Ventilation of dwellings - central - 1 x 720 m3/h (market for)

The activity generating the emissions is market for ventilation of dwellings, central, 1 x 720 m3/h. The Reference Product is ventilation of dwellings, central, 1 x 720 m3/h. This is a immobile infrastructure, representing the product of a "ventilation of dwellings, central, 1 x 720 m3/h". It is a typical central ventilation system for a multi family house having 6 flats with 130 m2 floor area each and a ventilation rate of 120 m3/h. The system contains ducts made of steel or polyethylene and an earth tube heat exchanger. The lifetime of the system and ducts is 50 years, the lifetime of ventilation is 20 years and the lifetime of the filters is 1 year. The process includes materials inputs used for the construction and for the maintenance of the ventilation system, electricity consumption for the operation of the system and end-of-life. Influence of ventilation ducts on building construction not included. The Reference Product amount is 1. The cut-off classification is allocatable product. The activity type is market activity. Please refer to the ecoinvent documentation for full details: https://ecoquery.ecoinvent.org/3.12/cutoff/dataset/6821/documentation