SPONSOR CPD PROGRAMME | MVHR Module 218 July 2023 1. What is the minimum required thermal efficiency for a MVHR plate heat exchanger in the Ecodesign regulations? A 30% B 49% C 56% D 67% E 73% 2. In the south-eastern England future predicted weather files referred to in this article, what external winter temperature would encompass 99.5% of occupied hours? A -1C B 0C C 1C D 2C E 3C 3. In the four example commercial MVHR units, which one has the highest internal pressure drop per litre per second? A System 1 B System 2 C System 3 D System 4 E Not possible to assess, as they all have different daytime flowrates 4. What approximate heat recovery efficiency is required to maintain thermal equilibrium for the example highoccupancy small office, type 1, when external temperature is -1C? 5. A 0% to 10% B 10% to 20% C 20% to 30% D 30% to 40% E 40% to 50% In this work, what percentage of occupied hours required heat recovery for a mid-occupancy large office with mid-level insulation? A 0% B 1% C 10% D 18% E 42% 54 July 2023 www.cibsejournal.com Name (please print) Job title Organisation Address Postcode Email 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 Monodraught. Monodraught 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 Monodraught 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 Commission Regulation (EU) No 1253/2014 of 7 July 2014 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for ventilation units. 2 CIBSE Guide A Environmental Design, CIBSE 2015. 3 The Building Regulations 2010, AD L2, 2021 edition (2023 amends), HM Government, 202 4 BB 101: Ventilation, thermal comfort and indoor air quality 2018, UK ESFA, 2018. 5 Future weather file for London, Gatwick DSY 1 (moderately warm summer) for 2080, low emissions scenario, 50th percentile www.cibse.org/weatherdata.