MARGRET - Measurement of greened/non-greened objects for the adaptation of calculation models

Starting point / motivation

Building-integrated greening measures such as roof and façade greening can make an important contribution to an energy-efficient and sustainable building design. Evaporative cooling, shading, insulation and improved microclimate make it possible to expand the energy optimisation potential in addition to structural and building services measures.

Regarding to higher outdoor temperatures due to advancing climate change, it is crucial to use all available options. At present, however, planners, builders, etc. lack the possibility to quantify and compare the influence of greening measures on buildings, e.g. on the basis of the energy performance certificate.

Contents and goals

The aim of MARGRET is to propose adaptations in the calculation models or standards and, in parallel, to define a procedure for measuring the effects. For this purpose, greening is measured on objects with contemporary building standards and under uniform framework conditions. The two thermally decoupled rooms with identical façade sizes and openings of the AEE INTEC façade test box will be used as greened and non-greened reference objects.

The planned investigations focus primarily on the effects of different types of façade greening. In addition, a part of the roof terrace will be temporarily greened in order to test a green roof in comparison to a non-greened roof. The façade surfaces can be tracked to the sun and thus enable investigations in several exposures.

Project management

IBO - Austrian Institute for Building and Ecology GmbH

Project or cooperation partners

• AEE - Institute for Sustainable Technologies
• GRÜNSTATTGRAU Forschungs- und Innovations- GmbH
• Consulting (third party): BOKU Institute of Soil Bioengineering and Landscape Construction (IBLB)

IBO - Österreichisches Institut für Bauen und Ökologie GmbH
Alserbachstraße 5/8
1090 Wien
Tel.: + 43 (1) 319 20 05
E-Mail: ibo@ibo.at
Web: www.ibo.at