3. Consider a plane composite wall that is made of two materials of thermal conductivities ka = 205 W/m-K and k, = 46 W/m-K and thicknesses 8₂ = 5 cm and 8=2.5 cm. Material a adjoins a hot fluid at 150° for which ha = 12 W/m²-K and material bis in contact with a cold fluid at 30° for which hb = 23 W/m²-K. The wall is 2 m high and 2.5 m wide. i. Calculate the rate of heat transfer through the wall. ii. Calculate the overall heat transfer coefficient if the interface between the two walls has a thermal contact resistance of 8.5 × 10³ m² K/W.
3. Consider a plane composite wall that is made of two materials of thermal conductivities ka = 205 W/m-K and k, = 46 W/m-K and thicknesses 8₂ = 5 cm and 8=2.5 cm. Material a adjoins a hot fluid at 150° for which ha = 12 W/m²-K and material bis in contact with a cold fluid at 30° for which hb = 23 W/m²-K. The wall is 2 m high and 2.5 m wide. i. Calculate the rate of heat transfer through the wall. ii. Calculate the overall heat transfer coefficient if the interface between the two walls has a thermal contact resistance of 8.5 × 10³ m² K/W.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.44P: A composite refrigerator wall is composed of 5 cm of corkboard sandwiched between a 1.2-cm-thick...
Related questions
Question
give answer in written or microsoft word format
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 5 steps with 5 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
Principles of Heat Transfer (Activate Learning wi…
Mechanical Engineering
ISBN:
9781305387102
Author:
Kreith, Frank; Manglik, Raj M.
Publisher:
Cengage Learning
Principles of Heat Transfer (Activate Learning wi…
Mechanical Engineering
ISBN:
9781305387102
Author:
Kreith, Frank; Manglik, Raj M.
Publisher:
Cengage Learning