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Estimate the concentration (in ppm) and the mass emission rate of NOx (in kg/hr, expressed as NO) if a coal containing 1.5% nitrogen is combusted at 1400 K using an air/fuel ratio that is 1.5 times the stoichiometric ratio. Consider only fuel NOx and assume that only NO is formed. The combustion rate of coal is 600 kg/hr, and the fuel gas (with an average molecular weight of 27.5) is produced at the rate of 13,000 kg/hr.
a house is maintained at 75degf in the winter by a heat pump. the house is losing heat at a rate of 60000 btuh through
for the spring-mass-pulley system of figure 5-37 the moment of inertia of the pulley about the axis of rotation is j
assuming a znd structure determine the key properties for the detonation wave described in problem 1. propagating
The desire is to raise the temperature of the ambient air from 60 degree F to 350 degrees F ---- I need to calculate the amount of steam energy in BTU's per minutes and lbs of steam per minute necessary to accomplish the increase in air temperatur..
a vehicle is moving along a straight line with an acceleration given by ms2 where s is in m. at s 0 t 0 and v 6 ms.
Consider a piston-cylinder system with an initial volume of 0.04 m3 at 200 kPa. Calculate the work being carried out to increase the volume to 0.1 m3 for each of the following processes
3 rigid tank initially contains refrigerant-134a at 14oc. at this state 70 of the mass is in the vapour phase and the
a supersonic aircraft consumes 5320imperial gallons of kerosene per hour of flight ang flies an average of 14 hours per
a subway train with cars a b and c is traveling at 66fts when the brakes are applied on cars a and b causing them to
A low pass butter worth filter has a corner frequency of 1 khz and a roll-off of 24 db per octave in the stop band. If the output amplitude of a 3 khz sine wave is .1 V, what will be the output amplitude of a 20 khz sine wave if the input amplitudes ..
a boat carrying passengers weighs 1200lbs. if the boat is moving in a circular path with a radius of 40ft and a
air is compressed in a steady-flow compressor via a polytropic process from 15 psia and 60ordmf state 1 to 75 psia and
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