Industrial Plastics: Theory and Applications
6th Edition
ISBN: 9781285061238
Author: Lokensgard, Erik
Publisher: Delmar Cengage Learning
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Chapter 7, Problem 7.4Q
Interpretation Introduction
Interpretation:
The given statement should be completed.
Concept Introduction:
Colorants are used to give a color to the plastic products. Plastics can have a variety of colors, and this property has exploited in the plastic manufacturing industry to make multicolored plastics.There are four basic types of colorants used in the plastic industry. They are dyes, organic pigments, inorganic pigments, special effect pigments.
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8. A gas is admitted at a rate of 0.015 m³s-¹ to a vertical glass pipe with
an inside diameter of 50 mm. The gas bubbles that form travel with a
velocity of 32 ms-¹. Determine the gas void fraction and the velocity
of the liquid if the volumetric flow is 2.5 x 10-5 m³s-1. Answer: 0.24,
1.7 ms-1
9 Characterise the main concepts of a homogeneous flow model sepa-
3. A mixture of air and water at a temperature of 25°C flows up
through a vertical tube with a length of 4 m and an internal diameter
of 25.4 mm with the exit of the tube being at atmospheric pressure.
The mass flows of the air and the water are 0.007 kgs-1 and 0.3 kgs-1,
respectively. For air, the density is 1.2 kgm³ and viscosity is 1.85 x
10-5 Nsm-2, and for water, the density is 1000 kgm-3 and viscosity is
8.9 × 10-4 Nsm-2. Answer: 2.7 kNm-2m-1
15. Show that for a one-dimensional annular flow in a horizontal pipe
with no acceleration, the pressure gradient on the gas core is
dp=
4ti
dz d√√α
where t, is the interfacial shear stress and a is the gas void fraction.
Chapter 7 Solutions
Industrial Plastics: Theory and Applications
Ch. 7 - Prob. 7.1QCh. 7 - Prob. 7.2QCh. 7 - Prob. 7.3QCh. 7 - Prob. 7.4QCh. 7 - Prob. 7.5QCh. 7 - Prob. 7.6QCh. 7 - Prob. 7.7QCh. 7 - Prob. 7.8QCh. 7 - Prob. 7.9QCh. 7 - Prob. 7.10Q
Ch. 7 - Prob. 7.11QCh. 7 - Prob. 7.12QCh. 7 - Prob. 7.13QCh. 7 - Prob. 7.14QCh. 7 - Prob. 7.15QCh. 7 - Prob. 7.16QCh. 7 - Prob. 7.17QCh. 7 - Prob. 7.18QCh. 7 - Prob. 7.19QCh. 7 - Prob. 7.20QCh. 7 - Prob. 7.21QCh. 7 - Prob. 7.22QCh. 7 - Prob. 7.23QCh. 7 - Prob. 7.24QCh. 7 - Prob. 7.25QCh. 7 - Prob. 7.26QCh. 7 - Prob. 7.27QCh. 7 - Prob. 7.28QCh. 7 - Prob. 7.29QCh. 7 - Prob. 7.30QCh. 7 - Prob. 7.31Q
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