Direct determinations of the effect of pressure on the enthalpy of nitrogen
Abstract
The isothermal throttling (Eucken) coefficient ϕ of nitrogen has been measured in a new apparatus. Measurements were made at 173.7, 273.5, and 367.2° K at pressures from 7 to 135 atm. The results are compared with other direct measurements, with Joule-Thomson data, and with pressure-volume-temperature data.