Logo
Home Study Material Contact Search
AI Chat FREE
  1. engineering
  2. mechanical engineering
  3. the composite walls of a building are made up of t

The composite walls of a building are made up of three materials. The inside layer of...

70.2K

Verified Solution

Question

Mechanical Engineering

The composite walls of a building are made up of threematerials. The inside layer of the walls is 1-cm thick wall board(kwb = 0.2 W/mK). The middle layer is 10 cm thick insulation (kI =0.06 W/mK) and the outside layer is 3 cm of wood (kw = 0.15 W/mK).The total wall area is 350 m2. The outside air temperature is -10oC and the inside air temperature is maintained at 20 oC. Theinside and outside average convective heat transfer coefficientsare 7 and 35 W/m2K, respectively. You are asked to: a. Sketch andlabel the thermal circuit diagram for the rate of heat transfer, q,from the inside of the room, through the composite walls and to theoutside. Evaluate all individual thermal resistances, the totalthermal resistance and the overall heat transfer coefficient. [10]b. Evaluate q. [2] c. Determine the unknown temperatures on bothsides of the insulation layer. [3] Hint: Neglect radiation, contactresistance and conduction in air. The walls are large enough sothat 1-dimensional conditions exist.

Answer & Explanation Solved by verified expert
4.0 Ratings (572 Votes)
    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Basic Math
1.2K views

Let the cardinal number of N, the set of all natural numbers, be א0. Prove that...

Biology
1.2K views

When GLP-1 is secreted in your body, what is the likely effect afterwards?Feeling full after...

Statistics
1.2K views

5 The histogram shows the distribution of age for runners in the Brooklyn New York...

Accounting
1.2K views

Chicago Company's cost of goods sold was $19,250. Its average merchandise inventory was $4,575. Its...

Accounting
1.2K views

Applying LCM, NeCo determines that as of December 31, 19x3 merchandise that originally cost $46,300...

Accounting
1.2K views

Please answer these MCQs questions about accounting. I need an accurate answer for each part...

Accounting
1.2K views

OP Mail - Emily Layman - Outlook X S Brightspace for Students - suny X...

Accounting
1.2K views

On September 12, Vander Company sold merchandise in the amount of $2,000 to Jepson Company,...

Accounting
1.2K views

Colson Corp. had $800 net income in 2021. The weighted average number of shares to...

Accounting
1.2K views

Find and report the equivalent uniform amount over 5 periods applying an interest rate of...

Accounting
1.2K views

Espresso Express operates a number of espresso coffee stands in busy suburban malls. The fixed...

Finance
1.2K views

Find the interest rates earned on each of the following. Round your answers to the...