METI / ECCJ / ACE Training Program MTPEC05 (2006.08)

Case example of audit (4): Plastic product manufacturing

Problems:
1. Six units of compressors are installed independently, and the number of units in operation is left to personal judgment.
2. While high temperature water discharged from dies and molding equipment is cooled in the cooling tower for reuse, supply water is heated in the boiler.
Measures:
1. Combine six compressors to automatically control the number of units in operation.
2. Control the circulating water volume of the cooling tower.
3. Recover the steam flowing out of the dies, and return it to the boilers through condenser, vacuum pump, and strainer.
Effect:
Reduction of power consumption — 24,525kWh/year
Reduction of heavy oil — 648kL/year
Total energy-saving rate — 17.2%

Presentation of Successful Cases (Best Practice)
Annual Central Convention in TOKYO

Number of successful cases presented at
the National Convention of Excellent Successful Cases in Energy Conservation Activities

Grand prize at the National Convention
of Excellent Successful Cases
In Energy Conservation Activities

<2001 FY, Central & 9 Regional Conventions>

Grand prize of the Minister of Economy, Trade and Industry (3)
- Toyota Motor Hokkaido Corp., Production Div., Energy group “Energy conservation activity carried out by all members of the Energy group”
- Nippon Steel Corp., Kimitsu Works, R&D group of dust recycling “R&D on re-using technology of surplus dust to raw material for the burst furnace”
- AEON Co., Ltd. Managing Division “Systematic implementation of energy conservation counter measures in the supermarket by practical application of ESCO”

<2003 FY, Central & 9 Regional Conventions>

Grand prize of Minister of Economy, Trade and Industry (3)
- Daikin Industries, Ltd. “Integrated energy-efficiency unit of freezing, refrigerating and air-conditioning”
- Mitsubishi Heavy Industries, Ltd. “Highly efficient inverter-driving turbo chiller”
- Toyota Motor Corporation “Toyota intelligent Idling-stop system”
Prize of Director General of Agency for Natural Resources and Energy (5)
Prize of the Chairman of ECCJ (15)

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