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A process stream is heated as a gas from 298.15 to 523.15 K (25°C to 250°C) at constant pressure. A quick estimate of the energy requirement is obtained from Eq. (4.3), with Cp taken as constant and equal to its value at 298.15 K (25°C). Is the estimate of Q likely to be low or high? Why?
Propose a model which will show how temperature in the tank changes with time. State assumption used. Solve this model to obtain T(t) given that T(t=200s) = 50°C.
For the conditions indicated in Prob. 7, prepare a log-log plot of fluid velocity in feet per second versus optimum economic pipe diameter in inches. The plot should cover a fluid-velocity range of 1 to 100 ft/s and a pipe-diameter range of 1 to 1..
A mixture of benzene and toluene containing 60 mole percent benzene is to be separated into an overhead product containing 96 mole percent benzene and a bottoms containing 25 mole percent benzene.
How much net saving after taxes would the company
Acetylene (C2H2) and butane (C4H10) are gaseous fuels with enthalpies of combustion of 49.9 kJ/g and 49.5 kJ/g, respectively. Compare the energy available from the combustion of a given volume of acetylene to the combustion energy from the same ..
In the storage of flammable liquids, if the composition of the vapor-air mixture above the liquid surface falls within the flammability limits, a floating roof tank would need to used or the tank blanketed with inert gas. Check if the vapor compos..
Based on the 8421 BCD code for decimal digits 0 through 9, develop a block diagram for a BCD encoder and its implementation scheme.
Estimate the heat exchange area required for an evaporator that concentrates 4000 kg/h of apple juice by removing 40% of the water content. Low pressure steam at 120 °C is available as a heat source.
A feed to a column has the composition given in the table below, and is at a pressure of 14 bar and a temperature of 60 °C. Calculate the flow and composition of the liquid and vapor phases. Equilibrium data can be taken from De Priester charts (D..
Calculate the relative change in the rate coefficient for the reaction at the Earth's surface (T = 295 K) and at the top of the troposphere (T = 220 K). The reaction has an activation energy of 19.5 kJ/mol.
Suppose the various color frequency and intensity values that comprise a color analysis are combined into a single numerical value, C, for a particular yellow dye. During a test period in which the reactor conditions are carefully controlled and t..
How much steam is required for each kilogram mass of entering acid, and what is the concentration of the hot acid?
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