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.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Ohm's law — This article is about the law related to electricity. For other uses, see Ohm s acoustic law. V, I, and R, the parameters of Ohm s law. Ohm s law states that the current through a conductor between two points is directly proportional to the… …   Wikipedia

  • Thermal conduction — In heat transfer, conduction (or heat conduction) is a mode of transfer of energy within and between bodies of matter, due to a temperature gradient. Conduction means collisional and diffusive transfer of kinetic energy of particles of ponderable …   Wikipedia

  • Thermal management of high power LED — With the coming of energy saving era, high power light emitting diodes (LEDs) are promising to replace other technologies such as incandescent and fluorescent bulbs in signaling, solid state lighting, and vehicle headlight applications due to… …   Wikipedia

  • Thermal Via — Eine Leiterplatte (auch Leiterkarte, Platine) ist ein Träger aus isolierendem Material mit festhaftenden leitenden Verbindungen. Sie dient der mechanischen Befestigung und elektrischen Verbindung elektronischer Bauteile. Oben: Bestückungsseite… …   Deutsch Wikipedia

  • Thermal Vias — Eine Leiterplatte (auch Leiterkarte, Platine) ist ein Träger aus isolierendem Material mit festhaftenden leitenden Verbindungen. Sie dient der mechanischen Befestigung und elektrischen Verbindung elektronischer Bauteile. Oben: Bestückungsseite… …   Deutsch Wikipedia

  • rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

  • Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

  • Resistor — A typical axial lead resistor Type Passive Working principle Electrical resistance Invented Ge …   Wikipedia

  • crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …   Universalium

  • Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”