ZEMCH 2019 International Conference Proceedings April.2020 | Page 434
(a) (b)
Figure 3. Picture of sheet material for testing (a) PVC sheet single layer (b) Multi‐layer (PVC sheet + fabric)
Table 2. The Result of Pressure durable Test.
Item PVC sheet
single layer
Pressure
durable Test
(30min,
1.2kgf/cm 2 ) Fail 1
Multi‐layer (PVC sheet +
Fabric)
Pass
As a result of the test, only multilayer sheets were found to withstand a pressure of 1. 2kgf/cm 2 for
30 minutes. The flow path pattern was circular and oval in two shapes, but there was a difference
in withstanding the pressure depending on the material regardless of the shape and pressure of
the pattern.
1 Bursts after 3 minutes at 1.2 kg f/cm 2
3.2. Experiment to check uniformity of flow speed
Infrared thermal imaging cameras were used to visually observe the flow rates, and it was tested
how many seconds the flow time of the injected water at the inlet of the 3LPM water reached at the
bottom of the lower outlet reached within each flow path.
Figure 4. Photograph of 30 degrees of water flowing inside the collector. Observe the water flow with
a thermal imaging camera. No dead zone was observed.
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ZEMCH 2019 International Conference l Seoul, Korea