozzle is 20 cm2. The velocity of steam entering the nozzle may be considered negligible. [Ans. 2.2 kg/s] Note: Please don't copy the answer/solution from the internet, I need a more in-depth solution for this problem. Thank you
In a power plant operating with water and steam, the following measurements and observations were done at various stages along the system. the temperature is190oC and the specific volume, v is 0.15636 m3/kg. Based on this observation, identify the following values: pressure, P (in kPa) = _____, and enthalpy, h (in kJ/kg) = _____
There exists reduction of 1 pound of steam per minute undergoing an isothermal process from 27.5 bar, 316 deg C to 6.8 bar. Compute for steady flow work in BTU/min if change in kinetic energy is 42 hp
Water flows through a horizontal coil heated by steam condenaing on the outside. If the inlet pressure and temperatire are 2 atm and 160°F (state 1) and at the exit 1 atm and 220 °F (state 2), calculate the heat added to the coil per pound mass of water. The entering velocity is 5 ft/s, and the leaving, 500 ft/s. Data: H1=127.9 Btu/lb, H2=1154.4 Btu/lbA. 1031 Btu/lbB. 1042 Btu/lbC. 1048 Btu/lbD. 1052 Btu/lb
Assume 8.72 lb/sec of fluid enter a steady-state, steady-flow system with P1= 92.98 psia, ρ1 = 0.338 lb/ft3, v1 = 91.21 fps, u1 = 794.36 BTU/lb, and leave with P2 = 28.14 psia, ρ2 = 0.181 lb/ft3, v2 = 409.94 fps, and u2 = 750.5 BTU/lb. During the passage through the open system, each pund rejects 13.2 BTU of heat. Determine the work in hp.
Correct Solution Fast. 25 kg of water, initially at 40 ° C and 1 bar, occupying 0.06 m3 undergoes a process in which it attains a final state of 100 ° C and 300 bar. Assume that under these conditions the water can be treated as an incompressible fluid with specific heat, c(T) = 0.003 kJ/kg.K^2 + 7.38 kJ/kgK. Determine Delta H in KJ.
In a condenser test, the following observations were made:Vacuum = 69 cm of HgBarometer = 75 cm of HgMean temperature of condenser = 35°CHot well temperature = 28°CAmount of cooling water = – 50,000 kg/hrInlet temperature = 17°COutlet temperature = 30°CAmount of condensate per hour = 1250 kgFind(a) the amount of air present per m3 of condenser volume.(b) the state of steam entering the condenser.(c) the vacuum efficiency .R for air = 287 J/kgK
Water flows through a horizontal coil heated by steam condensing on the outside. If the inlet pressure and temperature are 2 atm and 160°F (state 1) and at the exit 1 atm and 220°F (state 2), calculate the heat added to the coil per pound mass of water. The entering velocity in 5 ft/s, and the leaving, 500 ft/s. Data: H1=127.9 BTU/lb, H2=1154.4 BTU/lbA. 1031 BTU/lbB. 1042 BTU/lbC. 1048 BTU/lbD. 1052 BTU/lb
Assume 2.3 lb/sec of fluid enter a steady-state, steady-flow system with Pi = 105.57 psia, p1 = 0.307 lb/ft^3, v1 = 96.19 fps, u1 = 794.13 BTU/lb, and leave with P2 = 12.97 psia, p2 = 0.13 lb/ft^3, v2 = 431.41 fps, and u2 = 759.71 BTU/lb. During the passage through the open system, each pound rejects 13.2 BTU of heat. Determine the work in hp.
In a power plant operating with water and steam, the following measurements and observations were done at various stages along the system. the temperature is 115oC and the phase of the substance is saturated liquid. Based on this observation, identify the following values: pressure, P (in kPa) = _____ enthalpy, h (in kJ/kg) = _____ and the specific volume, v (in m3/kg) = _____
A closed, rigid tank with a volume of 0.6m ^ 3 contans saturated water vapor at900 kPa the nital stale The tar pressures decreased to 300 kPa through heat exchange with the surroundings Question 1 to apply to Problem 1 What is the initial specific volume v, m^ 3 kg ?
Steam at 44 bar and a dryness fraction, x = 0.9 is throttled to a pressure of 12 bar. Calculate thedifference in power output in kilowatts between the following two expansion processes:a) Steam at the initial pressure of 44 bar and x = 0.9 at State 1 is expanded in a turbine to State 3 at 0.12 bar.b) Steam at the reduced pressure of 12 bar after throttling at State 2 is expanded in another turbine to State 4 at the same exhaust pressure of 0.12 bar.The mass flow rate of steam is 8 kg/sec in both cases and the expansion in both turbines can be assumed to be reversible and adiabatic. Sketch both expansion processes on the same T-s diagram using the respective initial and final state points as described above.Explain the reason for the difference in power output.Calculate the mass flow rate of steam for the turbine operating at the throttled/reduced pressure to generate the same output as the turbine operating at the pressure before throttling.NOTE: You are required to number the state…