thermal ohm

thermal ohm
   an informal name for the SI unit of thermal resistance, kelvins per watt (K/W) or degrees Celsius per watt (°C/W). The thermal resistance of an insulating material, in thermal ohms, is the R-value (in SI units, equal to 0.1442 times the R-value in English units) divided by the thickness of the material, in meters. The name expresses an analogy between heat flow and electric current: the temperature difference (in kelvins or °C) corresponds to electric potential difference (in volts), while the heat flow rate (in watts, equal to joules per second) corresponds to electric current (in amperes). By Ohm's Law, the ratio of potential to current is the electric resistance (measured in ohms). Thus the corresponding ratio of temperature difference to heat flow rate is measured in thermal ohms.

Dictionary of units of measurement. 2015.

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