KOENST Renewable energy-efficient plastics production technologies KOENST Work package 1 Recycling of compressed air 1 KOENST Renewable energy-efficient plastics production technologies Contents • • • • • PET – bottles & compressed air the E.A.R.S.-system Implementation at Dumocom, Almelo Test results Conclusions and recommendations 2 KOENST Renewable energy-efficient plastics production technologies Producing PET bottles 3 KOENST Renewable energy-efficient plastics production technologies Compressed air Use • Driving actuators • Expanding preforms to final bottles Production: Compressors, Boosters 4 KOENST Renewable energy-efficient plastics production technologies Facts & figures • Worldwide PET production: 200 bln bottles of water/ year1 • Average energy consumtion per PET bottle: 0,21kWh/bottle2 • Compressed air: 30-40% of total manufacturer energy bill3 1. 2. 3. plasticwastesolutions.com Gleick & Cooley (2009) Airbestpractices.com 5 KOENST Renewable energy-efficient plastics production technologies The EARS system 6 KOENST Renewable energy-efficient plastics production technologies Possible savings – ECN study (2011) • 25-42 % energy saving, depending on ‘mismatch’ • Theoretical calculations need to be experimentally verified 1Energiebesparing door middel van een perslucht retoursysteem, ECN, oktober 2011 7 KOENST Renewable energy-efficient plastics production technologies Implementation at Dumocom, Almelo 8 KOENST Renewable energy-efficient plastics production technologies Influence on the system: 1 bar 8 bar 3 bar 8 bar Influence of counter-pressure - Lower speed of cylinder - Timing problems Proof of practice - Use of a reduction valve to simulate counterpressure of 2 bar (rel.) 9 KOENST Renewable energy-efficient plastics production technologies Flow measurements 10 KOENST Renewable energy-efficient plastics production technologies 11 KOENST Renewable energy-efficient plastics production technologies Conclusions & recommendations • Careful selection (and tuning) of actuators is a must • Potential savings are large, actual savings have not been demonstrated yet (at Dumocom) • Dumocom case study will identify actual savings potential in PET-industry 12
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