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Survey of experimental data and assessment of calculation methods of properties for the air–water mixture
- Ji, Xiaoyan (author)
-
- Lu, X. (author)
- Nanjing University of Chemical Technology
-
- Yan, Jinyue (author)
- Kungliga tekniska högskolan, KTH
- (creator_code:org_t)
- 2003
- 2003
- English.
- In: Applied Thermal Engineering. - 1359-4311 .- 1873-5606. ; 23:17, s. 2213-2228
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Thermodynamic properties of the air-water mixture at elevated temperatures and pressures are of importance in the design and simulation of the advanced gas turbine systems with water addition. In this paper, comprehensive available experimental data and calculation methods for the air-water mixture were reviewed. It is found that the available experimental data are limited, and the determined temperature is within 75 °C. New experimental data are needed to supply in order to verify the model further. Three kinds of models (ideal model, ideal mixing model and real model) were used to calculate saturated vapor composition and enthalpy for the air-water mixture, and the calculated results of these models were compared with experimental data and each other. The comparison shows that for the calculation of saturated vapor composition, the reliable range of the ideal model and ideal mixing model is up to 10 bar. The real model is reliable over a wide temperature and pressure range, and the model proposed by Hyland and Wexler is the best one of today. However, the reliability of the Hyland and Wexler model approved by experimental data is only up to 75 °C and 50 bar, and it is necessary to propose a new predictive model based on the available experimental data to be used up to elevated temperatures and pressures. In the calculation of enthalpy, compared to the ideal model, the calculated results of the ideal mixing model are closer to those of real 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
- Air
- Humid air
- Method
- Model
- Properties
- Water
- Chemical engineering
- Kemiteknik
- Energiteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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