The energy performance building and EPBD: a round robin test

Following the introduction of the Energy Performance of Building Directive 2002/91/Ce (EPBD) the energy performance evaluation of buildings takes on a significant role in respect to legal requirements and to the Energy Performance Certification market. The Directive 2006/32/Ce on Energy End Use Efficiency and Energy Services (EEESD) introduces some news related to EPBD, for example: Esco, Energy management, and Energy Audits.  Consequently with these directives the role of software simulation takes on an important role related to energy and economic factors, to evaluate better technical and economic solutions. In this paper we present a Round Robin Test between some software applied to an Italian case study, following the EN 13790 Standard and Italian Standard. The selected software are divided into: 

- Commercial software 

- Operational Rating Method, based on effective energy consumption (energy bills, tariffs) following the EN 15603 point 7 calculation procedure. 

The results of “Operational Rating Method” are the baseline from which to compare other software evaluation results. This choice accords with art.7 “Energy Performance Certification” of EPBD, which provides for evaluating and to proposing recommendations for the cost-effective improvement of energy performance.