SPONSOR CPD PROGRAMME | VENTILATION Module 172 Name (please print) ......................................................................................... December 2020 Job title .................................................................................................................. 1. What heat-recovery efficiency is quoted as Organisation ....................................................................................................... being available from thermal wheels? Address ................................................................................................................ A 20-34% B 35-49% C 50-64% .................................................................................................................................. D 65-79% Postcode .............................................................................................................. E 80+% 2. Which of these most appropriately describes the efficiency in terms of total heat exchange? .................................................................................................................................. Email ..................................................................................................................... Are you a member of CIBSE? If so, please state your membership number: .................................................................................... A mR (hR hO)/mO(hO hO) B mO(hO hO)/mR(hR hO) The CIBSE Journal CPD Programme C mO(hR hR)/mR(hO hO) D mO(hO hO)/mR(hR hO) E mR(hO hO)/mR(hR hO) By participating in this CPD module, you consent to sharing your details with Swegon. Swegon 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 Swegon 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. What is the principal benefit of the illustrated proprietary profiled channel? A Easier to clean B Increased heat transfer C Lower capital cost D Lower resistance E Reduced noise 4. What is the purpose of the purge section? A To ensure a balanced pressure on both sides of the wheel B To limit the opportunities for leakage across the seal C To practically eliminate carryover between the two airstreams D To provide trickle ventilation in supply to ensure good IAQ E To reduce pressure drop by limiting vortices References: 1 The Ecodesign for Energy-related Products Regulations 2010. 2 https://etl.beis.gov.uk accessed 6 November 2020. 3 De Antonellis, S et al, Design optimization of heat wheels for energy recovery in HVAC systems, Energies 2014, 7, 7348-7367; doi:10.3390/en7117348. 4 Energy performance of buildings Ventilation for buildings Part 3: For nonresidential buildings Performance requirements for ventilation and roomconditioning systems. 5 Lawrance, W and Schreck, T, Rotary heat exchangers save energy and prevent a need for recirculation which contributes to the decrease the risk of Covid-19 transfer, REHVA Journal, Vol 57, Issue 5, October 2020. 5. What filtration is given as an example of good practice for use at entry to the thermal wheel? A C1 (DIN 24185 E) B ePM170 (EN ISO 16890) C EU6 (EUROVENT 4/5) D M6 (EN779) E MERV 12 (ASHRAE) 56 December 2020 www.cibsejournal.com CIBSE Dec20 pp53-56 CPD 172 Swegon v3.indd 56 20/11/2020 15:07