IMPROVISED PROTECTION BY CONCEALMENT III. PROPERTIES OF PLASTIC WINDOW

Abstract

A measurement of tightness of a plastic window, sealed with duct tape and
a polyethylen sheet, was performed. The following three assessment methods were
used: pressure drop rate measuring, air permeability measuring, and measuring
a decreased rate of sulphur hexafluoride concentration in the test chamber.
Permeability related to the length of the gap and the window area, and its
effect on the sealing method were calculated from the measured results.
Measurement of the penetration of sulphur hexafluoride was performed at
different pressures (wind speeds), and effect of each way sealing and input
concentration were compared.