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Thermodynamic properties for humid gases from 298 to 573 K and up to 200 bar
Royal Institute of Technology, Sweden.
Mälardalen University, School of Sustainable Development of Society and Technology. Royal Institute of Technology, Sweden. (PRO)ORCID iD: 0000-0003-0300-0762
2006 (English)In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 26, no 2-3, p. 251-258Article in journal (Refereed) Published
Abstract [en]

For the needs of process design, the model proposed in our previous papers was extended to calculate the thermodynamic properties of humidity, heat capacity, molar volume, partial pressure of water vapour, enthalpy and entropy for humid gases (nitrogen, oxygen, air or a nitrogen-oxygen mixture). The comparison with other models from 300 to 473 K and I to 100 bar shows that the results calculated with different models are consistent within 50 bar and 400 K; out of this range, there is some difference. Meanwhile, mole ratios of nitrogen to oxygen in the saturated humid air were calculated from 323 to 523 K and 50 to 250 bar. It is found that the mole ratio of nitrogen to oxygen keeps almost constant, and the effect of the slight changes in the ratio of nitrogen to oxygen on the humidity, enthalpy and entropy of humid air is small enough to be neglected. Moreover, the enthalpy of dry air was predicted, and the comparison with other models again proved the reasonable assumptions and prediction capability of the new model. (c) 2005 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2006. Vol. 26, no 2-3, p. 251-258
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-1426DOI: 10.1016/j.applthermaleng.2005.05.005ISI: 000233062300015Scopus ID: 2-s2.0-27144513265OAI: oai:DiVA.org:mdh-1426DiVA, id: diva2:73643
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-05Bibliographically approved

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Yan, Jinyue

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