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Michael Bellstedt, Minus 40 (on behalf of Sustainability VIC)

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Industry and government experts will discuss Australian, New Zealand's and global policy and regulatory issues and the impact of the cooling sector on climate change. Key topics discussed will include the Kigali Amendment, the transition to zero net emissions systems, sustainability and renewables in integrated solutions.

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Michael Bellstedt, Minus 40 (on behalf of Sustainability VIC)

  1. 1. Refrigeration projects supported by Sustainability Victoria and DELWP Dr Michael Bellstedt Minus40
  2. 2. Projects (2017-2019) • Refrigeration Benchmarking study (SV) • Study of 50 small refrigeration units across Victoria • ARA and Minus40 • Refrigeration Masterclasses (SV) • 11 ½ day workshops aimed at refrigeration users • Content now available as video on SV website • Supermarket Energy Baseline study (DELWP) • Energy and refrigeration monitoring to baseline a supermarket for VEECs • Energy Audits (SV and DELWP)
  3. 3. Faults diagnosed via remote monitoring No Fault 36% 1 Fault 31% 2 Faults 26% 3 Faults 7% NUMBER OF FAULTS 1 1 1 1 1 1 1 1 1 2 2 2 2 2 3 5 5 6 6 0 1 2 3 4 5 6 7 Leaking Solenoid Valve Premature cut-in Inappropriate defrost setting Condenser Fan Fault or non-… Compressor staging control LP Control Setting Faulty TX valve Unnecessary start Short Cycling Ice build up What are the faults?
  4. 4. Fault impact
  5. 5. Fault diagnosis
  6. 6. Operating hours analysis 0 1 2 3 4 5 6 7 8 1 3 5 7 9 11 13 14 16 18 20 22 24 Frequency Operating Hours Operating Hours in a Day of Units Frequency Normal Distribution Faulty or Oversized Units Faulty or Undersized Units
  7. 7. Conclusions from study • 80% of studied units have at least one fault • 42% of studied units have quantifiable energy inefficiency • Up to 45% energy savings achievable on some sites • 10% average quantifiable energy savings possible by simple means • 246GWh annual energy savings possible across sector in Australia • Achievable in most cases by basic service/clean and recommissioning • 100% of studied units used HCFC or HFC refrigerants Please contact me on michael.bellstedt@minus40.com.au For a copy of the full project report
  8. 8. Masterclass locations
  9. 9. Six training topics 1 – Refrigeration basics 2 – Refrigeration compressors and system types 3 – Remote monitoring and benchmarking 4 – Design and install for efficiency (hardware) 5 – Design and install for efficiency (software) 6 – Maintain and operate for efficiency
  10. 10. Link to live courses https://www.sustainability.vic.gov.au/Business/Efficient-business- operations/Energy-efficiency-for-business/Refrigeration-Efficiency-Masterclass
  11. 11. Supermarket Energy Baseline
  12. 12. Rutherglen power use – Interval vs Monitored
  13. 13. Interval power VS Ambient Temperature
  14. 14. Monitored power VS Ambient Temperature
  15. 15. Observations • Higher granularity - much better correlation and prediction • Energy conservation measures (ECMs) can be clearly demonstrated and modelled • Remote energy optimisation feasible • Remote monitoring PLUS remote optimisation = plausible plan for supermarket energy use reduction + VEECs generation Tip • Add some submetering (Refrigeration / AC / Solar)

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