SPONSOR CPD PROGRAMME | REFRIGERANTS Module 146 June 2019 Name (please print).......................................................................................... Job title................................................................................................................... Organisation........................................................................................................ 1.Which part of the refrigeration process (shown in the p-h diagram) will provide the most significant cooling? A 1-2 B 2-2a C 2a-3 Address ................................................................................................................. .................................................................................................................................. .................................................................................................................................. D 3-4 Postcode ............................................................................................................... E 4-1 Email ...................................................................................................................... 2.Which of the following was not noted as a one of the preferred parameters or operational characteristics for a refrigerant? Are you a member of CIBSE? If so, please state your membership number: ..................................................................................... A Acceptably low risk of flammability The CIBSE Journal CPD Programme B Appropriate thermophysical properties By participating in this CPD module, you consent to sharing your details with Toshiba. Toshiba may contact you via email and/or telephone with further information and technical insight on its services. You have the right to optout from such communications at any time. I understand that I will receive marketing communications from Toshiba after completing this module (please tick here): By entering your details above, you agree that CIBSE may contact you with information about CPD and other training or professional development programmes, and about membership of CIBSE, if you are not a member. Go to www.cibsejournal.com/cpd to complete this questionnaire online. You will receive notification by email of successful completion, which can be used to validate your CPD records. Alternatively, fill in this page and post it to: N Hurley, CIBSE, 222 Balham High Road, London, SW12 9BS C Environmentally benign D Low critical temperature E Low or zero toxicity 3.Which of the following was shown as a likely transitionrefrigerant? A R12 B R32 C R404A D R452A Further information and reading: D A3L The recent ASHRAE webcast provides an excellent overview of the current state and future of refrigerants at www.youtube.com/watch?v=vTg7v4eSWqI. IoR presidential member Andy Pearson provides an accessible explanation on refrigerants in the one-hour webinar at cibse.org/index.htm#RefChoice0217. The IIR published a useful guide that explains the methodology of establishing life-cycle impact of refrigerants at www.iifiir.org/userfiles/file/about_iir/working_parties/ WP_LCCP/08/Booklet-LCCP-Guideline-V1.2-JAN2016.pdf. The flammability of refrigerants is clearly explained at www.kth.se/en/itm/inst/ energiteknik/forskning/ett/projekt/koldmedier-med-lag-gwp/low-gwp-news/ nagot-om-koldmediers-brannbarhet-1.575938. For commentary on refrigerants, the general (commercial) US-based website refrigeranthq.com provides a good general resource. CIBSE Guide B3:2016 section 3.3.3.4 gives useful background (but pre-dates the 2016 changes to BS EN 378). E B2 References: E R718 4.What would be the appropriate designation for a lowerflammability, lower-toxicity refrigerant? A A1 B A2L C A3 5. What is RCL? A Refrigerant concatenated limit B Refrigerant concentrating limit C Refrigerant concentration limit D Refrigerant contamination limit E Refrigerant COP limit 1 McLinden, M et al, Limited options for low-global-warming-potential refrigerants, Nature Communications 2017 DOI 10.1038/ncomms14476. 2 Guideline for Life Cycle Climate Performance, IIR, 2016. 3 EC Regulation 517/2014. 4 https://ozone.unep.org/news/kigali-amendment accessed 11 May 2019. 5 BS EN 378:2016 Refrigerating systems and heat pumps Safety and environmental requirements, BSI 2016. 6 An introduction to A2L refrigerants and their use in Refrigeration, Air Conditioning and Heat Pump applications,FETA 2017. 7 Makhnatch, P, Understanding refrigerant flammability, KTH Royal Institute of Technology, 2015. 58 June 2019 www.cibsejournal.com CIBSE Jun19 pp55-58 CPD 146 v4.indd 58 24/05/2019 16:27