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- The world’s first Passive House, Darmstadt-Kranichstein, Germany
- s, airtightness, insulated glazing and controlled ventilation. Based on these considerations, **the "Passive Ho... ural drafts were prepared, * the efficiency of ventilation heat recovery units was improved, * ventilation controls were developed based on air quality guidelines, ... t_logo.jpg?150}}| 0.7 | | **Heat\\ recovery\\ ventilation** | Counterflow air-to-air heat exchanger;\\ Lo