Download Chemical Engineering: Solutions to the Problems in Volume 1 by J R Backhurst, J H Harker, J. F. Richardson PDF

By J R Backhurst, J H Harker, J. F. Richardson

This quantity within the Coulson and Richardson sequence in chemical engineering comprises complete labored strategies to the issues posed in quantity 1. when the most quantity includes illustrative labored examples during the textual content, this booklet comprises solutions to the more difficult questions posed on the finish of every bankruptcy of the most text.

those questions are of either a regular and non-standard nature, and so will end up to be of curiosity to either educational employees instructing classes during this sector and to the prepared pupil. Chemical engineers in who're searching for a typical way to a real-life challenge also will locate the e-book of substantial curiosity.

* a useful resource of knowledge for the coed learning the cloth contained in Chemical Engineering quantity 1
* A valuable approach to studying - solutions are defined in complete

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Extra resources for Chemical Engineering: Solutions to the Problems in Volume 1

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17 A Bingham plastic material is flowing under streamline conditions in a pipe of circular cross-section. What are the conditions for one half of the total flow to be within the central core across which the velocity profile is flat? The shear stress acting within the fluid, Ry , varies with velocity gradient dux /dy according to the relation: Ry Rc D k dux /dy where Rc and k are constants for the material. 32 CHEMICAL ENGINEERING VOLUME 1 SOLUTIONS Solution The shearing characteristics of non-Newtonian fluids are shown in Fig.

If the existing pump is capable of developing a pressure of 300 kN/m2 , will it be suitable for use during the period required for the repairs? 05 mm. 23 and Fig. 8 to find the volumetric flowrate and then calculating the pressure drop through the alternative pipe system. 52 ð 10 From Fig. 19 m/s. 0177 m2 . 074 m3 /s. 36 m/s. 44 m/s. 6 ð 105 . 32 ð 106 . 0005 respectively. From Fig. 6 kN/m2 In addition, there will be a small pressure drop at the junction of the two pipes although this has been neglected in this solution.

150 Ns/m2 ) is flowing through a pipe of diameter 40 mm and length 200 m. Starting with the rheological equation, show that the relation between pressure gradient 1P/l and volumetric flowrate Q is: QD 1P r 4 1 8l p 1 4 X C X4 3 3 where l is the pipe radius, p is the plastic viscosity, and X is the ratio of the yield stress to the shear stress at the pipe wall. Calculate the flowrate for this pipeline when the pressure drop is 600 kN/m2 . It may be assumed that the flow is laminar. 58 CHEMICAL ENGINEERING VOLUME 1 SOLUTIONS Solution For a Bingham-plastic material, the shear stress Rs at radius s is given by: RY D C Rs dux ds p dux D0 ds Rs Rs RY RY The central unsheared core has radius rc D r RY /R (where r D pipe radius and R D wall shear stress) since the shear stress is proportional to the radius s.

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