STUDY OF REINFORCED EXHAUST SLOT SYSTEM

摘要

The contribution deals with research on capture efficiency of a slot reinforced exhaust system. A designed exhaust hood can work as traditional exhaust system or as reinforced exhaust system (REEXS). With the appropriate ratio of amount of exhaust and supply air the aspiration of exhaust air is intensificated along the axis of the exhaust hood.The contribution also describes the modification of the experimental set-up for research of traditional exhaust system and research of reinforced exhaust system. A tracer gas method was used for capture efficiency measurements of the system. We can identify a capture efficiency distribution of the tracer gas by this method,which can simulate the real contaminant formation in the working environment. This information is very useful for analysis of the ventilation and through this capture efficiency of the contaminant we can rate the exhaust system.The contribution includes results of measurement with the traditional exhaust system and the reinforced exhaust system and their comparison.