Answered: ) Assuming perfect thermal contact…

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

See similar textbooks

Related questions

Concept explainers

Question

a) Assuming perfect thermal contact between the layers of the composite walls, draw the typical temperature distribution across the layers and determine the heat energy gained per hour through all 4 walls of the room with a total surface area of 20 m2 . What does this heat energy represent in terms of the refrigeration system of the cold room?

b) Without any calculations, how would you expect the internal and external air temperatures to be relative to the wall surface temperatures? Explain your answer.

c) How do you expect the heat gain calculated in question 1a) above to change if you take into account the floor and the ceiling of the cold room? Explain your answer

An industrial cold room has four 200 mm thick walls made of concrete. The walls are
insulated on the outside with a layer of foam 60 mm thick. Cladding with a thickness of
15 mm protects the foam on the outside from the elements. The composite wall surface
temperatures are −3 °C on the inside and 18 °C on the outside of the room respectively.
The thermal conductivities of concrete, foam and cladding are 0.75, 0.35 and 0.5 W/m K
respectively.

Expert Solution

Step by step

Solved in 5 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

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.

Similar questions