Question

Describe the physics associated with the concept of thermal resistance.

Answer 1

Thermal resistance:

Thermal resistance is the property which oppose the the heat transfer.It is the property for measurement of heat flow.

As we know that heat transfer take place from the high temperature to low temperature.Heat transfer Q given as

`Q=(\Delta T)/(R_(th))`

Where Δt is the temperature difference

`{R_(th)}` is the thermal resistance.

Connection:

1. Series connection

`R_(total)={R_1}+{R_2}+{R_1}----{R_n}`

2. Parallel connection

`(1)/(R_(total))=(1)/(R_1)+(1)/(R_2)+(1)/(R_3)-----(1)/(R_n)`