Externally funded project

Einsatz von dezentralen Ventilatoren zur Luftförderung in zentralen RLT-Anlagen


Project Details
Project duration: 10/201305/2017


Abstract


Is it possible to reduce the electricity energy demand of central mechanical ventilation systems and increase comfort at the same time? The presented research project examines this issue in the field of demand controlled mechanical ventilation in non-residential buildings. The new idea is to use decentralised fans to deliver the



airflow of a central air handling unit to the individual rooms instead of variable airflow dampers. The state of the art to realise a demand controlled mechanical ventilation is to build up a pressure difference by the fan of the central air-handling unit. The necessary pressure difference depends on the room (air outlet) with the highest aerodynamic resistance. To control the amount of air being



delivered to the different rooms (areas) of the building, the build up pressure difference is throttle individually in the air ducts of the rooms by airflow dampers. So every ventilated area has it´s assigned damper. The new approach aims to avoid throttling losses and to increase the electrical efficiency of the ventilation system. Therefore the airflow dampers are exchanged with fans (decentral fans) which build up the pressure difference just with the height and at the place it is needed to transport the fresh air to the corresponding room (area). The central fan just takes care of the pressure drop of the central air handling unit.




Keywords
Electrical Energy Consumption, Energie Efficiency, Fan, HVAC, Klimaanlagen, Lüftungsanlagen, RLT-Anlagen, Stromverbrauch, Ventilationsystem, Ventilator


Principal Investigator


Publications

2017
2017
2016
2015
2013

Last updated on 2017-11-07 at 14:05