Ceramics-Silikáty 53 (1) 25-30 (2009)

COOLING OF THE FIBRES IN MINERAL WOOL PRODUCED BY A DOUBLE-DISC SPINNING MACHINE

B. Blagojevič, B. Širok, M. Hočevar

The quality of mineral wool products is affected by the magnitude of fibre thickness. For this reason the paper presents a mathematical model of the cooling of the mineral wool fibres of different thickness on the envelope trajectory of two phase fibre and air flow. On the basis of the results which were obtained by numerical simulations we compared the numerical and experimental results. Experimental results were obtained by using the infra red camera. The results show good agreement between measured surface average fibre temperature in the two phase jet and the numerical results. The numerical model considers also the temperature dependence of thermo-physical properties of the air and mineral wool fibres.

Keywords: Fiber of mineral wool, Cooling, Numerical model, IR-camera