Question

A very good insulator has an R-value of 29. The material's heat transfer coefficient is

A 14.5


b. 0.034


c. 8.497


d.29

Answer 1

b. 0.034

Step-by-step explanation:

The heat transfer coefficient of a material (U-value) is equal to the reciprocal of its R-value, therefore:

`U = (1)/(R)`

where

R is the R-value of the material

For the insulator in this problem,

R = 29

Substituting into the equation, we find the heat transfer coefficient:

`U=(1)/(29)=0.034`