Use the following equation to calculate the radiation heat transfer from an extruded (finned) heat sink.
Where:
Q = Radiation Nf = Number of fins heat sink has Ts = Surface temperature of the heat sink TA = Ambient Temperature = Apparent Emissitivity
( Apparent Emissitivity) is derived from the heat sink area and surface emittance.
Graph of apparent emissivity of 0.08
Graph of apparent emissivity of 0.8
References: "Thermal Radiation from Finned Heat Sinks" Samuel Rea, S.E. West
Directory | Standard | Heat | Heat Exchanger | Temperature | Pressure | Corrosion | Hardness | Surface | Properties | Select Stainless Steel | Contact US
= Apparent Emissitivity
