Transient inverse heat transfer problem in control of plate fin and tube heat exchangers

• Autorzy: Taler D.
• Języki publikacji: EN

Abstrakty

EN

A transient inverse heat transfer problem encountered in control of fluid temperature or heat transfer rate in a plate fin and tube heat exchanger was solved. The objective of the process control is to adjust the speed of fan rotation, measured in number of fan revolutions per minute, so that the water temperature at the heat exchanger outlet is equal to a time-dependent target value (setpoint). The least squares method in conjunction with the first order regularization method was used for sequential determining the number of revolutions per minute. Future time steps are used to stabilize the inverse problem for small time steps. The transient temperature of the water at the outlet of the heat exchanger was calculated at every iteration step using a numerical mathematical model of the heat exchanger. The technique developed in the paper was verified by comparing the calculated and measured number of the fan revolutions. The discrepancies between the calculated and measured revolution numbers are small.

Słowa kluczowe

EN

heat exchanger; inverse heat transfer problem; mathematical modeling; temperature control; thermal measurements

PL

modelowanie matematyczne; pomiary termiczne; regulacja temperatury; wymiana ciepła; wymiennik ciepła

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2008
• Tom: Vol. 29, no. 4
• Strony: 185--194
• Opis fizyczny: Bibliogr. 6 poz.,rys., tab., wz.,

Twórcy

autor

Taler D.

• Katedra Maszyn i Urządzeń Energetycznych Wydział Inżynierii Mechanicznej i Robotyki Akademii Górniczo-Hutniczej w Krakowie,

Bibliografia

• 1. KRAUS A. D., AZIZ A., WELTY J.: Extended Surface Heat Transfer, John Wiley & Sons, New York 2001.
• 2. HESSEDLGREAVES J. E.: Compact Heat Exchangers, Selection, Design and Operation, Pergamon, Oxford 2001.
• 3. WOODBURY K. A, (EDITOR).: Inverse Engineering Handbook, CRC Press, Boca Raton 2003.
• 4. TALER D.: Dynamic response of a cross-flow tube heat exchanger, Chemical and Process Engineering, Vol. 27, 2006, 1053-1071.
• 5. TALER D.: Numerical and experimental analysis of transient heat transfer in compact tube- in-plate heat exchangers, Proc. of the XIII Conf. on Heat and Mass Transfer, Koszalin-Darłówko, Poland, 2007, Vol. II, 999-1008.
• 6. TALER D.: Measurement of Pressure, Velocity and Flow Rate of Fluid, Publishing House of University of Science and Technology (AGH), Cracow 2006 (in Polish).