Open AccessEffect of increased cabin recirculation airflow fraction on relative humidity, CO2 and TVOC
Author(s) -
Victor Norrefeldt,
Florian Mayer,
Britta Herbig,
Ria Ströhlein,
Ivana Ivandic,
Paweł Wargocki,
Lei Fang
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1024/1/012092
Subject(s) - airflow , environmental science , relative humidity , carbon dioxide , humidity , fraction (chemistry) , atmospheric sciences , meteorology , chemistry , engineering , mechanical engineering , chromatography , physics , organic chemistry
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.