New Refrigerants Question Time Introductory Comments Ray Gluckman Director, Climate Change SKM Enviros April 26th 2012, RAC, London SKM Enviros • Environmental Consultancy – 500 staff in UK • Part of SKM, Australian Engineering Consultancy – 7,000 staff worldwide • Ray Gluckman – Director of Climate Change Group – 100 staff involved in climate change work – wide range of activities related to reducing GHG emissions – RAC and F Gases are areas of special expertise achieve outstanding client success What next for refrigerant regulations? • High GWP refrigerants unlikely to be available long term • EC: F-Gas Regulation under review (? 2013/4) • Some of the options being considered: – HFC bans in specified product areas (new equipment) – HFC phase down schedule • International scene – discussions about HFC phase down via Montreal Protocol - ? impact by 2015/6 achieve outstanding client success Bans versus Phase Down • Bans – provide certainty – successful driver of innovation (MAC Directive) – but require GWP threshold and start date – inflexible • Phase Down – allows market much flexibility – affects new and existing equipment – but, “investment pointers” are less clear • Phase down seems to be current favourite achieve outstanding client success HFC Emission Reduction Strategies 1. Very low GWP fluids (e.g. GWPs much less than 150) – best solution, but many constraints 2. Low GWP fluids (e.g. GWPs between 150 and 1,000) 3. Medium GWP fluids to replace high GWP refrigerants – e.g. fluid with a GWP of under 2,000 to replace the widely used HFC 404A which has a GWP of 3,922) – part of “dual strategy” – enables early cuts in 404A 4. Low charge and low leakage technologies and improved maintenance to reduce the leakage achieve outstanding client success Refrigerant GWP Key constraints to usage Example markets (current) Ammonia 0 Highly toxic; slightly flammable; Large industrial refrigeration, incompatible with copper large air-conditioning chillers components Very Low GWP CO2 1 High operating pressure; low Large commercial and efficiency in high ambient industrial refrigeration temperatures; lack of available components; HCs ~5 Highly flammable Domestic refrigerators, small commercial hermetic systems HFO 1234yf 5 Slightly flammable; not MACs commercially available until 2015; lack of available components; not technically well proven; large compressor size HFO 1234ze 5 Lack of available components; not Water chillers technically well proven; large compressor size Refrigerant “Blend 300” GWP 200 to 400 Key constraints to Example markets usage (current) Slightly flammable. Not Not in current use Low GWP commercially developed yet “Blend 700” 600 to 800 Not commercially Not in current use developed yet HFC 32 675 Slightly flammable Being introduced for small Medium GWP air-conditioning systems HFC 134a 1,422 Medium GWP HFC 404A alternative (MT) HFC 407F 1,825 Medium GWP HFC 404A alternative HFC 410A 2,088 Medium GWP Small air-conditioning HFC 407A 2,107 Medium GWP HFC 404A alternative (MT) Use of Flammable Refrigerants (1) • Lots of important development work needed • Currently 3 categories in safety codes 1. non-flammable e.g. HFC 134a, CO2 2. slightly flammable e.g. ammonia, HFC 32 3. highly flammable e.g. HC 290 (propane) • New category being introduced: – 2L – lower flammability than 2, but slightly flammable achieve outstanding client success Use of Flammable Refrigerants (2) • Some interesting issues: • Is a single new safety code category sufficient? – e.g. should HFC 32 and HFO 1234yf be in same category – will “Blend 300” be less flammable than HFO 1234yf? • What impact does actual flammability have on choice of refrigerants in different applications – e.g. how much refrigerant in 1234yf DX system • Will new safety category restrict use further achieve outstanding client success Contact Details Ray Gluckman SKM Enviros New City Court, 20 St Thomas Street, London, SE1 9RS email: rgluckman@globalskm.com Tel: 01932 866344 achieve outstanding client success