Transfer of heat within thermally conductive body or between thermally contacted bodies due to temperature difference is known as Conductive Heat Transfer. You can use conductive heat transfer calculator to calculate conductive heat transfer in solid bodies. For more details, Read this article on Conduction Heat Transfer.

Conductive heat Transfer Formula

Conductive Heat transfer (Qc) = – K A dT/L


Qc = Conductive heat transfer per unit time in watt

A = cross section area in square meter

k = Material Thermal Conductivity (W/mK)

dT = Temperature Differential

L = Thickness/Length of the part in Meter

Conductive Heat Transfer Calculator

According to Fourier’s Law: Rate of conductive heat transfer is directly proportional to the contact area, material thermal conductivity, temperature difference and inversely proportional to the thickness.

Conductive Heat Transfer Problem Example

Question: Consider an copper flat plate of size 200 x 200 mm and thickness 100 mm. Temperature of the plate near heat source is 50 ºC. Whereas as cooler side its 20 ºC.  Thermal Conductivity of copper is 385 W/mK. Calculate the conductive heat Transfer? 

Answer: This is the example of real life problems that engineers face during product Design. This Problem can be solved by using a convection calculator or manually.

Temperature Difference =  50 – 20 = 30 ºC

Conductive Heat transfer Coefficient for Copper = 385 W/mK

Surface Area = 200 x 200 = 40000 mm² = 0.04 m²

Convective Heat Transfer = (385 x 0.04 x 30) / (0.1) = 4620 watt

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