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Measurements of the isobaric enthalpy increment and the isenthalpic Joule–Thomson effect of (methane + water) and (methane + ethane + water)

✍ Scribed by C. Day; M. Stephan; L.R. Oellrich

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
260 KB
Volume
29
Category
Article
ISSN
0021-9614

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✦ Synopsis

The direct measurement of caloric properties of model systems for natural gas is of great technical interest. Therefore, integral Joule-Thomson effects and isobaric enthalpy increments have been measured for two (methane + ethane + water) compositions and three (methane + water) compositions. The flow calorimeter facility used is described. The temperature range from near mixture dew point temperature to T = 600 K and pressures up to 7 MPa is covered. Expansion took place to p = 0.17 MPa. The investigated compositions of {xC2H6 + yH2O + (1 -x -y)CH4} were (x = 0.07, y = 0.15) and (x = 0.2, y = 0.2); and of {yH2O + (1 -y)CH4} y = (0.1, 0.2, and 0.4). The measurement results have been correlated and the residual and total enthalpy functions have been derived from them.

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