Daniela Enz and S Robert Hastings 11 The diversity of the projects

It is interesting to observe how the different strategies and technologies presented in this book have been applied by designers in exemplary housing projects, and with what degree of success. Six projects from Sweden, Germany, Austria and Switzerland are documented in this chapter. Three building types are represented: single family detached housing, row housing and apartment blocks. This overview shows what absolute values are achieved, as well as the ranges. Except for the housing in Gelsenkirchen, the projects all achieve extremely low primary energy use for space and water heating, including electricity for technical systems (see Figure 1.1.1). It is also interesting to observe that the energy consumed to heat DHW is more or less equal to that required for space heating.

Each project has its own distinct features. While one architect focused mainly on finding and demonstrating an economical solution on how to construct a Passivhaus building, the others strived to develop sophisticated energy concepts, optimizing ecological aspects or integrating solar technologies within the building design.

B2a. Gelsenkirchen (DE)

□ 2b. Gelsenkirchen (DE) S 2c. Gelsenkirchen (DE) ü3. Thening (AT)

Space heating DHW Total primary energy for the system *

Space heating DHW Total primary energy for the system *

B2a. Gelsenkirchen (DE)

□ 2b. Gelsenkirchen (DE) S 2c. Gelsenkirchen (DE) ü3. Thening (AT)

Note: The total primary energy demand for the system includes heating, domestic hot water, pumps and fans. Household electricity is not included. Source: AEU Ltd, Wallisellen

Figure 1.1.1 Energy demand

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