| 摘要 |
PURPOSE:To grasp qualitatively an exhaust gas diffusion state in a space by exhausting a gas from a topographical model placed in an air channel, and observing a color change of an indicating body on which a discoloring reagent is applied, placed in the vertical direction on its downstream side. CONSTITUTION:A model 4 is set in a prescribed direction by rotating a rotary plate 5. A discoloring reagent is impregnated to a supporting body 21 set in the upper space of the topographical model 4, and a mixed gas having a quality for discoloring this reagent is exhausted into a measuring drum 1 from a chimney model 2 through a path 19. The mixed gas exhausted from the chimney 2 is diffused by a wind made by a fan 14 and an air current control device 15 so as to become a prescribed air current condition in the measuring drum 1. Subsequently, when the diffused gas contacts the supporting body 21 impregnated with the discoloring reagent, the discoloring reagent is brought to discoloration, therefore, a diffusion state in a space of the mixed gas exhausted from the chimney model 2 can be obtained. |
