You are designing a new eco-friendly thermal coffee mug. It is shaped like a small globe to minimize surface area, which is only about O.04m^2. You usetwo 0.003m layers of recyclable PETE which has a thermal conductivity, k, of 0.2W/mK around a 0.01m layer of dead air, with a thermal conductivity of0.026W/mK. Since this is for hot coffee, use a temperature difference of 40K. Q = Ax (T2-T1) / (R1 + R2 + etc) R =X/k.A)what is the R-value for each of the two PETE layers?B) what is the R-value for the dead air?C) Which layer is the best insulator?D. What is the heat loss through the surface in Watts?

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You are designing a new eco-friendly thermal coffee mug. It is shaped like a small globe to minimize surface area, which is only about 0.04m^2. Your two 0.003m layers of recyclable PETE which has a thermal conductivity, k, of 0.2W/mK around a 0.01m layer of dead air, with a thermal conductivity 0.026W/mK. Since this is for hot coffee, use a temperature difference of 40K. Q = Ax (T2-T1) / (R1 + R2 + etc) R =x/k. A)what is the R-value for each of the two PETE layers? B) what is the R-value for the dead air? C) Which layer is the best insulator? D. What is the heat loss through the surface in Watts?

You are designing a new eco-friendly thermal coffee mug. It is shaped like a small globe to minimize surface area, which is only about 0.04m^2. Your two 0.003m layers of recyclable PETE which has a thermal conductivity, k, of 0.2W/mK around a 0.01m layer of dead air, with a thermal conductivity 0.026W/mK. Since this is for hot coffee, use a temperature difference of 40K. Q = Ax (T2-T1) / (R1 + R2 + etc) R =x/k. A)what is the R-value for each of the two PETE layers? B) what is the R-value for the dead air? C) Which layer is the best insulator? D. What is the heat loss through the surface in Watts?

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

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