Summer without chiller should be able to use "Tiny Cooling Fan", whether it is sold on the market, or DIY, is similar to a number of computer cooling fan even in a row, but there is no one found, not even more in a row cooling the better, the current and the power adapter side does not say that only the cooling effect, I come to a conclusion, too close to the wind will be between "Tiny Cooling Fan" and fan the collision will affect the wind, leading to the impact of the cooling effect of , such as the fan even five in a row, you use the Three or two, as long as one to two fan width apart between the fan (as long as the wind and the wind collision occurred not too close) to see the cooling effect, should be the same, In other words, the market or the common "Tiny Cooling Fan" is less effective, and cost with more (buy a fan), but also with more electricity.