Article: Review the allocation of production lines in shifts with minimising energy costs approach in Tehran Pegah Co. Journal: International Journal of Operational Research (IJOR) 2014 Vol.19 No.1 pp.68 - 77 Abstract: Today, reducing production costs play an important role in marketing competition. Energy costs for product process and manufacturing is the major concern of production expenses. In this study, the production lines were allocated in shifts with minimum energy costs in Tehran Pegah Co. For this purpose, all data about energy consumption, production levels and staffs in Shahid Saemi factory of Tehran Pegah Co. were collected through interviews, documents, records and observations and considered as statistical sample. After extracting the costs of production lines, an integer linear programming model with an additional fixed cost to minimise the energy costs was designed for the factory. By solving this model, a weekly optimal production plan was extracted which tends to be more economical at the same production levels in every week of the first and second semesters by saving 4,314,110 and 44,559,712 Rials, respectively. Inderscience Publishers - linking academia, business and industry through research

Title: Review the allocation of production lines in shifts with minimising energy costs approach in Tehran Pegah Co.

Authors: Morteza Hashemi; Sedaghat Shahmorad-Moghanloo; Davood Behboudi

Addresses: Industrial Engineering, Tabriz ALGHADIR Non-Governmental and Private Higher Education Institution, End of Gholha street, Vilashahr, Elgholi Road, Tabriz, Iran ' Mathematical Department, Faculty of Mathematical Sciences, University of Tabriz, 29 Bahman Boulevard, Tabriz, Iran ' Economics Department, Faculty of Humanities and Social Science, University of Tabriz, 29 Bahman Boulevard, Tabriz, Iran

Abstract: Today, reducing production costs play an important role in marketing competition. Energy costs for product process and manufacturing is the major concern of production expenses. In this study, the production lines were allocated in shifts with minimum energy costs in Tehran Pegah Co. For this purpose, all data about energy consumption, production levels and staffs in Shahid Saemi factory of Tehran Pegah Co. were collected through interviews, documents, records and observations and considered as statistical sample. After extracting the costs of production lines, an integer linear programming model with an additional fixed cost to minimise the energy costs was designed for the factory. By solving this model, a weekly optimal production plan was extracted which tends to be more economical at the same production levels in every week of the first and second semesters by saving 4,314,110 and 44,559,712 Rials, respectively.

Keywords: energy carriers; production lines; mathematical programming; cost minimisation; shifts; optimisation modelling; production costs; energy costs; Iran; energy consumption; production levels; employees; production planning; case study.

DOI: 10.1504/IJOR.2014.057847

International Journal of Operational Research, 2014 Vol.19 No.1, pp.68 - 77

Received: 20 Apr 2012
Accepted: 31 Jul 2012
Published online: 17 Jun 2014 *

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Title: Review the allocation of production lines in shifts with minimising energy costs approach in Tehran Pegah Co.

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