 �ͼ����·����Ҿѡ�ѡ�ҵ�� ��ҹ������Ҿѡ�ѡ��㹵֡�Тͧ���С�����ä ������§ 2 ������ ����Ѻ��ҹ����ͧ�����ͧ����ɡóդ�ʹ�ص�����ö�ѡ�ѡ�ҵ������ �֡������ 8 ��� ��� 3 �֡��ǧ��ͤٳ ����ط� ��� 2, 3 �����Ҿѡ�ѡ�ҵ�����ͧ����ɢͧ�ء�֡ �е�ͧ�ͧ��ǧ˹�ҡѺ���˹�ҷ���Ѻ�Դ�ͺ�ͧ ���е֡ ����Ѻ����ͧ������˹�ҷ��������Ҵ����ҡ�� �Դ��ͷ�� �ӹѡ�ҹ����Ǩ��� ������ҹ��þ�Һ�� ˹���Կ�� �֡������ 8 ��� �Ըա�ê����Թ ��ê��������Թʴ �Դ��ͪ����Թ�����ѹ-���� ���ʶҹ��� �ѧ��� ������Ҫ��� �͡�����Ҫ��� ����Ѻ�����·������Ѻ�ѡ����ͼ����� �ç��Һ�ŨТ��Ѻ���Ф�Һ�ԡ���ѡ�ҷء�ѻ���� ����Ѻ��������Է�Ժѵ�Ŵ�������ѡ�Ҿ�Һ�ŵ�ҧ � �ҧ�ç��Һ���Թ�������Ŵ��� �¢�����ʴ��ѵ�Ŵ��� #Admin Drying of Paddy by Continuous Fluidized Bed Technique �����Ե ����� ��վ�ҷ��� Ornanong Sripawatakul �����Ҩ�������֡�� � �� ���ҵ� ����óķ��� � �����õ� ��Ѫ����ҡ� Prof Dr Somchart Soponronnarit Somkiat Prachayawarakorn ����ʶҺѹ ����Է���������վ�Ш�����Ҹ�����. �ѳ�Ե�Է����� King Mongkuts University of Technology. Bangkok (Thailand). Graduate School �дѺ��ԭ�������������´�Ң��Ԫ� �Է�ҹԾ�����Һѳ�Ե. ���ǡ�����ʵ�� (���ǡ��������) Master. Engineering (Food Engineering) �շ�診����֡�� 2536 ���Ѵ���(��) �ҹ�Ԩ�¹�����ѵ�ػ��ʧ�����͵�ͧ����֡�Ҥ����� ���ͧ���ͺ��駢������͡����ǧ��������٧���Ը� ����Դ䴫�ິ���ҧ������ͧ �¾Ԩ�óҵ���õ�ҧ � ����ռŵ���ѵ�ҡ�ü�Ե ����������ͧ��ѧ�ҹ ��Фس�Ҿ �ͧ�������͡ ��оѲ��Ẻ���ͧ�ҧ��Ե��ʵ�����ͷӹ�� �ѵ�ҡ��ͺ��� ������ѧ�ҹ �ҡ��÷��ͧ����س����Ԣͧ �ҡ�� 115 ͧ�������� ���س������٧�ش���������͡ �ѧ���դس�Ҿ������ ��Ф������������鹢ͧ�������͡ 30% �ҵðҹ��駾���� �ѵ�ҡ��ͺ��駢������͡������� �Ѻ�ѵ�ҡ����Ţͧ�ҡ�Ȩ���� (�ѵ����ǹ�����ҧ�ѵ�ҡ�� ��Ţͧ�ҡ�Ȩ���е�������駢ͧ hold up �ͧ�������͡) ����س����Ԣͧ�ҡ�� ����ѵ�ҡ����Ţͧ�ҡ�Ȩ���е�� ��������ͧ��ѧ�ҹ��� ����ѵ�ҡ����ع���¹�ҡ�ȡ�Ѻ ��Ф����٧�ͧ��鹢������͡������鹨з����������ͧ ��ѧ�ҹ���ŧ �����ͺ��駢������͡����ժ�鹵�ӡ��� 22% �ҵ�Ұҹ������ͧ�ҡ�з���������ѧ������դس�Ҿ ��� Ẻ���ͧ�ҧ��Ե��ʵ������ö�ӹ���ѵ�ҡ��ͺ��� ��о�ѧ�ҹ��վ������ ����֡�����Ƿҧ���ͺ��駷��������� ����Ẻ ���ͧ�ҧ��Ե��ʵ�� ���յ���÷��ӡ���֡�Ҥ�� �����٧ weir �ѵ�ҡ����Ũ���Тͧ�ҡ�� ����ѵ�ҡ����ع���¹��Ѻ �����س�����㹡��ͺ��� 115 ͧ�������� ����� �ش����������㹡��ͺ��駤�� �������٧�ͧ weir 10 cm �ѵ�ҡ����Ţͧ�ҡ�Ȩ���� 0.043 kg/s-kg dry matter �ѵ�ҡ����ع���¹��Ѻ�ͧ�ҡ�� 80% �з����������ͧ ��ѧ�ҹ������� 7.9 MJ/kg-water ���繾�ѧ�ҹ俿�� 2.46 MJ/kg-water ��о�ѧ�ҹ������ 5.44 MJ/kg-water �դ�������㹡��ͺ��� 㹡óշ�������ѹ���� ������ԧ 2.06 �ҷ/kg water ��������㹡�ô��Թ��� 1.07 �ҷ/kg water 㹡óշ�������ѹ������������ԧ 2.60 �ҷ/kg