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Heating & Ventilation<br />
Passivent CPD covers changes to BB101 in schools<br />
For specifiers involved in the design of school buildings,<br />
natural ventilation specialist Passivent offers a CPD<br />
seminar covering the imminent changes to the<br />
Department for Education’s Building Bulletin BB101.<br />
The new ‘Guidelines on ventilation, thermal comfort and indoor<br />
air quality in schools’ will see a number of key changes to the<br />
way air quality and thermal comfort are managed within school<br />
buildings. The new document will replace the current 2006<br />
edition and will have a significant impact on ventilation design<br />
strategies and system choices.<br />
As a member of the BB101 advisory group, Passivent is ideally<br />
placed to provide guidance on the changes and how to achieve<br />
future compliance. Its recently updated CPD entitled ‘Natural<br />
Unique patented double-bank louvre arrangement,<br />
including insect mesh, combines maximum rain<br />
rejection with good airflow performance<br />
Actuator to modulate<br />
duct position for different<br />
ventilation modes<br />
Base unit constructed from<br />
marine-grade plywood<br />
from renewable forests<br />
Passivent<br />
Hybrid Plus<br />
Airstract ®<br />
ventilation<br />
system<br />
Low-energy<br />
sweep fan<br />
Ventilation in Schools & Commercial Buildings’ will include the key changes to BB101<br />
and provide advice on the range of ventilation strategies available to enable specifiers to<br />
determine the correct strategy at the early design stage of a project. The CPD will also<br />
explain the association between BB101 and relevant Building Regulations as well as the<br />
importance of computational modelling to ensure a robust ventilation strategy.<br />
The CPD is free of charge and can be held at the client’s offices. To take advantage of the<br />
CPD, please contact Passivent on 01732 850 770, email projects@passivent.com or visit<br />
www.passivent.com/cpd<br />
Passivent is a specialist in delivering natural ventilation and daylight solutions and a<br />
leading UK company in the field of sustainable and energy efficient solutions. The<br />
Passivent name is recognized for providing innovative yet practical solutions across all<br />
sectors for the removal of moisture, cooling and air quality, background ventilation and<br />
natural daylight. All Passivent products are designed and developed under ISO 9001<br />
quality standards.<br />
www.passivent.com<br />
AirMaster MVHR units deliver quiet ventilation for SEN pupils<br />
SAV AirMaster mechanical ventilation with heat recovery (MVHR) units have enabled Furze Down School in Winslow, Buckinghamshire,<br />
to control indoor air quality (IAQ) efficiently while maintaining the low noise levels required for Special Educational Needs (SEN)<br />
facilities.<br />
Furze Down is a co-educational community school taking children from the ages of 5 through to 19, many with complex Special Educational<br />
Needs. Located on Verney Road, Winslow, the acoustic design ruled out openable windows for ventilation because of traffic noise. Average<br />
daytime background noise was 46 – 50dB at the external façade.<br />
Frankham Consultancy Group therefore specified AirMaster MVHR units because of their highly effective attenuation of external noise, 49dB.<br />
Further reasons for this choice were low specific fan power (SFP), quiet casing breakout noise and reliable temperature control.<br />
A total of 37 AirMaster units have been installed, comprising both AML 300 and AML 500 models, for use in class bases, life skills, media and<br />
nursery rooms. Units on the ground floor are connected horizontally to the outside through external walls, while those on the first floor are<br />
ducted vertically through the roof. Some units are partly<br />
recessed into void spaces while others are installed below the<br />
ceiling.<br />
As class sizes are relatively low, the units have been<br />
programmed to run at 80% of their maximum capacity, keeping<br />
casing breakout noise within the 30 dB(A) allowable under BB 93<br />
for SEN facilities. The AirMaster MVHR units are zoned in<br />
‘clusters’ and controlled via five control panels located in staff<br />
offices, thereby avoiding indicator lights in classrooms as these<br />
can upset children on the autistic spectrum.<br />
By using only short ductwork to connect to the outside,<br />
installation was straightforward with installation of each unit<br />
taking 3-4 hours only. All units came pre-programmed before<br />
delivery, helping commissioning to be carried out effectively.<br />
Demand control using integral CO 2 sensors ensures energyefficient<br />
operation and first class indoor air quality.<br />
www.sav-systems.com<br />
Furze Down<br />
classroom<br />
24<br />
Summer 2O17 <strong>4150</strong>
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