Question

Thermal conductivity and thermal resistance relation

Answer 1

The reciprocal of thermal conductivity is thermal resistivity, usually expressed in kelvin-meters per watt (K⋅m⋅W−1). For a given thickness of a material, that particular construction'sthermal resistance and the reciprocal property, thermalconductance, can be calculated





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Answer 2

The thermal conductivity refers to a material with a thickness of 1 m under stable heat transfer conditions. The temperature difference between the two sides is 1 degree (K, ° C). In 1 second, the heat transferred through the area of 1 square meter is expressed by λ. It is watt/m·degree (W/m·K, where K can be replaced by °C). The thermal resistance is the resistance encountered by the heat in the heat flow path, reflecting the heat transfer capacity between the medium or medium, indicating the temperature rise caused by 1W heat, in °C/W or K/W. The temperature rise on the heat transfer path is obtained by multiplying the thermal power by the thermal resistance. A simple analogy can be used to explain the meaning of the thermal resistance. (wococarbide) The heat transfer is equivalent to the current, and the temperature difference is equivalent to the voltage.