Engineering, 31.10.2019 00:31 kayleeblanton1132
Afuel oil is fed to a furnace and burned with 30.0% excess air. the oil contains 87.0 wt% c, 10.0% h, and 3.00% s. analysis of the furnace exhaust gas shows only n2, o2, co2, so2, and h2o. the sulfur dioxide emission rate is to be controlled by passing the exhaust gas through a scrubber in which most of the so2 is absorbed in an alkaline solution. the gases leaving the scrubber (all of the n2, o2, and co2, and some of the h2o and so2 entering the unit) pass out to a stack. the scrubber has a limited capacity, however, so that a fraction of the furnace exhaust gas must be bypassed directly to the stack. at one point during the operation of the process, the scrubber removes 95.0% of the so2 in the gas fed to it, and the combined stack gas contains 634.5 ppm (parts per million) so2 on a dry basis; that is, every million moles of dry stack gas (i. e. not including the water) contains 634.5 moles of so2. we wish to calculate the fraction of the exhaust bypassing the scrubber at that moment.
Answers: 3
Engineering, 04.07.2019 18:10, kevin72836
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
Engineering, 04.07.2019 18:10, siri5645
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:10, Strick1530
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Afuel oil is fed to a furnace and burned with 30.0% excess air. the oil contains 87.0 wt% c, 10.0% h...
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