عنوان مقاله [English]
The purpose of this study was to compare the performance of cellulosic pad made of kraft hand sheet papers and commercial cellulosic pads (CELdek 50×90 and CELdek 70×90). Hand sheet papers were made by the use of a large hand sheet maker at available at pulp and paper laboratory of Wood and Paper Science and Technology department at the University of Tehran and then corrugated with B flute size in Pars carton factory. After cutting, corrugated papers were cross-laminated by kraft adhesive and with 90 degree flute angle. Then, pads were soaked in NS-88 resin and dried at 35±2 oC. Cooling efficiency and water consumption of experiments were measured as a function of air velocity. Cellulosic pads were tested in a wind tunnel at three different levels of air velocity (1.8, 2.25 and 2.67 ms-1). The results showed that cellulosic pads made of kraft hand sheet papers had the highest efficiency compared to the commercial cellulosic pads (CELdek 50×90 and CELdek 70×90). It has also been found that by increasing the air velocity, the cooling efficiency decreased and water consumption increased.