Heat transfer in thin porous fibrous material: mathematical modelling and experimental validation using active thermography

• Autorzy: Banerjee D. , Zhao S , Schabel S.
• Języki publikacji: EN

Abstrakty

EN

This paper deals with the modelling of the heat transfer process in a thin porous fibrous material such as a paper sheet when it is subjected to an incident heat flux introduced by a laser beam. A mathematical model based on the control volume principle is developed for numerical estimation of radial temperature distribution which is validated experimentally by infrared thermography. Here the heat flux is introduced by a CO₂ laser beam of 10.6 μm wavelength and an infrared image sequence is recorded as a function of time with a high resolution infrared camera. The preliminary validation results indicate that the simulation model can predict the transient development of sheet temperature very accurately under the specified heating conditions. The model can enhance our understanding and insights of the heat transfer process in such media, which is of great interest for many drying and thermal applications. Though the application shown here is on a 0.1 mm thick paper sheet, the model can be extended to any thin porous fibrous media such as textiles and nonwovens.

Słowa kluczowe

EN

heat transfer model; infrared thermography; control volumes; convection coefficient; drying

PL

model wymiany ciepła; termografia w podczerwieni; współczynnik konwekcji; suszenie

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2010
• Tom: Vol. 10, no. 4
• Strony: 95--99
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Banerjee D.

• Panipat Institute of Engineering & Technology, 70 Km Milestone, G.T. Road, Samalkha, Panipat, India

autor

Zhao S

• Tianjin Univ. of Sci. & Technol., Tianjin Key Lab Pulp & Paper, Tianjin 300457, P. R. China

autor

Schabel S.

• Fachgebietes Papierfabrikation und Mechanische Verfahrenstechnik, Alexanderstrasse 8, 64287, Technische Universität Darmstadt, Germany

Bibliografia

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