1 / 7

Dr Daniel Colbourne d.colbourne@re-phridge.co.uk

Alternatives to HFCs for refrigeration and air conditioning including in high ambient temperatures UNEP Workshop on hydrofluorocarbons (HFC) Management 11 th – 12 th July 2014. Dr Daniel Colbourne d.colbourne@re-phridge.co.uk. Introduction.

leroy
Download Presentation

Dr Daniel Colbourne d.colbourne@re-phridge.co.uk

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Alternatives to HFCs for refrigeration and air conditioning including in high ambient temperaturesUNEP Workshop on hydrofluorocarbons (HFC) Management11th – 12th July 2014 Dr Daniel Colbourne d.colbourne@re-phridge.co.uk

  2. Introduction 100’s of alternative refrigerants; necessary to establish a GWP criterion ~70% of refrigerant consumption for service market Average GWP ~3000 Maximum average GWP < ~200 High future growth (A5Cs)

  3. Suitability framework Can determine the suitability of each alternative… system and application characteristics fn Sometimes, just too costly, high risk, inefficient Time and development

  4. Applicability with GWP <200 e.g., R290, R1270, R600a e.g., R1233zd, R444A e.g., R1234yf, R445A, LGA8, ARM42a, ARM30a, LTR6a Simplified overview Sectors without 100% potential

  5. Refrigerant-using sectors Needs improved safety concepts Current consumption can be almost entirely eliminated Requires development, new alternatives Can tolerate GWP>200 if others are <<200 e.g., DR7, DR4, L40, L20, LGA29, LGA40, etc Needs improved safety concepts

  6. Barriers “Marketed mind-sets” vs. actual technical hurdles Better standards without refrigerant arbitrary limits to hinder application Alternatives that can match R22 at high ambients Disparate national regulations and codes ? Business is to sell cold, not to faff-around with refrigerants Cost difference for R744 supermarkets, plug-ins, HC splits

  7. Consequences What will (or won’t) linger? Further deviation from ‘one size fits all’ mind-set Selection, design and installation can be more complicated More, thorough training for technicians, formalisation of service sectors Avoiding procrastination to minimise overall cost We won’t lose the sensation of cool!

More Related