Lars-Åke Mattsson, Kirk Bracey
Languages: English | Pages: 5 pp
Bibliographic info:
38th AIVC Conference "Ventilating healthy low-energy buildings", Nottingham, UK, 13-14 September 2017

The industry is now focusing in system solutions and the goal is to be able to deliver complete reliable, energy efficient solutions that is understandable and easy to maintain by the normal service personal.
In order to do this the basic products have to perform exactly as they are described in the technical documentation. The documentation have to help the designer and the installer to actually build the system in the correct way without compromises from other stakeholders.
The system integration must also be simple and with a plug and play vision in order to have the correct function including demand controlled ventilation, the function in a fire situation and be able to maintain the system by a smart diagnostic tool, helping the service personal and enlighten the building owner with usable graphs and information to be able to follow up on the performance.
All these issues is one by one not technically not very difficult but when it comes to reality it often fails due to the complexity of a building and the responsibility chain that is used in our business.
We can today see that many systems is performing poorly and the end user have no chance of communicating the problem to the right responsible stakeholder. The solution is that the suppliers have to take a bigger responsibility and actually see and provide guaranteed functions instead of the cheapest product just like the car industry.
One real technically difficult issue that will be highlighted in this presentation is to be able to measure the airflow very accurate in a world were space is not available and the flows are going to very low levels and that we are not allowed to create extra pressure drop. The modern way of measuring airflow will probably be with ultrasonic sound which allows very low flows and no pressure drop and high accuracy. This smart and accurate devices can also be the basis for a diagnostic tool that can provide indication of the:

  • Controlling and monitoring of the system
  • Status of the system
  • Where to look for failure
  • Costs follow-up
  • Accurate payment of IAQ to the tenants