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Decision XXIV/7

Decision XXIV/7. Final Task Force Report - October 2013 MOP-25 – Bangkok, Thailand. Overview of Presentation. Outlines the outcomes of the discussions at OEWG-33 in June and the process followed since then

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Decision XXIV/7

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  1. Decision XXIV/7 Final Task Force Report - October 2013 MOP-25 – Bangkok, Thailand

  2. Overview of Presentation • Outlines the outcomes of the discussions at OEWG-33 in June and the process followed since then • Describes the main changes that have been made to the structure and layout of the report • Highlights some of the major areas where information and analysis have been strengthened • Summarises major findings • Identifies areas which may require further investigation 2

  3. Outline of discussions at OEWG-33 and subsequent process 3

  4. Decision XXIV/7 – Guidance given at OEWG-33 • Restructure report to put greater emphasis on looking forward rather than backwards and also on barriers to progress • Should not seek to put environmental impacts into a hierarchy but should only seek to quantify climate impacts • As part of the restructure, seek to reduce repetition • No need to include additional sectors or quantify impacts where the baseline is uncertain (e.g. fire protection & solvents) • Seek to provide more explanation on the decision-making process • Highlight specific regional issues (e.g. high urban density) 4

  5. Decision XXIV/7 – Further information received • A number of references and links from the European Community (EC) • A marked up version of the draft report from the Government of Japan • Three slides from the Government of Japan on alternatives to high GWP substances, on literature references and on the commercialisation of products by Japanese companies • Comments from other stakeholders • An e-mailed contribution from the US (see corrigendum) 5

  6. Main changes made to the structure and layout of report 6

  7. Decision XXIV/7 – Report Structure & Layout • Executive Summaries have been extracted from Chapters and consolidated at front of Report to allow synergies to be seen • Chapter 2 updated to emphasise the key elements of the selection process, including the influence of local factors • New Chapter 3 introduced to capture information on what could have been avoided (mostly foam analysis) • Considerable further analysis in the Refrigeration and Air Conditioning sector (e.g. penetration rate potential) and the structured development of consensus • Re-working of graphics to focus on forward opportunities for avoiding impacts 7

  8. Refrigeration and Air Conditioning Major Findings 8

  9. RAC – Alternatives & Sectors • Main alternatives • NH3, CO2 and hydrocarbons • HFCs and unsaturated HFCs/HCFCs and blends with low GWP • Other HFCs and blends • Main sectors covered (both Article 5 and non-A5) • Domestic refrigeration • Commercial refrigeration • Large size and transport refrigeration • Air conditioning • Heat pumps and chillers • Mobile AC 9

  10. RAC – Alternatives Assessed • R-717, R-744, hydrocarbons (efficiency compared to HCFC-22) • Two unsaturated HFCs and one unsaturated HCFC (efficiency compared to refrigerants they replace) • Six blends* with medium GWP (containing low GWP HFCs) • HFC-32 (efficiency compared to R-410A) • Six refrigerants and blends with higher GWP (including HFC-134a) • Three high GWP HFC refrigerant blends (for comparison) * The composition of a blend is a compromise between GWP, flammability and energy efficiency 10

  11. RAC – Refrigerant issues • Current usage analysed in the Revised Report • Overarching issues important (training, safety and standards, system chemistry, toxicity, flammability and pressure, disposal) • Penetration rates for low and medium GWP options now defined in three classes (D, C, L, which stand for potentially dominant (>50%), potentially competitive and low (<10%)) • A full assessment is shown in Table 4.1 on page 56 of the Final Report • Constraints for certain penetration rates are a complex set of issues such as safety, efficiency, costs, materials and components, system complexity etc. 11

  12. RAC – findings Flammability, toxicity and thermodynamic properties of certain non fluorocarbon and fluorocarbon refrigerants can be barriers 5-15% higher costs for some hydrocarbon solutions (e.g. HC-290 & HC-1270) in indirect condensing units compared to HFC options There are a number of alternatives for stationary AC including carbon dioxide and hydrocarbons, with no clear market leaders. However, HFC-32 starts to play a role as a lower GWP alternative for R-410A. The loss of AC energy efficiency at high ambient temperatures is a significant issue for a number of refrigerants Overarching issues remain important, including the ones related to servicing, training and end-of-life treatment 12

  13. RAC – opportunities for selection • Low GWP refrigerants (such as proprietary blends N-13/ XP-10) are likely to replace R-404A, which has a very high GWP • R-744 is being used in Northern Europe for some indirect condensing units; R-744 can be applied in many supermarkets, developments are ongoing to expand the application area • HFC-32 and L-41 are both candidates in Small Self-Contained ACs with HC-290 being used in portable and split ACs. • In chillers, both HFC-1234ze(E) and HCFC-1233zd(E) have roles as replacements for HFC-134a and HCFC-123 respectively • R-744 and HC-290 make good progress in chillers, HPs, transport 13

