The use of fine water sprays as alternative method for fire control has been widely recognized [1-3,5-9]. The smaller size water mist droplets offer larger surface area for the same amount of water, allowing faster evaporation of the droplets, and more effective heat extraction from a fire. The mist vapor dilutes the concentration of oxygen as well as of the pyrolysis fuel vapor, thus slowing or arresting combustion. Water mist can also block the thermal radiation and pre-wet other combustibles in the neighborhood to reduce their temperature and delay the ignition. However, there is still a need to quantify the properties of water mist using sophisticated tools such as PIV and PDA systems [10]. In addition there is still limited general consensus on the design method for water mist fire protection systems, despite some water mist an attractive alternative for fire control [4].