2004 Volume 29 Issue 92 Pages 39-48
Subjective experiments were carried out to evaluate thermal comfort of inhomogeneous thermal environment created in task area using floor air outlet. Subjects are allowed to control freely the supply air volume from the floor air outlet and the angle of elevation of the central axis of air jet from the floor outlet to get their thermal comfort. The remote control of the supply air volume and the angle of elevation are easily done using controllers put on the desk. Various combinations of the supply air volume and the angle of elevation of air jet were selected by subjects to achieve their thermal comfort, and then it is found that the comfortable conditions selected by subjects are well explained by SET^*; that is, most of the selected conditions are included in the range of 24℃〜26℃ of SET^*. Concerning to the impression for the air movement, most of the subjects accept the air movement as desirable thermal factor without feeling the cold draft. It is also found that the increase in the supply air volume from the floor air outlet does not contribute to decrease the air temperature in the task area but has effect to increase the coolness by increasing air velocity in the task area.
