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A preliminary (Class 4) estimate of the ISBL capital cost of building a 200,000 ton per year ethanol plant by corn dry milling has been stated as $130 MM -30%/+50%. The plant is to be built on a greenfield site and offsite costs are estimated to be between $40 MM and $60 MM. Estimate a value for the total project cost that will give 98% confidence that the project can be carried out within the amount estimated.
Calculate the percentage of solvent in the dried fabric by weight. What is the concentration of solvent in the dryer exhaust (in g/m3) if the exhaust is at 80 degrees C and 1 atm? The solvent has a molecular weight of 86.
The massive emission of carbon dioxide (CO2), the major component of greenhouse gasin the environment, is receiving significant attention around the world. This has led tonumerous proposals to sequester or eliminate the CO 2. One of the options is..
The average energy required to free an electron from the dynode surface is 10 eV. For each incident ectron released from rest, how many electrons are freed at the first dynode? At the last dynode?
If a 500-hp, 90% efficient synchronous motor, operating at full load and 0.8 leading power factor, is added instead of the capacitor in part (a), calculate the resulting power factor.
A sinusoidal signal, with amplitude of 3.25 volts, is applied to a uniform quantizer of the mid-tread type whose output takes on the values 0, ±1, ±2, ±3 volts. Sketch the waveform of the resulting quantizer output for one complete cycle of the in..
Additional data: Use the Lee-Kesler graphs for enthalpy and entropy. The saturation pressure of propane at -51.4 °C is 0.66 bar. Take the ideal-gas CP of propane at these conditions to be constant and equal to 67 J/mole K.
If the motor is operating on load with a power angle of -20°, and the excitation is adjusted so that the excitation voltage is equal in magnitude to the terminal voltage, determine the armature current and the power factor of the motor.
Discuss the sustainability issues for the various filtration options available to the brewer. Based on your discussion, indicate the possibilities to make the filtration operation more sustainable.
determine the minimum service life allowable for the facilities at the distant location for this alternative to meet the required incremental return. The salvage value should be assumed to be zero, and straight-line depreciation accounting may be ..
Draw the graph carefully. Please use one graph per country and show both the autarkyand the free trade equilibrium on each graph.
Steam enters a cooling tower at 200 °C and exits at 60 °C. Cooling is supplied by the surroundings which are assumed to be at 30 °C. The process takes place under atmospheric pressure (1 bar).
find the speed of the motor. Neglect the brush-contact drop.
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