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单词 joule-kelvin
释义

Joule-Kelvinn.

Brit. /ˌdʒuːlˈkɛlvɪn/, U.S. /ˌdʒulˈkɛlvən/
Etymology: See Joule-Thomson n.
= Joule-Thomson n.
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the world > matter > chemistry > physical chemistry > gaseous phase > [noun] > gas > properties > Joule-Kelvin
Joule-Thomson1899
Joule-Kelvin1909
1909 Cent. Dict. Suppl. at Effect Joule-Kelvin effect.
1916 I. B. Hart Student's Heat xvi. 320 The liquefaction of hydrogen is achieved as a result of the fact that at 200 atmospheres and a temperature of −200° C. the Joule-Kelvin effect changes from a heating to a cooling.
1937 M. W. Zemansky Heat & Thermodynamics xiv. 246 One of the most important commercial applications of the Joule-Kelvin effect involves the transition of a liquid at room temperature and at high pressure (15 to 20 atm) into a mixture of liquid and vapor at a temperature about 30°C colder.
1965 W. C. Reynolds Thermodynamics viii. 216 Show that the Joule-Kelvin coefficient for a perfect gas is zero.
This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2022).
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n.1909
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