Evaluation of Prescriptive Indicators for Building Performance - A Ranking Based Approach

Author:

Pont Ulrich1,Mahdavi Ardeshir1

Affiliation:

1. TU Vienna

Abstract

In recent discussions on the evaluation methodology of different aspects of building performance, the idea of so-called prescriptive indicators was proposed. These indicators are simple benchmark values of a building, and do not require any complex calculation or simulation. They are regularly based on certain design parameters pertaining to geometric or semantic aspects of the building, such as compactness and mean weighted U-value. Their purpose – amongst others – is to equip building planners with a very quick method to estimate the performance of their building designs in early design stages and to categorize its performance. Moreover, such prescriptive indicators could be considered an alternative concept to the current practice of energy certification in Europe. The energy certificate calculation methodologies in most countries did increase in complexity in the past years. As a result, the issuing of energy certificates has become a time-consuming and cumbersome process. Moreover, the quality of results of energy certificates became questioned in recent years due to uncertainties connected to input data assumptions and widely interpretable guidelines regarding the issuing. Prescriptive indicators, if their derivation is properly documented, can at least mitigate the issue regarding issuing guidelines due to their simple character. A important research question, however, is the relation between key performance indicators, which are the results of energy certification or building performance simulation, and prescriptive indicators. This contribution suggests a methodology based on rank comparison that might help to identify prescriptive indicators that are similar in their sensitivity on design changes as certain key performance indicators are.

Publisher

Trans Tech Publications, Ltd.

Reference24 articles.

1. EPBD, Energy Performance of Buildings Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the energy performance of buildings, Directive 2002/91/EC, Belgium: Official European Union Journal.

2. EPBD, Energy Performance of Buildings Directive 2010/31/EU of the European Parliament and of the Council of 19 Mai 2010 on the energy performance of buildings - recast, Directive 2010/31/EU, Belgium: Official European Union Journal.

3. OIB Guideline 6 – Energieeinsparung und Wärmeschutz, 03/2015. Österreichisches Institut für Bautechnik OIB – available via www.oib.or.at (last accessed June 2017).

4. Austrian Standardization Institute (ASI) – ÖNORM B 8110-standard series (parts 1-7): Thermal insulation in building construction.

5. B. Sommer, U. Pont. Entwicklung einer strukturierten und fehlerminimierten Datenaufbereitung und Dokumentation für Energieausweise (EDEN). Berichte aus Energie- und Umweltforschung 24/2017. Available online via: https://nachhaltigwirtschaften.at/resources/sdz_pdf/berichte/endbericht_2017-24_eden.pdf.

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