Using the design from the Brown Team for the drippers, we laser cut acrylic models and tested the flow of water through clear 3/16” vinyl tubing. We found that acrylic wasn’t the best material for the drippers and broke easily when the tubing was pushed through the opening. With an appropriate model size, with the opening tapering from 0.06” to 0.08”, we were able to test the flow of water. Unfortunately, while we did have a flow, the rate did not vary widely as the opening narrowed. What we learned: The flow rate depends on the water pressure, and pressure at which the water is entering the tubing. This rate will depend on the height of the storage tank, which affects how fast the water will come down. Although cheap, acrylic is not the best building material for the drippers. (An interactive version of the design for the Brown dripper can be found here.)
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