water ���繤�������㹡�����ҧ����ͧ 0.99 �ҷ/kg water ��������㹡�ô��Թ��� 1.61 �ҷ/kg water ���Ѵ���(English) The objective of this reserch is to pursue the feasibility study of high moisture paddy drying at high temperature by using continuous fluidization technique. The effect of variables on drying capacity, energy consumption and quality of paddy was considered. The mathematical model was developed to find the optimum condition of drying by considering drying rate and energy consumption. Experimental results with paddy having initial moisture content of 30 % dry basis at 115 degree C (maximum drying air tempareture if paddy quality were maintained) showed that the specific air flow rate (ratio of air flow rate to dry mass of paddy hold up) and drying air temperature affected significantly the drying rate of paddy. Energy consumption was found to decrease with the specific air flow rate, but it decreased when the weir height and the fraction or air recycled were increased. Final moisture content should be limited to 22 % dry basis in order to prevent successive broken grain. The mathematical model was found to be in good agreement with the experimental drying rate. The determination of appropriate drying strategy was done by using the mathematical model. The variables which were studied were weir height, specific air flow rate and the fraction of recycled air. The drying temperature is fixed at 115 degree C. The results of simulation showed that the appropriate drying strategy was obtained at the weir height of 10 cm, the specific air flow rate of 0.043 kg/s-kg dry matter and the fraction of air recycled of 80 %. The primary energy consumption and the total cost of drying are 7.9 MJ/kg water evap. (electrical energy = 2.46 MJ/kg water evap., heat = 5.44 MJ/kg water evap.) and 2.05 bath/kg water evap. (fix cost 0.99 bath/kg water evap., operating cost 1.06 bath/kg water evap.), respectively. ���ҷ������¹�Է�ҹԾ��� �ӹǹ˹�Ңͧ�Է�ҹԾ��� ISBN ʶҹ���Ѵ���Է�ҹԾ��� ���Ӥѭ Paddy drying, Mathematical model, Fluidization, Energy consumption, Drying strategy, Quality, ���ͺ��駢������͡, ����Դ䴫�ິ, Ẻ���ͧ�ҧ ��Ե��ʵ��, �Ƿҧ���ͺ���, �س�Ҿ �Է�ҹԾ���������Ǣ�ͧ |
ค่าคลอดโรงพยาบาลมหาราชนครราชสีมา
กระทู้ที่เกี่ยวข้อง
ลิขสิทธิ์ © 2024 ihoctot Inc.
