2026-04-27T20:18:54Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/823322026-03-20T11:58:18Zcom_10324_1170com_10324_931com_10324_894col_10324_1367

Leusmann, Yvonne Klink, Sebastian Vega Maza, David Richter, Markus Dew-point measurements were performed for hydrogen-rich binary mixtures with hydrocarbon mole fractions of 0.09995 C3H8, 0.1499 C3H8, 0.0513 n-C4H10, and 0.09888 n-C4H10 using a modified microwave re-entrant cavity apparatus. Isochoric measurements were conducted in the temperature range of (256 to 286) K with pressures up to 6.8 MPa and 2.0 MPa for mixtures containing propane and n-butane, respectively. The combined expanded uncertainties (k = 2) in dew-point temperature and pressure were estimated to be between (0.35 and 2.0) K and (0.0011 and 0.030) MPa. The agreement with predictions of the GERG-2008 equation of state is within 5.5%. However, better agreement with predicted values was achieved using a cubic equation recently developed in-house. Moreover, experiments with short- and long-term exposure of pressure sensors to hydrogen have shown that pressure measurement, and thus the uncertainty, can be affected; further investigation on this matter is therefore inevitable to improve hydrogen thermophysical property data. 2026-01-29 2026-01-29 2024 info:eu-repo/semantics/article Fuel, 2024, vol. 377, p. 132583-132583 0016-2361 https://uvadoc.uva.es/handle/10324/82332 10.1016/j.fuel.2024.132583 132583 Fuel 377 spa https://www.sciencedirect.com/science/article/pii/S0016236124017320?via%3Dihub info:eu-repo/semantics/openAccess Elsevier