Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
Water at a rate of 4000 kg/hr is heated from 30 °C to 80 °C by pressurized water that enters the heat exchanger at 150 °C and a flow rate of 6000 kg/hr. A shell-and-tube heat exchanger is used in which the water makes two passes through the shell and the pressurized water makes four tube passes. The overall heat transfer coefficient of the heat exchanger is 350 W/m2.K. Please use LMTD method to calculate the area required for the heat exchanger. (Hint: Guessing to = 117 °C, then use Table A.6 to get cph) T, 1.0 0.9 6.0 4.0 3.0 2.0 1.5 1.0 0.8 0.6 0.4 0.2 0.8 0.7 0.6 T;-T, R% = 0.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 T¡- li

Water at a rate of 4000 kg/hr is heated from 30 °C to 80 °C by pressurized water that enters the heat exchanger at 150 °C and a flow rate of 6000 kg/hr. A shell-and-tube heat exchanger is used in which the water makes two passes through the shell and the pressurized water makes four tube passes. The overall heat transfer coefficient of the heat exchanger is 350 W/m2.K. Please use LMTD method to calculate the area required for the heat exchanger. (Hint: Guessing to = 117 °C, then use Table A.6 to get cph) T, 1.0 0.9 6.0 4.0 3.0 2.0 1.5 1.0 0.8 0.6 0.4 0.2 0.8 0.7 0.6 T;-T, R% = 0.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 T¡- li

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

Heat Transfer Question 

**Problem #2:** Water at a rate of 4000 kg/hr is heated from 30 °C to 80 °C by pressurized water that enters the heat exchanger at 150 °C and a flow rate of 6000 kg/hr. A shell-and-tube heat exchanger is used in which the water makes two passes through the shell and the pressurized water makes four tube passes. The overall heat transfer coefficient of the heat exchanger is 350 W/m²·K. Please use the LMTD method to calculate the area required for the heat exchanger. *(Hint: Guessing \( t_o = 117 \, ^\circ \text{C}, \) then use Table A.6 to get \( c_{p,h} \)).* **Diagrams:** 1. **Heat Exchanger Diagram:** - The diagram illustrates a shell-and-tube heat exchanger. - Water flows into the exchanger at two different points, showing two separate flow paths. - The inner tube has hot water entering and leaving, depicted with arrows labeled \( T_i \) (entrance) and \( t_o \) (exit). - The outer shell also shows two entry and exit points for cold water, labeled \( t_i \) and \( T_o \). 2. **Graph:** - The graph is a heat exchanger correction factor chart used for calculating the Log Mean Temperature Difference (LMTD). - The x-axis is labeled with the dimensionless parameter \( P = \frac{t_o - t_i}{T_i - t_i} \). - The y-axis represents the correction factor \( F \) ranging from 0.5 to 1.0. - Lines on the graph are marked with different values of the parameter \( R = \frac{T_i - T_o}{t_o - t_i} \), ranging from 0.2 to 6.0. - These lines help determine the correct factor for calculating the heat exchanger area based on \( R \) and \( P \) values.
Transcribed Image Text:**Problem #2:** Water at a rate of 4000 kg/hr is heated from 30 °C to 80 °C by pressurized water that enters the heat exchanger at 150 °C and a flow rate of 6000 kg/hr. A shell-and-tube heat exchanger is used in which the water makes two passes through the shell and the pressurized water makes four tube passes. The overall heat transfer coefficient of the heat exchanger is 350 W/m²·K. Please use the LMTD method to calculate the area required for the heat exchanger. *(Hint: Guessing \( t_o = 117 \, ^\circ \text{C}, \) then use Table A.6 to get \( c_{p,h} \)).* **Diagrams:** 1. **Heat Exchanger Diagram:** - The diagram illustrates a shell-and-tube heat exchanger. - Water flows into the exchanger at two different points, showing two separate flow paths. - The inner tube has hot water entering and leaving, depicted with arrows labeled \( T_i \) (entrance) and \( t_o \) (exit). - The outer shell also shows two entry and exit points for cold water, labeled \( t_i \) and \( T_o \). 2. **Graph:** - The graph is a heat exchanger correction factor chart used for calculating the Log Mean Temperature Difference (LMTD). - The x-axis is labeled with the dimensionless parameter \( P = \frac{t_o - t_i}{T_i - t_i} \). - The y-axis represents the correction factor \( F \) ranging from 0.5 to 1.0. - Lines on the graph are marked with different values of the parameter \( R = \frac{T_i - T_o}{t_o - t_i} \), ranging from 0.2 to 6.0. - These lines help determine the correct factor for calculating the heat exchanger area based on \( R \) and \( P \) values.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 9 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Convective mass transfer between phases
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
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