تقييم حالة جدران أفران التجفيف باستخدام طريقة التصوير الحراري

Abstract EN

The drying ovens are used to dry the cardboard manufactured by recycling of waste paper, those oven are built from double jacket stainless steel walls with fiber glass shell, to ensure adequate insulation, thereby reducing to a minimum the heat exchange boundary between inside the oven and the surrounding medium, And lead pose any defects within the wall of the oven (corrosion in stainless steel or not to tighten the doors of cleaning and maintenance of the oven or thinning of the lining of glass wool insulation or low efficiency of its insulation) layers, to increase the size of the heat exchange between the interior of the oven and the surrounding medium, Which will lead to large thermal Ziaat reflected in the increase of fuel consumption to raise the internal oven temperature to the desired degree of hand, and the instability of this class which will require drying the highest cutting problem of cardboard and paste time and thus lower productivity drying oven on the other hand, it is an assessment of the case of the walls of the oven great importance, in order to ensure the ability of these walls to achieve the desired insulation, and thus achieve the planned production of the furnace, and within the nominal fuel consumption level.

This paper presents a procedure to evaluate the insulation efficiency of the drying oven walls using thermal imaging method, because of its advantages compared to other nondestructive evaluation methods such as: overall assessment of the body, and quickly and effectively the largest and up to relatively low cost