  14. What can be avoided - SAC/Commercial Based on the assumptions in the report, for the period 2013-2020, 524 ktonnes of high GWP HFCs (11% of the total) can be avoided in SAC, equivalent to the avoidance of 9% of the total consumption in Mt CO2-eq in that period. This is for all countries (Article 5 and non-Article 5) The percentage in 2020 would be about 20% For the period 2013-2020, 270 ktonnes of high GWP HFCs (11% of the total) can be avoided in Commercial Refrigeration, equivalent to the avoidance of 25% of the total consumption in Mt CO2-eq in that period. This is due to the avoidance of very high GWP refrigerants The percentage in 2020 would be about 27% 14

  15. Flexible and Rigid Foams Major Findings 15

  16. Foams – Alternatives & Sectors • Main alternatives • Hydrocarbons, • saturated HFCs and unsaturated HFCs/HCFCs*, • CO2, • HCOs (methyl formate, methylal)*, • other • Main sectors covered (both Article 5 and non-A5) • PU Appliances • PU Board/Laminate • PU In-situ/Block • PU Spray • PU Integral Skin • XPS Board • Phenolic • Small, medium and large enterprises * Considered as ‘emerging options’ and, in some instances, still ‘under development’ 16

  17. Foams – barriers & restrictions • Hydrocarbons still blowing agent of choice in most transitions for large enterprises but investment costs limit the option for small-medium sized enterprises • Transition to unsaturated HFCs and HCFCs (HFOs) is conditional on registration processes (incremental toxicity testing) and investment plans • For XPS, CO2 has technical limitations and HFOs are likely to be only usable in blends because of cost • For some applications, the potential restriction of brominated and phosphate flame retardants adds to the challenges of selecting appropriate blowing agents 17

  18. Foams – opportunities for selection • HFOs are showing significant benefits for thermal conductivity • Methyl Formate and Methylal are being used in niche areas (integral skin, some vending machines etc.) • Hydrocarbons are being adopted more widely than might have been anticipated, but real costs are exceeding HPMP estimates • Enterprises are often co-funding hydrocarbon solutions • The development of blends continues to be critical to both technical and economic criteria 18

  19. Current GWP status of Blowing Agents • A5 Parties having more challenges than non-A5 • Partially owing to economies of scale • Also later transition from HCFCs • Two key areas of concern as of 2013 • PU Spray Foam • XPS Foam • Product & Process Flammability Economies of scale are critical 19 19

  20. Climate impacts that could still be avoided Opportunity Outcome Business as Usual One third saving in cumulative consumption but deferred emission savings 20 20

  21. Fire Protection & Solvents Major Findings 21

  22. Alternatives to ODS in Fire Protection • There are alternatives commercially available for almost all previous uses of ODS in new systems/extinguishers. • The need for chemical agents remains because inert gases, water mist and other traditional agents are not suitable for many fire protection applications. • In the fixed flooding market, HFCs have filled the chemical agent role and, since about 2005, a fluoro-ketone (FK) is increasingly more accepted. • In the smaller local application and portable extinguisher market, a special blend of HCFC-123 predominates, with substantially lesser amounts of HFCs.

  23. Alternatives under development • A Fluoro-ketone blend, and another undisclosed chemical, are currently under test. • 2-Bromo-3,3,3-trifluoropropene has fire protection characteristics that are close to those of halon 1211 and has low environmental impact. If it proves to be commercially successful for application in portable extinguishers, it would be the replacement of choice for halon 1211 in the civil aviation industry. • The aviation sector and certain military and cold climate applications remain a challenge in the transition from halon/HCFC based extinguishing agents. Nevertheless, the industry is still evaluating alternatives that have low environmental impacts, and the HTOC is assessing regional biases in fire protection agent and systems, and variations in price structure across the spectrum of available choices. This evaluation may provide additional clarity on future market penetration scenarios for low environmental impact agents.

  24. Solvent alternatives to ODSs • Many alternatives have been developed to replace ODS solvents including: • (semi-)aqueous cleaning, but there are limits to its use because some products/processes simply can’t tolerate water. • Hydrocarbons and alcohols, but are extremely flammable. • Chlorinated solvents and n-PB, but exposures should be strictly controlled due to their toxicity. • HFC and HFEs, but blending may be necessary due to their solvency, and HFCs are greenhouse gases with varying GWPs. The relatively high cost of HFEs limits their use. • HFOs are also becoming available 24

  25. Areas Potentially Requiring Further Investigation 25

  26. Decision XXIV/7 – Areas for further research • For RAC and foams, there are high levels of technical innovation and technology adoption is changing rapidly • The emergence and commercialisation of new low-GWP options makes regular assessment of available alternatives desirable • The relevant period for analysis could be extended beyond 2020 once alternative selection decisions are clearer • Further guidance may be possible at a later date on the selection of alternatives for area of high urban population density and high ambient temperatures 26

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