F. G. H. Koene 1* and B. Knoll 2

1 Energy research Centre of the Netherlands ECN, Department of Energy in the Built Environment,

P. O. Box 1, 1755 ZG Petten, The Netherlands

2 TNO Building Research, P. O. box 49, 2600 AA Delft, NL
Corresponding Author, koene@ecn. nl

Abstract

In the RIGOUREUS project, ECN, TNO, TU Delft end DHV cooperate to develop innovative and affordable renovation concepts for terrace dwellings in The Netherlands, aiming at reducing their total (primary) energy consumption by 75%. A key aspect in the realisation of this target is minimisation of heat losses and maximisation of using solar heat. The basis for the concepts to be developed therefore is the Passive House concept and a solar collector in combination with additional measures.

The potential of integral renovation concepts based on maximising the amount of passive and active solar energy is explored, addressing the reduction of space heating and DHW as well as the reduction of domestic electricity consumption. A number of additional measures are presented, in particular aimed at decreasing electricity consumption in order to achieve the energy target.

Keywords: Renovation, 75% reduction primary energy, integral concept.

1. Introduction

The energy consumption in the built environment accounts for approximately one third of the total energy consumption in The Netherlands. The introduction of the Energy Performance Coefficient EPC in The Netherlands in 1998 as a mandatory requirement for new buildings has contributed considerably to the reduction of the energy consumption of new dwellings. However, little effort has been undertaken so far for existing buildings in this respect.

In the RIGOUREUS project, ECN, TNO, TU Delft and DHV develop innovative renovation concepts aiming at a reduction of 75% of the total (primary) energy consumption for Dutch terrace dwellings. A key aspect in the realisation of this target is minimisation of heat losses and maximisation of the solar contribution, while reducing the building related and user related electricity demand. The basis for the concepts to be developed is the Passive House concept [1], minimising the energy demand for space heating, in combination with a solar thermal collector to reduce the energy demand for DHW. Even though these concepts are well known in German speaking countries, several factors have prevented widespread application in the Netherlands, such as: fear of the unfamiliar, the typical Dutch building practice and economical considerations. Nevertheless, it is regarded as a necessary starting point for energy ambitious renovation concepts.