SEARCH

SAV Systems welcomes BB101 school ventilation changes

SAV Systems has backed the changes introduced by the latest edition of BB101, Guidelines on ventilation, thermal comfort and indoor air quality in schools, noting the improvements to comfort and indoor air quality (IAQ) that will be delivered in a range of school spaces.

SAV’s David Bradbury said: “The key changes in BB101 2018 will have a very positive impact on creating a healthy and comfortable learning environment. For example, there is now clearer guidance on controlling draughts. To tackle the issue of poor outdoor air quality, better air filtration is now recognised as a necessary solution. At the same time, IAQ and noise levels need to be kept under control.” 

In relation to thermal comfort, BB101 now defines acceptable temperature differentials between air delivered to the occupied zone and air already in it, for both natural and mechanical ventilation and different types of spaces.

To minimise the effect of polluted air, recommended filter grades are now derived from standards set by the World Health Organisation (WHO-2005). For polluted areas, filters to at least ePM1 55 per cent (= F7) are required. This means that for more or less any schools within the London area and other city centres, mechanical ventilation with filtration will be the only acceptable solution.

For IAQ the focus is now on outcomes, with greater emphasis on average carbon dioxide levels as a measure of actual IAQ, with personal requirement criteria for air flow rates (e.g., 8 l/sec/person) providing guidance only.

Other important areas addressed and summarised in an advisory document published by SAV include noise levels, filtration of supply air and the criteria used to identify and rectify overheating.

SAV’s BB101 overview can be downloaded here.

19 September 2018

Comments

Already Registered?
Login
Not Yet Registered?
Register

HVR Awards 2019 entries open: celebrating a decade of excellence

The HVR Awards has been carrying the torch for innovation and excellence from across the HVAC field for 10 years, and now with entries now open for the landmark edition, you have the chance to be a part of it.

  01-Apr-2019

Pendred team joins Humidity Solutions

Humidity Solutions has welcomed three new team members, all of whom previously worked for humidification and water systems specialist Norman Pendred & Co....

  18-Apr-2019

LG - providing quality solutions to the solution providers….

LG is one of the prime suppliers of air conditioning equipment across the globe and is rapidly building its market share in the UK. Its reputation is growing as more and more customers select LG products ahead of the competition. One such customer is leading engineering consultancy, Cundall
  17-Apr-2019
Heating & Ventilating Review is the number one magazine in the HVAR industry. Don’t miss out, subscribe today!
Subcribe to HVR

Diary