Naslov
Estimation of humid air properties by moving total least squares m ethod

Autori
Tomas, Srećko ; Jukić, Dragan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 7th International Conference on Operational Research / Aganović, Ibrahim ; Hunjak, Tihomir ; Scitovski, Rudolf - Osijek : Hrvatsko društvo održavatelja, 1999, 91-98

Skup
7th International Conference on Operational Research - KOI'98

Mjesto i datum
Rovinj, Hrvatska, 30.09.1998. - 02.10.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
convection dryig ; humid air ; moving total least squares ; local and global approximant

Sažetak
For the estimation of physical and thermodynamic pro-per-ti-es of humid air in the whole nonsaturated region and for the chosen temperature interval it is necessary to know the saturated pressure $p_e$ of water vapour, specific heat $c_{;p, da};$ of dry air and specific heat $c_{;p, wv};$ of water vapour at constant pressure in dependence of temperature $vartheta$. Since these dependencies are not known explicitly, on the basis of experimental data they can be interpolated or approximated by various functions. In this paper we suggest a method for approximating the unknown functions $p_e, c_{;p, da};$ and $c_{;p, wv};$. Our approach is based on smoothing the data by using the moving total least squares method. In this way it is taken into consideration that errors can occur in all data coordinates. The method is illustrated on several examples.

Izvorni jezik
Engleski

Znanstvena područja
Matematika

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