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Case Study - Holford Drive Sports Pavilion, Birmingham

Airtherm Engineering have recently completed the new installation of seven natural ventilation systems for Gill Mech Limited based in the West Midlands.

Airtherm designed and selected the correct systems to serve a new boxing hall within a newly built pavilion. The project required critical information to establish the correct airflow and terminal size and working closely with both the consultant, builder and mechanical company.

The natural ventilation systems installed have been designed in line with all current publications such as CIBSE guidelines, AM10 Natural Ventilation in commercial buildings and Building Bulletin 101. The terminal sizes were selected by our new computer aided software ‘Wind-iCalc’ and fully conforms to the CIBSE requirements.

Product Range
The Airtherm “Wind-iVent” is a natural ventilation system operating on established
aerodynamic principles. As external wind flows around the terminal, positive
and negative pressure areas are generated. On the positive side air enters the louvres
of the terminal and is directed down through the internal vanes into the room below
allowing a fresh air supply to be delivered; on the negative side the stack draws
the stale unwanted air which is expelled through the terminal into the atmosphere.

The Wind-iVent units are installed via specialist crane (working closely with
our on-site engineers). The systems are mounted onto the 3mm thk aluminium, fully
insulated, roof upstands. The units are then fixed and secured to both the upstand and
internal structure using universal fixings.

Once each unit is secured a low-leakage uPVC damper and 24v actuator is fitted,
followed by the insulated plenum and an internal powder coated grille to complete the

Airtherm offer a selection of roof plate solutions for all situations, including self mount flashings
and curb mount flashings with suitable upstands. The options for each project are discussed at the design stage, including the necessary openings that are
required to suit our systems.

The features and advantages of such a system:

  • A fresh air supply for workers - proven to increase productivity & reduce staff sickness
  • Naturally ventilated - reduce your energy costs and carbon footprint without the need for mechanical ventilation
  • Night time purge of stale air - creating a fresh working environment for staff the following morning
  • Better control of building temperature and CO² levels
  • Free cooling
  • Easy to use Stand-alone control solution

Project Details
Consultant: BSD
Client: Willmott Dixon
Sector: Leisure
Products: Wind-iVent Systems
Equipment: Natural Ventilation Systems
Application: Balance Terminals

For more information about our systems, please visit our website:


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