Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A bituminous coal is burned with air in a boiler furnace, The coal is fed at a rate of 40,000 kg/h and has an ultimate analysis of 76 wt% C, 5% H, 8% 0, negligible amounts of N and S. and 11% noncombustible ash (see Problem 9.49), and a higher heating value of 25,700 kJ/kg. Air enters a pre-heater at 30°C and 1 atm with a relative humidity of 30%, exchanges heat with the hot flue gas leaving the furnace, and enters the furnace at temperature Ta(°C). The flue gas contains 7.71 mole% CO2 and 1.29 mole% CO on a dry basis, and the balance a mixture of O2, N2, and H20. It emerges from the furnace at 260°C and is cooled to 150°C in the pre-heater. Noncombustible residue (slag) leaves the furnace at 450°C and has a heat capacity of 0.97 kJ/ (kg·°C).
(a) Prove that the air-to-fuel ratio is 16.1 standard cubic meters/kg coal and that the flue gas contains 4.6% H2O by volume.
(b) Calculate the rate of cooling required to cool the flue gas from 260°C to 150°C and the temperature to which the air is preheated. (Note: A trial-and-error calculation is required.) (c) If 60% of the heat transferred from the furnace (-Q) goes into producing saturated steam at 30 bar from liquid boiler feed water at 50°C, at what rate (kg/h) is steam generated?
Why a substance is being heated at a fast rate the temperature of decomposition
Assist with the setting of design variables necessary for sizing equipment
Use Laplace transformation to solve the initial value problem
Equal rates of mass transfer for the production of the fine chemical are required. This is often required for certain types of organic synthesis.
Application of reverse osmosis principles for the desalination of sea water
Prepare the design and evaluation of a new chemical manufacturing process.
Adsorption and Membrane Processes
Draw T-S diagram of the cycle.
The potential energy between two atoms A and B are constants and r the interatomic separation distance.
Implications of the future of fabrication for international trade, transportation, and logistics
The atmospheric pressure of 100k Pa acts on the other side of the piston. The gas is heated until the volume is doubled and the final pressure is 500 kPa. Calculate the work done by the gas.
Evaluate particle diameter at different terminal gas velocities
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd