Here's the situation: I live in outside Phoenix, Arizona and own a small one-floor town home with a connecting rectangular storage space approximately 4"x 14" or 56 sq. feet. The roofs on both the town home and storage space are flat. The storage space contains the water heater for the home and I basically use the remaining space for a workshop. There is no ventilation whatsoever in the "workshop" and, as you can imagine, it gets unbearably hot (reaching probably in the area of 130 degrees) and makes working in that space practically impossible. As a matter of fact, the heat gets so bad that the plastic on a VCR I had in there literally softened, buckled and warped. I want to ventilate it the best way possible, but am unsure of the best way to do it. What type of vent(s)/configuration would be the most effective and efficient at recycling the dead air out of the storage space? Would two vents placed at both ends work the best? What about intake vents on the walls at the top? Any suggestions would be appreciated...btw, I do have electric power in the space so I suppose a powered system is feasible although I would like to use a passive approach if it will do the job.