Question

a wall is made with three layers of material. The tempurature on one side of the...


a wall is made with three layers of material. The tempurature on one side of the wall is 30 degrees celcius and on the other side is -15 degrees celcius. Starting at the warm side, the first material has a thickness L1 and the thermal conductivity k1, the second material has thickness L2= 0.7L1 and thermal conductivity k2=0.9k1, and tge third material (one the cold side of the wall) has L3= 0.35L1 and thermal conductivity k3=0.8k1. What is the temperature difference across layer 2?
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a warehouse, a cold room that is maintained at 10oC has a wall made of...
In a warehouse, a cold room that is maintained at 10oC has a wall made of two layers of materials. The inner layer has a thickness of 2 cm and a thermal conductivity of 0.1 W/mK. The outer layer, which is 4 cm thick, has a thermal conductivity of 0.04 W/mK. The temperature of the outside ambient is 30oC . The convective heat transfer coefficients on the outside and the inside of the wall are 40 W/m2K and 20 W/m2K...
It is a question about the thermal heat transfer problem. A wall consists of 2 layers...
It is a question about the thermal heat transfer problem. A wall consists of 2 layers in parallel: A=3m^2 and B=7m^2. The indoor air temperature and outdoor air temperature are 20C and 10C, respectively. The rate of heat flow through the whole wall is not to exceed 50W by adding a thermal insulation on the wall ( on both A and B), What is the required thickness of the thermal insulation layer? The thermal conductivity of the thermal insulation layer...
The initial temperature distribution across a wall with a thickness of 60 cm is described with...
The initial temperature distribution across a wall with a thickness of 60 cm is described with the following function: T(x) = -250x+100x2+ 20x3/ 2x where T is temperature in degrees Celsius and x is the coordinate in meters. The wall has a thermal conductivity of 2.5 W cm-1 K-1. (i)        On a unit surface area basis, determine the heat flux into the wall on the left face. (ii)       On a unit surface area basis, determine the heat flux out of...
The wall of an industrial furnace is constructed from a fireclay brick layer which is covered...
The wall of an industrial furnace is constructed from a fireclay brick layer which is covered with another layer of ordinary brick. The outer surface wall temperature has a steady-state temperature of 110 °C when the ambient air has a temperature of 20°C. Heat is lost from the outer surface wall via convection and radiation. The internal furnace wall has a surface temperature of 500 DegreeC. Convection heat transfer coefficient between outer wall and air: 5 W/m2K Stefan-Boltzmann constant σ:...
The wall of an industrial furnace is constructed from unknown material with 0.5 m . Measurements...
The wall of an industrial furnace is constructed from unknown material with 0.5 m . Measurements made during steady state operation reveal temperature at the inner and outer surface, respectively. What is the rate of heat loss through a wall that is 2 m X 3.5 m on a side Abstract: Introduction: Results Material A Material B Material C ∆? K q ∆? K q ∆? K q    Each box has three rows And Graphic representation for x axis...
Chapter 17: Wall Finish Matching Match terms to their definitions. Write the corresponding letters on the...
Chapter 17: Wall Finish Matching Match terms to their definitions. Write the corresponding letters on the blanks. Not all terms will be used. Chapter 17: Wall Finish Matching Match terms to their definitions. Write the corresponding letters on the blanks. Not all terms will be used. 1. the best appearing side of a piece of wood or the side that is exposed when installed a. backing b. eased edge 2. a wall finish applied partway up the wall from the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT