"This is a powerful fan that uses water for a mild chill, not a true air conditioner."
The 29 ft/s wind speed means this unit feels like a strong fan blowing directly on you. It creates a wind-chill effect, but it will not lower the overall temperature of the room.
This is for someone in a very dry, arid climate (e.g., the American Southwest) who wants more cooling than a standard fan for a personal space without the energy cost of an AC. It's a spot cooler, not a room cooler.
Anyone in a humid or even moderately humid climate should avoid this. It will add moisture to the air, making the room feel muggier and potentially warmer. If you need to reduce a room's temperature, buy a real portable air conditioner.