Foto: Frontansicht des Biohofs Achleitner

Multi-Activ-Facade

Multi-Activ-Facade is a pre-manufactured, multifunctional panellised façade, which incorporates ventilation with heat recovery, passive house windows and photovoltaic for smart self-supply within retrofitting measures. The specific challenge is the application within social housing.

Short Description

Status

ongoing

Summary

Starting point/motivation

Multi-Activ-Facade is a pre-manufactured, multifunctional panellised façade, which incorporates ventilation with heat recovery, passive house-windows and photovoltaic. Hereby the passive house-standard can be met by retrofitting and the construction time can be reduced to 1-2 days per living-unit. The technological innovation is the smart supply of the ventilation system by photovoltaic-modules and compensating battery with an energy-management-system. The specific challenge and opportunity is the application within social housing. Linked with this realisation within social housing is an enormous multiplication factor.

Contents and goals

The aim of the thermal retrofitting of a residential building with 35 units, owned by the municipality of Vienna, located on Hütteldorfer Straße 252 in the 14th Viennese district, is to achieve "Nearly-Zero-Energy standard". In order to achieve this goal, an innovative "Multi-Aktiv-Fassade" has been developed, which consists of a prefabricated wooden pillar-beam-system with a special cardboard-honeycomb insulation (by gap-solution GmbH) and integrated technical equipment.

Methods of treatment

The façade layer serves two purposes: mounted onto the existing outer walls, it forms the passive-house-envelope and - at the same time - includes all building appliances needed for passive-house standard. These appliances are energised by photovoltaic-modules, integrated into the façade layer, which is the central innovation of "Multi-Aktiv-Fassade". The PV-modules are connected to a compensating battery equipped by an energy-management-system, so peak-loads can be stored and switched on/off by the consumer. To tap the optimization potential and record the achieved performance, a comprehensive monitoring of the façade system as well as the energy consumption within the building is foreseen.

Expected results/conclusions

For this renovation solution towards plus-energy-standard, comfort ventilation, as a basic component of passive-houses, is necessary. In this project, decentralized ventilation is achieved with ventilation appliances in all important habitable rooms. The ventilation coils can be operated by co-current flow (produced by the PV-facade), guaranteeing a low use of energy (5-10 Watt per ventilator) with an optimized outcome.

The research includes five essential contents

  1. significantly shorter construction periods by using holistic prefabricated facade-solutions
  2. energy-balance by incorporating photovoltaic
  3. energy-buffering with batteries
  4. 100% own consumption guaranteed by the energy-management system
  5. CO2-balancing for the nearly-zero-energy-building-component

Project management

Universität für Bodenkultur Wien, Department für Bautechnik und Naturgefahren, Institut für konstruktiven Ingenieurbau, Arbeitsgruppe Ressourcenorientiertes Bauen

Project Partners

Project management

Universität für Bodenkultur Wien, Department für Bautechnik und Naturgefahren, Institut für konstruktiven Ingenieurbau, Arbeitsgruppe Ressourcenorientiertes Bauen

Project or cooperation partners

Contact Address

Univ. Prof. Arch. DI Dr. Martin Treberspurg
Peter Jordan Straße 82
A-1190 Wien
Tel.: +43 (1) 47654-5260
Fax: +43 (1) 47654-5299
E-Mail: martin.treberspurg@boku.ac.at
Web: www.baunat.boku.ac.at/iki.html

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