شكنذرس Q3]Eddy diffusion calculationA stream of air at 100 kPa and 300 K is flowing on the top surface of a thin flat sheet of solid naphthalene oflength 0.2 m with a velocity of 20 m/sec. The other data are:Mass diffusivity of naphthalene vapor in air = 6*106 m²/secKinematic viscosity of air= 1.5 * 10-³ m²/secConcentration of naphthalene at the air-solid naphthalene interface = 1*105 kmol/m³Sh = 0.664 Re/Sc¹/3 where Re₁ = lvpμCalculate:(a) The overage mass transfer coefficient over the flat plate(b) The rate of loss of naphthalene from the surface per unit width

The objective is to determine:1) the mass transfer coefficient over the flat plate.2) The rate of…

Q31 Eddy diffusion calculation A stream of air at 100 kPa and 300 K is flowing on the top surface of a thin flat sheet of solid naphthalene of length 0.2 m with a velocity of 20 m/sec. The other data are: Mass diffusivity of naphthalene vapor in air = 6*106 m²/sec Kinematic viscosity of air = 1.5 * 10.5 m²/sec Concentration of naphthalene at the air-solid naphthalene interface = 1*105 kmol/m³ Sh= 0.664Re/Sc¹/3 where Re, p " Calculate: (a) The everage mass transfer coefficient over the flat plate (b) The rate of loss of naphthalene from the surface per unit width

Q31 Eddy diffusion calculation A stream of air at 100 kPa and 300 K is flowing on the top surface of a thin flat sheet of solid naphthalene of length 0.2 m with a velocity of 20 m/sec. The other data are: Mass diffusivity of naphthalene vapor in air = 6106 m²/sec Kinematic viscosity of air = 1.5 10.5 m²/sec Concentration of naphthalene at the air-solid naphthalene interface = 1*105 kmol/m³ Sh= 0.664Re/Sc¹/3 where Re, p " Calculate: (a) The everage mass transfer coefficient over the flat plate (b) The rate of loss of naphthalene from the surface per unit width

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

Question

شكنذرس

Q3]
Eddy diffusion calculation
A stream of air at 100 kPa and 300 K is flowing on the top surface of a thin flat sheet of solid naphthalene of
length 0.2 m with a velocity of 20 m/sec. The other data are:
Mass diffusivity of naphthalene vapor in air = 6*106 m²/sec
Kinematic viscosity of air= 1.5 * 10-³ m²/sec
Concentration of naphthalene at the air-solid naphthalene interface = 1*105 kmol/m³
Sh = 0.664 Re/Sc¹/3 where Re₁ = lvp
μ
Calculate:
(a) The overage mass transfer coefficient over the flat plate
(b) The rate of loss of naphthalene from the surface per unit width

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