كاربرد مدل برنامه ريزي حمل و نقل در صنايع قند و شكر استان فارس

Application of transportation programming model in sugar industries in Fars Province

The objective of this study was to develop a cost minimizing pattern for cube sugar and sugar transportation from production centers to refinement and storage centers and finally to distribution and consumption centers in Fars province. Producing centers are Marvdasht (27.3%), Eghlid (27.9%), Fasa (11.3%), Kavar (7.3%) and Mamasani (20.2%). Some of the province’s cube sugar and sugar is provided by import. The refinement and storage centers receiving the production of the mentioned producing centers are Marvdasht, Yasuj, Boosher, Eghlid, Abade, Lar, Abarghoo, Fasa, Tehran, Isfahan, Mamasani, Kazeroon, Istahban and Sepidan. The consumption centers also include all of Fars province townships. The transportation cost of the current transporting network amount to 56.55 billion Rials reducing by 23% in optimal solution. Of the figure, transportation network between producing and refinement and storage centers accounts for 71.1% and 28.9% of the total cost rise from transportation network between refinement and storage and distribution and consumption centers. The main changes in network between producing and refinement and storage centers relate to transporting paths of Marvdasht, Eqlid and Mamasani. In optimal pattern production of Marvdasht is allocated to Yasuj, Boosher and Abarghoo in addition to Marvdasht and Shiraz. In optimal pattern, Eqlid’s production instead of Shiraz’s refinement and storage centers is transported to Tehran and Isfahan ones. A part of Mamasani’s production being transported to Tehran and Isfahan in current network is allocated to Yasuj and Boosher. In the transportation network between refinement and storage and distribution and consumption centers the main difference of current and optimal solutions relates to refinement and storage of Shiraz, Eqlid and Abade.