Abstract
The aim of this study is to investigate that the diameter and the number of the flow channel, the position is what effect the pressure in lower plenum and quantity of liquid falling by using multiple flow channels, the smaller tube diameter. As a experiment condition, equipment consists of ten 1mm diameter narrow channels. We investigated pressure in lower plenum and quantity of liquid falling through an experiment and calculation. As a result, the following facts became clear. Pressure in lower plenum and quantity of liquid falling were decided by the number of glass tubes.
