ENERGY CONSERVATION MANAGEMENT FOR PLASTIC RESIN MANUFACTURERS

Abstract

This research studies energy conservation measures in plastic resin manufacturing to analyze and prioritize the energy conservation measures by using the payback period as a criterion. The energy conservation measures used in this research were collected from energy management reports which have 47 energy conservation measures from 17 plastic resin manufacturers. The energy conservation measures were classified into 5 systems namely lighting, air conditioning, air compressor, production process and steam. Root Cause Analysis was applied to identify energy wastes and Value Engineering was used to analyze reduction of energy consumption. The main causes of energy wastes were from employees and machines. The results of the prioritization of energy conservation can be divided into 3 phases according to payback period namely short, medium and long term which have 28, 7 and 9 energy conservation measures, respectively. The energy conservation measures were implemented at 17 manufacturers. For short-term, the total energy investment was 90,000,000 baht, resulting in total energy saving of 236,000,000 baht per year or 0.9 year payback period. For medium-term, the total energy investment was 20,000,000 baht, resulting in total energy saving of 11,000,000 baht per year or 3 year payback period. For long-term, the total energy investment was 30,000,000 baht, resulting in total energy saving of 3,080,000 baht per year or 49 year payback period.