Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
19.16 A 0.2-m-wide plate, 0.8 m long, is placed on the bottom of a shallow tank. The plate is heated, and maintained at a constant surface temperature of 60 C. Liquid water 12 cm deep flows over the flat plate with bulk volumetric flow rate of 2.4 x 10-3 m³/s. The bulk liquid water temperature may be assumed to remain constant at 20 C as it flows along the length of the plate. Thermophysical properties of water are given in the table below. Temper Density, Viscosity, Heat ature p(kg/m³) μ (kg/ Capacity, Thermal Conductivity, (C) m-s) Cp (J/kg K) k (W/m K) 260 20 998.2 993 x 10-6 4282 0.597 40 992.2 658 × 10-6 4175 0.663 60 983.2 472 × 10-6 4181 0.658 a. What are the values of Rе and Pr for this convective heat- transfer process? Is the flow laminar or turbulent at the end of the plate? b. What is the local heat flux at a distance 0.5 m from the leading edge of the plate? c. What is the total heat-transfer rate from the plate surface? d. What are the thicknesses of the hydrodynamic and thermal boundary layers at the end of the plate?

19.16 A 0.2-m-wide plate, 0.8 m long, is placed on the bottom of a shallow tank. The plate is heated, and maintained at a constant surface temperature of 60 C. Liquid water 12 cm deep flows over the flat plate with bulk volumetric flow rate of 2.4 x 10-3 m³/s. The bulk liquid water temperature may be assumed to remain constant at 20 C as it flows along the length of the plate. Thermophysical properties of water are given in the table below. Temper Density, Viscosity, Heat ature p(kg/m³) μ (kg/ Capacity, Thermal Conductivity, (C) m-s) Cp (J/kg K) k (W/m K) 260 20 998.2 993 x 10-6 4282 0.597 40 992.2 658 × 10-6 4175 0.663 60 983.2 472 × 10-6 4181 0.658 a. What are the values of Rе and Pr for this convective heat- transfer process? Is the flow laminar or turbulent at the end of the plate? b. What is the local heat flux at a distance 0.5 m from the leading edge of the plate? c. What is the total heat-transfer rate from the plate surface? d. What are the thicknesses of the hydrodynamic and thermal boundary layers at the end 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
See similar textbooks
icon
Related questions
Question
19.16 A 0.2-m-wide plate, 0.8 m long, is placed on the bottom of a shallow tank. The plate is heated, and maintained at a constant surface temperature of 60 C. Liquid water 12 cm deep flows over the flat plate with bulk volumetric flow rate of 2.4 x 10-3 m³/s. The bulk liquid water temperature may be assumed to remain constant at 20 C as it flows along the length of the plate. Thermophysical properties of water are given in the table below. Temper Density, Viscosity, Heat ature p(kg/m³) μ (kg/ Capacity, Thermal Conductivity, (C) m-s) Cp (J/kg K) k (W/m K) 260 20 998.2 993 x 10-6 4282 0.597 40 992.2 658 × 10-6 4175 0.663 60 983.2 472 × 10-6 4181 0.658 a. What are the values of Rе and Pr for this convective heat- transfer process? Is the flow laminar or turbulent at the end of the plate? b. What is the local heat flux at a distance 0.5 m from the leading edge of the plate? c. What is the total heat-transfer rate from the plate surface? d. What are the thicknesses of the hydrodynamic and thermal boundary layers at the end of the plate?
Transcribed Image Text:19.16 A 0.2-m-wide plate, 0.8 m long, is placed on the bottom of a shallow tank. The plate is heated, and maintained at a constant surface temperature of 60 C. Liquid water 12 cm deep flows over the flat plate with bulk volumetric flow rate of 2.4 x 10-3 m³/s. The bulk liquid water temperature may be assumed to remain constant at 20 C as it flows along the length of the plate. Thermophysical properties of water are given in the table below. Temper Density, Viscosity, Heat ature p(kg/m³) μ (kg/ Capacity, Thermal Conductivity, (C) m-s) Cp (J/kg K) k (W/m K) 260 20 998.2 993 x 10-6 4282 0.597 40 992.2 658 × 10-6 4175 0.663 60 983.2 472 × 10-6 4181 0.658 a. What are the values of Rе and Pr for this convective heat- transfer process? Is the flow laminar or turbulent at the end of the plate? b. What is the local heat flux at a distance 0.5 m from the leading edge of the plate? c. What is the total heat-transfer rate from the plate surface? d. What are the thicknesses of the hydrodynamic and thermal boundary layers at the end of the plate?
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS