What is analogy in heat transfer?

The Reynolds Analogy is popularly known to relate turbulent momentum and heat transfer. That is because in a turbulent flow (in a pipe or in a boundary layer) the transport of momentum and the transport of heat largely depends on the same turbulent eddies: the velocity and the temperature profiles have the same shape.

What is meant by thermal resistance explain the electrical analogy for solving heat problems?

The analogy between both equations is obvious. The rate of heat transfer through a layer corresponds to the electric current, the thermal resistance corresponds to electrical resistance, and the temperature difference corresponds to voltage difference across the layer.

What are the analogy between heat and mass transfer?

Analogy between heat and mass transfer is proposed for the constant-rate period during non-convective drying process. A model is also presented for temperature-dependent mass-transfer coefficient in the constant-rate period during non-convective drying of water-based alumina suspension for tape casting.

How do you interpret thermal resistance?

Thermal resistance is defined as the ratio of the temperature difference between the two faces of a material to the rate of heat flow per unit area.

Which is an analog of conduction heat transfer?

There is an electrical analogy with conduction heat transfer that can be exploited in problem solving. The analog of is current, and the analog of the temperature difference, , is voltage difference. From this perspective the slab is a pure resistance to heat transfer and we can define (16..21) where , the thermal resistance.

Which is an analog of the thermal resistance?

The analog of is current, and the analog of the temperature difference, , is voltage difference. From this perspective the slab is a pure resistance to heat transfer and we can define (16..21) where , the thermal resistance. The thermal resistance increases as increases, as decreases, and as decreases.

How is the Reynolds analogy related to heat transfer?

To recap, there is an approximaterelation between skin friction (momentum flux to the wall) and heat transfer called the Reynolds analogy that provides a useful way to estimate heat transfer rates in situations in which the skin friction is known. The relation is expressed by or or

Is the slab a pure resistance to heat transfer?

There is an electrical analogy with conduction heat transfer that can be exploited in problem solving. The analog of is current, and the analog of the temperature difference, , is voltage difference. From this perspective the slab is a pure resistance to heat transfer and we can define