The Leading News & Information Service For The Facilities, Workplace & Built Environment Community

Smart Ventilation System Given Passivhaus Certification

Smart Ventilation System Given Passivhaus Certification
20 September 2021
 

SAV Systems' AirMaster AM 1000, a mechanical ventilation unit, has been awarded Passivhaus Component certification.

The flagship AM 1000 is the first decentralised, duct-free, mechanical ventilation unit with heat recovery (MVHR) on the market to be awarded the certification. This enables the AirMaster AM 1000 to be used in Passivhaus school buildings.

The core philosophy of Passivhaus design is to create a comfortable and energy-efficient building with minimal energy wastage, raising the standard of the buildings it is applied to.

 

City of Edinburgh Council 

 

After the Scottish government has brought their target forwards to 2045, the City of Edinburgh Council (CEC) set their net-zero goal for 2030. The CEC has identified certified Passivhaus design as a method for slashing carbon emissions. To that end, all new schools built in Edinburgh will be certified Passivhaus.

SAV Systems'  time working with the City of Edinburgh Council (CEC) inspired them to undertake Passivhaus certification.

Ventilation plays a crucial part in two requirements of passive house standards: airtightness and space heating demand. Openings in buildings, such as windows and porous building materials can allow heat to escape, wasting the energy generated by the building. Consequently, Passivhaus buildings have high airtightness and low heat loss. However, in increasing the airtightness of a building to conserve energy, indoor air quality can suffer. Therefore, a mechanical ventilation solution is required to manage indoor air quality without wasting energy.

There is a range of approved MVHR solutions available under the Passivhaus framework. Many of these are centralised systems, which normally have high specific fan powers. AirMasters are decentralised and air distribution is duct-free, so fan power is kept to a minimum.

A typical classroom installation requires one AirMaster AM 1000 per room with intake and exhaust connection to outside. The AM 1000 can recover up to 90% of the room’s heat using an aluminium heat exchanger, reducing the building’s heat load and heat loss.

 

Image

Picture: a photograph of the Passivhaus certified component logo

 

Benefits of Decentralised MVHR in Passivhaus buildings:

 

  • Lower energy consumption due to low specific fan power
  • Lower operating cost due to reduced electricity demand
  • Limited project planning and dimensioning are required as positioning does not require excessive planning
  • Ventilation becomes a component of the building instead of a governing design factor
  • No ducting, diffuser grilles and suspended ceiling required due to the use of the Coanda Effect
  • Low pressure drops through limited ductwork
  • Faster building process in that installation can be done room by room as soon as the room is ready, instead of waiting for building phases to be completed
  • Fire dampers are not required as units do not exceed the room fire cell
  • Demand control on a room-by-room basis, by PIR sensors, CO2 sensors, or TVOC + CO2 sensors
  • Operational issues only affect one room, not a large group of rooms
  • Lower cost of ventilation units including a great reduction in the cost of both the building and installation
  • Units can easily be relocated if room function changes

 

Passivhaus in Education in the UK

 

Willmott Dixon has been appointed by Spelthorne Borough Council to deliver a Passivhaus leisure centre that aims to be one of the most advanced, energy-efficient leisure facilities in the world.

It will be the first wet and dry leisure centre to achieve the Passivhaus standard in Greater London, and will be designed to consume up to 70 per cent less energy compared with a standard new building, optimising natural daylight and integrating photovoltaic panels to generate energy from renewable sources.

Over at Canary Wharf, 2 Trafalgar Way is set to be the largest Passivhaus student accommodation scheme in Europe.

For a deep dive into a Norway primary school, a best-in-class example of Passivhaus design, click here. 

Picture: a graphic showing how the MVHR system works, with stale air being exhausted 

Article written by Ella Tansley | Published 20 September 2021

Share



Related Articles

Why CO2 Monitoring is 'Not Enough' for Healthy and Safe Offices

Will Cowell de Gruchy from Infogrid puts forward his argument for why the government should mandate smart air quality monitors in offices and schools. Will is the...

 Read Full Article
Pandemic Mode for Buildings  – The World's Safest Offices

Imagine an office where, in the event of a pandemic, an app will inform tenants that the air conditioning is running on fresh air only and disinfecting UV lamps have been...

 Read Full Article
Monitoring Energy Usage at Met Office HQ

Ralph James, FM & Technical Services Manager at the Met Office, explains how the latest sensor technology has allowed him to monitor the temperature and gather air...

 Read Full Article
HSE Provides Updated Advice on Ventilation During COVID

The Health and Safety Executive has expanded its advice for employers to provide adequate ventilation in their workplaces during the pandemic. This guidance is...

 Read Full Article
Sterilisation from CPA’s Biojet to Enable Safer Indoor Air

Biojet, from CPA Engineered Solutions, is a high volume air cleaning device that claims to deactivate up to 99.99 per cent of viruses (including coronavirus), mould and...

 Read Full Article
Ventilation – The Importance of Fresh Air in COVID-Security

Ventilation measures are considered the most vital engineering mechanisms in infection control within buildings. Research from REHA and CIBSE shows that adequate...

 Read Full Article
British Firm Launches “COVID-Secure” HVAC Technology

A British firm has developed a new system designed to help buildings with air management systems make their air supply secure against airborne pathogens. As COVID-19...

 Read Full Article
No Budget For Adequate Indoor Air Quality Precautions in Schools

When schools re-open fully in September, only very basic indoor air quality precautions will be taken due to tight budget constraints, according to BESA.  This is...

 Read Full Article
The EnviroKlenz Air System Plus Applied

The EnviroKlenz Air System is used to ensure clean air in a variety of high traffic environments, such as dentistry studios and school classrooms. According to...

 Read Full Article
New CIBSE Air Cleaning Guidance Considering COVID

Two new pieces of guidance on reducing COVID-19 transmission through ventilation and air cleaning technologies have been issued by the Chartered Institution of Building...

 Read Full Article