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(a) Define convection heat transfer and differentiate between natural convection and forced convection. (b) What are the dependent factors for heat transfer by forced convection? (c) Define Nusselt number (Nu) and state what it represents in heat transfer. (d) Define the Prandtl number (Pr) and what is the significance of the following (i) Pr = 1, (ii) Pr>> 1 and (iii) Pr << 1 (e) Assuming that the fluid properties remain constant, why would the heat transfer over a flat plate in a direction parallel to the longer side of a plate be higher than that in a direction parallel to the shorter side of the plate.

(a) Define convection heat transfer and differentiate between natural convection and forced convection. (b) What are the dependent factors for heat transfer by forced convection? (c) Define Nusselt number (Nu) and state what it represents in heat transfer. (d) Define the Prandtl number (Pr) and what is the significance of the following (i) Pr = 1, (ii) Pr>> 1 and (iii) Pr << 1 (e) Assuming that the fluid properties remain constant, why would the heat transfer over a flat plate in a direction parallel to the longer side of a plate be higher than that in a direction parallel to the shorter side of the plate.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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(a) Define convection heat transfer and differentiate between natural convection and forced convection. (b) What are the dependent factors for heat transfer by forced convection? (c) Define Nusselt number (Nu) and state what it represents in heat transfer. (d) Define the Prandtl number (Pr) and what is the significance of the following (i) Pr = 1, (ii) Pr>> 1 and (iii) Pr << 1 (e) Assuming that the fluid properties remain constant, why would the heat transfer over a flat plate in a direction parallel to the longer side of a plate be higher than that in a direction parallel to the shorter side of the plate.
Transcribed Image Text:(a) Define convection heat transfer and differentiate between natural convection and forced convection. (b) What are the dependent factors for heat transfer by forced convection? (c) Define Nusselt number (Nu) and state what it represents in heat transfer. (d) Define the Prandtl number (Pr) and what is the significance of the following (i) Pr = 1, (ii) Pr>> 1 and (iii) Pr << 1 (e) Assuming that the fluid properties remain constant, why would the heat transfer over a flat plate in a direction parallel to the longer side of a plate be higher than that in a direction parallel to the shorter side of the plate.
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