SPONSOR CPD PROGRAMME | HEAT PUMPS Module 190 January 2022 Name (please print)........................................................................................ Job title ............................................................................................................... Organisation ..................................................................................................... 1. What range of temperatures would be typical of the flow in an ambient network? Address ............................................................................................................. A 80C to 70C ............................................................................................................................... B 70C to 60C C 45C to 60C D 25C to 45C Postcode ........................................................................................................... E 15C to 25C Email ................................................................................................................... 2. Which of these was not listed as a potential uncertainty when establishing load requirements? ............................................................................................................................... Are you a member of CIBSE? If so, please state your membership number: .................................................................................. A Building fabric performance B Operating profiles The CIBSE Journal CPD Programme C Policy or tradition of adding safety margins D Potential cooling requirements E Specific heat capacity of water in loop By participating in this CPD module, you consent to sharing your details with Glen Dimplex Heating & Ventilation. Glen Dimplex Heating & Ventilation 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 Glen Dimplex Heating & Ventilation 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. 3. If a multi-residential building included 30 apartments, what is a rule of thumb diversity factor for the space heating? A 0.43 B 0.53 C 0.63 D 0.73 E 0.83 4. Which document may be most appropriate to evaluate the heat loss from the pipes in a communal heat network running within a building? Further reading: The application of in-home heat pumps connected to ambient networks is developing quickly and, aside from manufacturers technical resources, the CIBSE documents AM162 and CP11 provide a very useful grounding, with excellent examples and useful bibliography. This article was inspired by Design guidance for diversity factors for ambient temperature networks using the Zeroth Energy System, published by Glen Dimplex Heating & Ventilation. A AM16 B BS EN ISO 12241 References: C CP1 D DS439 E LUNA 1 CIBSE CP1 Heat networks: Code of Practice for the UK 2nd edition, CIBSE 2020. 2 CIBSE AM16 Heat pump installations for multi-unit residential buildings, CIBSE 2021. 3 Iman, S et al The building performance gap: Are modellers literate? BSER&T 2017, Vol. 38(3) 351375. 4 Danish guidebook Varme Stbi. 5 CIBSE Technical Bulletin Domestic water demand assessment for pipe sizing 2nd edition, CIBSE 2020. 6 DS 439 Code of practice for domestic water-supply systems, Dansk Standard 2009. 7 BS EN ISO 12241:2008 Thermal insulation for building equipment and industrial installations calculation rules, BSI 2008. 8 Design guidance for diversity factors for ambient temperature networks using the Zeroth Energy System, GDHV, 2021 www.gdhv.co.uk/zeroth-diversity-guide. 9 Wang, Z et al, Sizing of district heating systems based on smart meter data: Quantifying the aggregated domestic energy demand and demand diversity in the UK, Energy 193, doi:10.1016/j.energy.2019. 5. If the example 880m communal heat network was operating at 25C flow and 15C return, what is the likely approximate average heat loss from the pipe per metre? A Between 0 and 0.5W.m- B Between 0.5 and 1W.m- C Between 1 and 2W.m- D Between 2 and 4W.m- E At least 4W.m- 48 January 2022 www.cibsejournal.com CIBSE Jan 22 pp45-48 CPD 190.indd 48 23/12/2021 15:50