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1. Mass transfer coefficients can be of either local or overall type.
a. Explain carefully what the local and overall mass transfer coefficients represent.
b. How does the concentration gradient for the molar transfer rate differ when expressing the transfer in overall and local transfer coefficients respectively?
2. a. Explain the problems of flooding and channeling in packed tower
b. Explain the construction and working of sieve tray, bubble cap tray and counterflow tray
3. Explain the differences between overall, Murphree and point tray efficiency.
Consider a heat-exchanger control loop with no dead time. It is controlled by a PD controller. The rate time is 0.25 min. A real PD controller is used with filtering where a = 0
is their any connection
a) List various advantages and drawbacks of using transparent polymeric materials for eyeglass lenses. (b) Cite 4 properties (in addition to being transparent) that are important
Ask queswhat is axontion #Minimum 100 words accepted#
Mechanism of hydrolysis of nitroalkanes
manufacture process
describe layout of wet process for portland cement industries ?
Finish the molecular species balance problem I started in class, i.e. find the composition of the product gas.
cristallinity of PVDF
Point defects: Point defects are defects which are not extended in space in any dimension. There is no strict limit for how small a "point" defect should be, but typically the ter
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