On a numerical model of a natural draught wet-cooling tower

• Autorzy: Klimanek A. , Białecki R.
• Języki publikacji: EN

Abstrakty

EN

In this paper the numerical model of a natural draught wet-cooling tower is presented. The model encompasses the tower and the surrounding environment. The analysis was performed using a commercial CFD code. The most important region of the heat and mass transfer is the fill. The process of heat and mass transfer is described by four ordinary differential equations that are solved by an external program. An original method called the Proper Orthogonal Decomposition (POD) has been applied to represent the heat and mass transfer in the fill. This technique allowed substantial reduction of computational time in the external program. The Euler-Euler model was used to calculate the multiphase flow in the rain zone. Results of the simulation are compared with data obtained experimentally and from other computational method. The comparison comprises a successful validation of the model.

Słowa kluczowe

EN

heat and mass transfer; Natural draught; numerical modelling; Wet-cooling tower

PL

chłodnia wody obiegowej; modelowanie numeryczne; przenikanie masy; wymiana ciepła

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2008
• Tom: Vol. 29, no. 4
• Strony: 63--72
• Opis fizyczny: Bibliogr. 9 poz.,rys., tab., wykr., wz.,

Twórcy

autor

Klimanek A.

autor

Białecki R.

• Silesian University of Technology, Institute of Thermal Technology, Konarskiego 22, 44-100 Gliwice, Poland

Bibliografia

• [1] KLIMANEK A., WĘCEL G., BIAŁECKI R.A., INGHAM D.B.: Numerical modelling of flow, heat and mass transfer in natural draft wet-cooling towers, Proc. of the Int. Conf. of Computational Methods, Hiroshima, 2007, 65 (full version on CD).
• [2] KLIMANEK A., OSTROWSKI Z., BIAŁECKI R.A.: Modelling of heat and mass flow in natural draught wet-cooling towers, Proc. of XIIIth Symposium on Heat and Mass Transfer, Koszalin-Darłówek, 2007, 41-48 (in Polish).
• [3] KLIMANEK A., BIAŁECKI R.A.: Modelling of flow, heat and mass transfer in natural draught wet-cooling towers, XVI Medzinarodna Vdecka Konferencja - Aplikacia Experimentalnych a Numerickych Metod v Mechanike Tekucin, Zilina-Terchova, Slovakia, 2008, Vol. 1, 73-78.
• [4] KLIMANEK A., OSTROWSKI Z., BIAŁECKI R.: Reduced order model of heat and mass transfer in wet cooling tower fills, Proc. of ECOS 2008. Cracow-Gliwice, Poland, 2008, Vol. 1, 361-370.
• [5] WILLIAMSON N., BEHNIA M., ARMFIELD S.: Numerical simulation of heat and mass transfer in a natural draft wet cooling tower, Proceedings of 4th ICCHMT, May 17-20, 2005, Paris-Cachan, France, 729-734.
• [6] ROTAR, M., SIROK, B., DROBNIC, B., NOVAK, M., DONIEVSKI, B.: A Numerical analysis of the local anomalies in a nNatural-draft cooling tower, heat transfer engineering, 2005, 26(9), 61-72.
• [7] KRÖGER D.: Air-Cooled Heat Exchangers and Cooling Towers, Penn Weil, Tulsa, USA, 2004.
• [8] Fluent Inc, Fluent 6.3 User's Guide, Fluent Ina, 2006.
• [9] STECHMAN A.: Way of Operation of Cooling Towers in Winter Conditions, PhD Thesis, Silesian University of Technology, 2006 (in Polish).