单词 | Joule-Kelvin |
释义 | Joule-Kelvin|dʒuːl ˈkɛlvɪn| [See next.] = next.
1909Cent. Dict. Suppl. s.v. Effect, Joule-Kelvin effect. 1916I. 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. 1937M. 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. 1965W. C. Reynolds Thermodynamics viii. 216 Show that the Joule-Kelvin coefficient for a perfect gas is zero. |

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