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20% less Energy consumption on Washing Machines - How were the savings achieved ?

ceced. 20% less Energy consumption on Washing Machines - How were the savings achieved ?. Rainer Stamminger (Electrolux) CECED, Vice president. Voluntary Agreement on Washing machines. Agreed between manufacturer / negotiated with EU Commission (DGXVII)

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20% less Energy consumption on Washing Machines - How were the savings achieved ?

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  1. ceced 20% less Energy consumption on Washing Machines - How were the savings achieved ? Rainer Stamminger (Electrolux) CECED, Vice president

  2. Voluntary Agreement on Washing machines • Agreed between manufacturer / negotiated with EU Commission (DGXVII) • As alternative to Efficiency directive • Based on Energy Label and referred to base-case as defined in GEA reports • Enables market forces to reach agreed target

  3. Content of Voluntary Agreement on washing machines • Hard target • 20 % energy saving compared to base-case • elimination of models in classes D to G from market offer (exception class D for <600rpm or <=3kg) • Soft target • inform consumer on energy saving use of washing machines • co-ordinate with detergent industry (A.I.S.E.) • transfer energy saving technology to Washer-dryers

  4. Main Technical Modifications • Reduced water in main wash • Reduced tub-drum clearance • Eco-valves, Jet-systems • lower levels • better control of level

  5. Water Level for main wash phase

  6. Reduced Water Level and reduced Tub/Drum clearance

  7. Introducing Jet System

  8. Main Technical Modifications • Reduced water in main wash • Reduced tub-drum clearance • Eco-valves, Jet-systems • lower levels • better control of level • Reduced temperatures - longer times • loss of performance compensated by longer washing times

  9. Influence on performance Energy Time Reduced temperatures - longer times

  10. Influence on performance Energy Time Reduced temperatures - longer times Decrease Temperature

  11. Influence on performance Energy Time Reduced temperatures - longer times Decrease Temperature Increase Time

  12. Influence on performance Energy Time Reduced temperatures - longer times

  13. Main Technical Modifications • Reduced water in main wash • Reduced tub-drum clearance • Eco-valves, Jet-systems • lower levels • better control of level • Reduced temperatures - longer times • loss of performance compensated by longer washing times • Electronic control • to have more accurate control • to apply advanced control procedures like fuzzy-logic

  14. Achievements • 20% saving could be reached in 1999 by improving almost all models • proven by notary reporting system • comparison of production and model based database show only very small differences • balancing of performance and energy was maintained • soft targets were successfully followed

  15. Conclusions and Outlook 1. Maximum saving potential (25% as worked out by GEA study) is almost reached! 2. Optimisation has improved machine parameters relevant for all or most of the programs - the efficiency was improved! 3. Further and faster energy savings can be achieved by replacing old washing machines in the households by most efficient new ones.

  16. Thank you !

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