Industrial refrigeration

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Industrial refrigeration

  1. 1. Ideas to think aboutExamples of how to substitute HCFC
  2. 2. Agenda for this presentationHow do we change from one technology to another?Which options do we have? Where does natural refrigerants make sense? Where does low GWP refrigerants make sense?What is needed for kick starting the proces?2 Johnson Controls
  3. 3. How do we change from one technology to another?Training, information, educationUnderstanding the problem, understanding what is needed to be done andexecution from all levels including the political world, industry and usersThe Montreal protocol was an undisputed success because it took this pathIt included1. Firm dates for the phase out2. Agreed terms and conditions for transitionThe states provided training of engineers, technicians and users in different ways3 Johnson Controls
  4. 4. Which options do we have?HFC and blends of HFC’s has been necessary to get out of the CFC era quickand smoothly, but the process cannot stop here.The current HFC’s are abandoned by the manufacturers for many reasons.New low GWP solutions will probably emerge in the market for some marketsegmentsMost mature products with negligible GWP are the natural refrigerants such asNH3 (ammonia), HC (hydro carbons), CO2 (carbon dioxide) and H2O (water)Some solutions are readily available in the market and some are breakingthrough the walls of R&D and getting in to field tests in the coming years.4 Johnson Controls
  5. 5. Global warming potential for most used refrigerants GWP for popular refrigerants 0 150 500 1000 1500 2000 2500 3000 3500 4000 R507 R404A R422A R422D R417A R22 R407C R134a R600aNaturals R290 R1270 NH3 Mac directive limit Position on refrigerant selection, ACP | Sep. 2010
  6. 6. Where does natural refrigerants make sense?Basically natural refrigerants can be used everywhereSince they are new to many in the trade training is the key to success.Training is required regardless the technology implemented.Safety is a concern but that goes for all refrigerants.Standards are in place in most cases.Components and system suppliers are ready in the market already6 Johnson Controls
  7. 7. ExamplesLondon Heathrow T5 is cooled by ammonia chillers.Oslo Intl. Airport Gardamoen and Copenhagen Intl. Airport are cooled with NH3District heating systems are being installed in Norway with ammonia heat pumpsAarhus University Hospital, Skejby in Denmark is cooled and heated by HCchillers and heat pumps.Hotel Scandinavia and the connected Aarhus Congress center in Aarhusinstalled NH3 chillers in 1996.McDonald’s in Denmark has installed cascade system using HC and CO2 in theirrestaurants.7 Johnson Controls
  8. 8. Where does low GWP refrigerants make sense?Where the refrigerant price does not become a major hurdle.Where proper training programs are in place on all levels.8 Johnson Controls

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