Find the detailed specifications for Passive House project ID 7884. Specifically, identify its construction type, the U-value of its exterior walls, the ventilation system used, and one unique ecological feature mentioned for this project, excluding general energy efficiency aspects. Summarize these findings.
Navigate to 'https://passivehouse-database.org/index.php?lang=en'. Click on 'Show certified Passive Houses'. Locate and click the 'Details' link associated with project ID 7884. Identify the 'Construction type' from the 'General Information' section. Identify the 'U-value' for the 'Exterior wall' from the 'Thermal envelope' section. Identify the 'Ventilation' system from the 'Mechanical systems' section. Identify one 'Ecological aspect' from the 'Additional information' section that is not a general energy efficiency point. Present the collected information as a summary.
Successfully navigates to the detailed page for project ID 7884. States the construction type as 'masonry construction'. States the U-value of the exterior walls as '0.233 W/(m²K)'. States the ventilation system as 'Siber, DF Excellent 3 Double flow ventilation with heat recovery'. States 'Use of native or adapted vegetation' or 'Low consumption sanitary appliances' as an ecological aspect.