Solar assisted ventilation tower, Frederiksberg
The project has demonstrated a building integrated ventilation system with the ducts system installed outside the facade. The air ducts are installed in a solar tower parallel to the staircases in the courtyard.
The objective of this project is to make an extensive measuring programme that documents the conditions as to ventilation, indoor air climate and solar energy function of 32 solar assisted ventilation towers. These are installed in June 2000 at Frederiksberg, as part of an EU-Thermie project and are used in combination with ventilation with heat recovery for 177 flats in all. The aim is that the developed solar assisted ventilation towers can be an energy-wise renovation solution in case of housing renovation of old blocks of flats and this way improve the possibilities of reaching the Danish energy policy aim. It is at the same time the idea to integrate a new type of ventilation unit with a constant volume flow rate to improve the possibility of individual user control of common ventilation systems with heat recovery. The connection between the PV-cells and the DC-ventilation units is also part of the project. The measuring programme includes measurements of: 1) Indoor air climate in 25 flats before and after the renovation with solar towers; 2) the consequences of use of healthy building materials 3) the efficiency of the ventilation system 4) the efficiency of the solar energy solutions in the solar wall 5) the yield from the PV-cells and from the Canadian solar wall
The towers utilise the solar energy for preheating the ventilation air. An air handling unit with couterflow heat exchanger is installed in the roof space. The system is designed for old building block, which are going to be renovated with mechanical ventilation. The system save room space for the installations of the ventilation ducts. The monitoring of the system performance show energy saving of 40% caused by new windows, individual heat meters and ventilation with heat recovery and solar tower. The System efficiency of the solar tower is high compared with other traditional solar wall constructions. The ventilation system is designed with a very low electricity consumption of the fans. The monitored electricity consumption is 22W per dwellings
Key figures
Category
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| By og Byg | ||
| SolarVent | ||
| Teknologisk Institut | ||
| SolenergiCenter Danmark | ||
| Frederiksberg Boligfond/PrivatBo |
Contact
Sct. Jacobs Vej 4
DK-2750 Ballerup, Denmark
Balslev-Olesen, Ole , 44660099, obo@cenergia.dk
Øvr. Partnere: By og Byg; SolarVent; Teknologisk Institut. SolEnergiCentret; Frederiksberg Boligfond/PrivatBo
