Heat transfer rate equals thermal conductivity times temperature gradient divided.The formula is given by:
Where:
- q is the rate of heat transfer (in watts or joules per second)
- k is the thermal conductivity of the material (in watts per meter per kelvin)
- A is the cross-sectional area through which heat is transferred (in square meters)
- ΔT is the temperature difference across the material (in kelvin or degrees Celsius)
- L is the thickness of the material through which heat is transferred (in meters)