Experimental determination of correlations for mean heat transfer coefficients in plate fin and tube heat exchanger / Dawid Taler // Archiwum Termodynamiki = Archives of Thermodynamics. – 2012, Vol. ... więcej

Experimental determination of correlations for mean heat transfer coefficients in plate fin and tube heat exchanger / Dawid Taler // Archiwum Termodynamiki = Archives of Thermodynamics. – 2012, Vol. 33, No. 3, s. 3-26 : rys., tab., wykr. – Bibliogr. 22 poz., Abstr. – doi: 10.2478/v10173-012-0014-z. – ISSN 1231-0956

This paper presents a numerical method for determining heat transfer coefficients in cross-flow heat exchangers with extended heat exchange surfaces. Coefficients in the correlations defining heat transfer ... więcej

This paper presents a numerical method for determining heat transfer coefficients in cross-flow heat exchangers with extended heat exchange surfaces. Coefficients in the correlations defining heat transfer on the liquid- and air-side were determined using a nonlinear regression method. Correlation coefficients were determined from the condition that the sum of squared liquid and air temperatures differences at the heat exchanger outlet, obtained by measurements and those calculated, achieced minimum. Minimum of the sum of the squares was found using the Levenberg-Marquardt method. The uncertainty in estimated parameters was determined using the error propagation rule by Gauss. The outlet temperature of the liquid and air leaving the heat exchanger was calculated using the analytical model of the heat exchanger.