A consistent definition framework for net zero energy buildings

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Net zero energy buildings: A consistent definition framework

Ausführliche Beschreibung

Evaluation of the criteria in the definition framework and selection of the related options becomes a methodology to set »Net Zero Energy Buildings« (Net ZEB) definitions in a systematic way. The balance concept is central in the definition framework and two major types of balance are identified, namely the import/export balance and the load/generation balance. As compromise between the two a simplified monthly net balance is also described. Concerning the temporal energy match, two major characteristics are described to reflect a Net ZEB's ability to match its own load by on-site generation and to work beneficially with respect to the needs of the local grids. Possible indicators are presented and the concept of grid interaction flexibility is introduced as a desirable target in the building energy design.

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