摘要：The research aim was to analyse and compare the composition of
granulometric dust which accumulates in air filters located in central air
handling units supporting the production rooms and at the same time the
degree and a kind of contamination fraction of atmospheric air in a part of
Wrocław situated outside the city centre. Samples were taken in different
seasons of the year, such as March and October. The size of pollution particles
extracted from ventilation filters was measured with the use of
ANALYSETTE 22MicroTec plus laser particle sizer produced by FRITSCH.
The results of measurements were generated with MaScontrol software for
particle size analysis. In computing research results, the Fraunhofer diffraction
theory was used. The comparison of the examined air particles’ size in an air
supply canal allowed to determine the outside air dust size in Szczepin district
on Długa street in Wrocław. Moreover, the influence of the year season on the
size of contaminants accumulating in filters was also determined in the course
of research works.
其他摘要：The research aim was to analyse and compare the composition of granulometric dust which accumulates in air filters located in central air handling units supporting the production rooms and at the same time the degree and a kind of contamination fraction of atmospheric air in a part of Wrocław situated outside the city centre. Samples were taken in different seasons of the year, such as March and October. The size of pollution particles extracted from ventilation filters was measured with the use of ANALYSETTE 22MicroTec plus laser particle sizer produced by FRITSCH. The results of measurements were generated with MaScontrol software for particle size analysis. In computing research results, the Fraunhofer diffraction theory was used. The comparison of the examined air particles’ size in an air supply canal allowed to determine the outside air dust size in Szczepin district on Długa street in Wrocław. Moreover, the influence of the year season on the size of contaminants accumulating in filters was also determined in the course of research works.
