# Conductive Heat Transfer

Heat transfer by conduction

Thermal Elements

## Description

The Conductive Heat Transfer block represents a heat transfer by conduction between two layers of the same material. The transfer is governed by the Fourier law and is described with the following equation:

`$Q=k·\frac{A}{D}\left({T}_{A}-{T}_{B}\right)$`

where

 Q Heat flow k Material thermal conductivity A Area normal to the heat flow direction D Distance between layers (thickness of material) TA,TB Temperatures of the layers

Connections A and B are thermal conserving ports associated with material layers. The block positive direction is from port A to port B. This means that the heat flow is positive if it flows from A to B.

### Variables

Use the Variables tab in the block dialog box (or the Variables section in the block Property Inspector) to set the priority and initial target values for the block variables prior to simulation. For more information, see Set Priority and Initial Target for Block Variables.

## Parameters

Area

Area of heat transfer, normal to the heat flow direction. The default value is `0.0001` m^2.

Thickness

Thickness of material, that is, distance between layers. The default value is `0.1` m.

Thermal conductivity

Thermal conductivity of the material. The default value is `401` W/m/K.

## Ports

The block has the following ports:

`A`

Thermal conserving port associated with layer A.

`B`

Thermal conserving port associated with layer B.