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Thermodynamic properties for humid gases from 298 to 573 K and up to 200 bar
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- Ji, Xiaoyan (author)
- KTH,Kemiteknik,Department of Chemical Engineering and Technology/Energy Processes, Royal Institute of Technology, Stockholm, Sweden
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- Yan, Jinyue (author)
- Mälardalens högskola,KTH,Kemiteknik,Akademin för hållbar samhälls- och teknikutveckling,Department of Chemical Engineering and Technology/Energy Processes, Royal Institute of Technology, Stockholm, Sweden; Department of Public Technology, Mälardalen University, Västerås, Sweden,PRO
- (creator_code:org_t)
- Elsevier BV, 2006
- 2006
- English.
- In: Applied Thermal Engineering. - : Elsevier BV. - 1359-4311 .- 1873-5606. ; 26:2-3, s. 251-258
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- equation of state
- property
- humid gas
- nitrogen
- oxygen
- air
- Chemical engineering
- Kemiteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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