A liquid food flows in the inner pipe (internal diameter-8 cm) of a double-pipe heat exchanger. The liquid food (p=1200 kg/m and C,-4 kJ/kgK) flows at 0.055 m/min and enters the heat exchanger at 6°C and exits at 38°C. In the annular section, water at 96°C enters the heat exchanger and flows countercurrently at an average flow rate of 1 kg/s (average Cp= 4.18 kJ/kgK). a) Sketch a graph showing the temperature profile of the heating water and quid food through the heat exchanger. Clearly label the two streams and draw arrows to indicate the flow directions of liquid food and water. i) ii) Calculate the mass flow rate (kg/s) of the liquid food. ii) Me sure the temperature (°C) of the exiting water stream. iv) Calculate the log-mean temperature difference for this system. Estimate the length (m) of this pipe heat exchanger that needs to be constructed in order to achieve an overall heat transfer coefficient of 2.5 W/m2K.
A liquid food flows in the inner pipe (internal diameter-8 cm) of a double-pipe heat exchanger. The liquid food (p=1200 kg/m and C,-4 kJ/kgK) flows at 0.055 m/min and enters the heat exchanger at 6°C and exits at 38°C. In the annular section, water at 96°C enters the heat exchanger and flows countercurrently at an average flow rate of 1 kg/s (average Cp= 4.18 kJ/kgK). a) Sketch a graph showing the temperature profile of the heating water and quid food through the heat exchanger. Clearly label the two streams and draw arrows to indicate the flow directions of liquid food and water. i) ii) Calculate the mass flow rate (kg/s) of the liquid food. ii) Me sure the temperature (°C) of the exiting water stream. iv) Calculate the log-mean temperature difference for this system. Estimate the length (m) of this pipe heat exchanger that needs to be constructed in order to achieve an overall heat transfer coefficient of 2.5 W/m2K.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Concept explainers
Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
100%
Transcribed Image Text:A liquid food flows in the inner pipe (internal diameter-8 cm) of a double-pipe heat
exchanger. The liquid food (p=1200 kg/m and C,-4 kJ/kgK) flows at 0.055 m/min and
enters the heat exchanger at 6°C and exits at 38°C. In the annular section, water at
96°C enters the heat exchanger and flows countercurrently at an average flow rate of 1
kg/s (average Cp= 4.18 kJ/kgK).
a)
Sketch a graph showing the temperature profile of the heating water and quid
food through the heat exchanger. Clearly label the two streams and draw arrows
to indicate the flow directions of liquid food and water.
i)
ii)
Calculate the mass flow rate (kg/s) of the liquid food.
ii)
Me
sure the temperature (°C) of the exiting water stream.
iv)
Calculate the log-mean temperature difference for this system.
Estimate the length (m) of this pipe heat exchanger that needs to be constructed
in order to achieve an overall heat transfer coefficient of 2.5 W/m2K.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY