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a. What alarms would you add to the vaporizer control scheme shown in Figure 5.13? Indicate whether the alarm would signal high or low conditions, what the alarm would signify, and what operator response would be required in each case.
b. Which alarms should activate a shutdown trip, and which valves should be closed?
Explain the term "Selectivity" and "Yield".Selectivity is defined as the ratio of moles of desired product to moles of undesired product.Yield is defined as the ratio of moles of product formed to moles of reactant eitherfed or consumed and What a..
Aim To understand the fundamentals of chemical bonding and ionic equilibrium and its application in engineering problems.
Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the molar heat capacity of silver). c. It takes 1.25 kJ of energy to heat a sample of pure silver from 12.0C to 15.2C. Calculate the mass of the sample of silv..
Question - 1 In an oxygen -nitrogen mixture at 10 atmosphere and 25 oc , the concentration of oxygen at two places 0.2 cm apart are 10 and 20 volume percent respectively. The rate of diffusion of oxygen expressed as g /cm2 -hr for the case of unic..
Two rods, one of butadiene rubber (BR) and one of high-density polyethylene (HDPE), are rigidly connected in series. The BR rod is 1m long with a diameter of 10mm, while the corresponding dimensions for the HDPE rod are 0.8m and 5mm, respectively.
Calculate the mass of the metal in gr than can be prepared from 150 grams of aluminum and 250 grams of iron (iii) oxide
Suppose that R2 is decreased to 0.5 min/ft2. Compare the old and new values of the ultimate gain and the critical frequency. Would you expect the control system performance to become better or worse, justify your answer.
air at 4mpa and 3000c enters a will insulated turbine operating at steady state with negligible velocity. the air
How many years of useful life should be estimated for the reactor if 12 percent of the total annual expenses for the plant are due to the cost for reactor depreciation? The straight-line method for determining depreciation should be used.
A process heater uses Dowtherm A heat transfer fluid to provide 850 kW of heat. Estimate the annual operating cost of the heater if the Dowtherm evaporator is 80% efficient and the price of natural gas is $4.60/MMBtu. Assume 8000 operating hours p..
What results can be expected in the near-term? The mid-term? The long-term? Nanotech's development can usefully be divided into stages, for example:
Carbon monoxide (CO) is burnt in presence of 200% excess pure oxygen and the flame temperature achieved is 2298 K. The inlet streams are at 25 °C.
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