IR thermography assisted analysis of the textile air diffuser

Recording of a thermographic profile for non-isothermal air stream from the textile air diffuser, also termed as a fabric duct, was conducted. The air stream temperature and velocity were measured at different planes and distances from the air diffuser for different flow rates. The air stream thermographic profile was recorded by using a curtain placed perpendicular to the outlet plane of the diffuser. The temperature profiles recorded by IR camera were compared with the results obtained by thermocouples and discussed in the light of the air stream velocity. Also, based on the performed measurement and analysis, the empirical expressions were developed allowing determination of the velocity and temperature within the air stream.