Peltier Based Personal Cooling Unit

With the summer months approaching, the hallways and classrooms at my school are getting increasingly warm. I developed this pocket sized personal cooling unit to help me beat the heat. A small water block is sandwiched between two peltier coolers. A heat sink and fan is attached to each hot side of the peltiers to keep them running at optimal efficiency. The water block can be plugged into a sweatband with integrated silicone tubing to keep the cooling effect circulating around my wrist.  The entire unit is powered from a set of 9V batteries stowed inside the project enclosure.