Perforated Tank. Main Water Feed Pipe. Raindrop Creator-This is a network of interlocking polyethylene filaments used in cooling tower applications. Test Area Tank containing device being tested.
Main Water Feed Pipe
Raindrop Creator-This is a network of interlocking polyethylene filaments used in cooling tower applications
Test Area Tank containing device being tested
Inset is overflow pipe used to control head in tank. Problems occurred due to siphoning but this was overcome by fitting a T-piece to break the siphon.
Views showing tray used for stopping rainfall entering test area during equilibrium and also to allow calibration plots of water head against rainfall intensity
Test item in place-in this case a pervious pavement without added inter block grit- This was used in a study on infiltration through upper geotextile and “failure” was indicated by water level reaching block surface
Calibration/equilibration tray can be rolled out of way using these linear rollers
System used to measure raindrop size. Only images close to rule (as indicated by small shadow size) were measured