SPONSOR CPD PROGRAMME | AIR CONDITIONING Module 163 June 2020 Name (please print)......................................................................................... Job title................................................................................................................ Organisation...................................................................................................... 1.Which of these is not a positive-displacement compressor? Address .............................................................................................................. A Centrifugal compressor ............................................................................................................................... B Reciprocating compressor C Rolling-piston rotary compressor ............................................................................................................................... Screw compressor Postcode ............................................................................................................ E Scroll compressor Email .................................................................................................................... D 2.Which of these components is unlikely to be found in a rolling-piston rotary compressor? A Cylinder B Discharge valve C Drive shaft D Inlet valve E Piston 3.How many rotations of a rolling-piston rotary compressor are required to move an intake of refrigerant to discharge? A 0.5 B 1 C 2 D 3 E 4 4.Compared with other positive-displacement compressors, which of these is least likely to be the case for rolling-piston rotary compressors? A Good resistance to slugging B High volumetric efficiency C Low vibration D Operating modulation limited to step control E Small carryover of lubrication oil Are you a member of CIBSE? If so, please state your membership number: ................................................................................... The CIBSE Journal CPD Programme By participating in this CPD module, you consent to sharing your details with Toshiba Air Conditioning, UK. Toshiba Air Conditioning, UK may contact you via email and/or telephone with further information and technical insight on its services. You have the right to opt-out from such communications at any time. I understand that I will receive marketing communications from Toshiba Air Conditioning, UK, 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 References: 1 2016 ASHRAE Handbook HVAC systems and equipment, Chapter 28 section 3. 2 Matsuzaka, T el al, Rolling-piston type rotary compressor performance analysis, International Compressor Engineering Conference, School of Mechanical Engineering, Purdue University, 1982. 3 Hirano, K et al, Development of a new mechanism for dual rotary compressor, International Compressor Engineering Conference, School of Mechanical Engineering, Purdue University, 2012. 4 Hirano, K et al, Development of a high-efficiency dual rotary compressor for air conditioner, International Compressor Engineering Conference, School of Mechanical Engineering, Purdue University, 2010. 5.In the modelled example of the improved twin (or dual) rolling-piston rotary compressor, what was the compressor efficiency working with a capacity of 2,500 watts? A 69% B 71% C 73% D 75% E 77% 46 June 2020 www.cibsejournal.com CIBSE June 2020 p43-46 CPD Toshiba 163 v2.indd 46 22/05/2020 17:46