Effect of Increased Cabin Recirculation Airflow Fraction on Relative Humidity, CO2 and TVOC

Norrefeldt, Victor; Mayer, Florian; Herbig, Britta; Ströhlein, Ria; Wargocki, Pawel; Lei, Fang (13. January 2021): Effect of Increased Cabin Recirculation Airflow Fraction on Relative Humidity, CO2 and TVOC. In: Aerospace, Vol. 8, No. 15: pp. 1-16

Abstract

In the CleanSky 2 ComAir study, subject tests were conducted in the Fraunhofer Flight Test Facility cabin mock-up. This mock-up consists of the front section of a former in-service A310 hosting up to 80 passengers. In 12 sessions the outdoor/recirculation airflow ratio was altered from today’s typically applied fractions to up to 88% recirculation fraction. This leads to increased relative humidity, carbon dioxide (CO2) and Total Volatile Organic Compounds (TVOC) levels in the cabin air, as the emissions by passengers become less diluted by outdoor, dry air. This paper describes the measured increase of relative humidity, CO2 and TVOC level in the cabin air for the different test conditions.

• Item Type: Journal article
• EU Funded Grant Agreement Number: 820872
• EU Projects: Horizon 2020 > Other > Joint Technology Initiative > Joint Technology Initiative - Clean Sky 2
• Form of publication: Publisher's Version
• Keywords: aircraft air quality; adaptive ECS; subject testing
• Faculties: Medicine
• Subjects: 600 Technology > 600 Technology; 600 Technology > 610 Medicine and health
• ISSN: 2226-4310
• Language: English

References

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