Lets see...we have covered angled ceilings for recessed, small spaces for appliances, so how about short ceilings for fans.
Paddle fans can save money by lowering the perceived temperature across your skin like a wind chill. The opposite is true in the winter as the air will be recirculated when the fan is reversed.
For shorter ceilings, buy a ceiling "hugger" (actual industry term). Ceiling huggers are mounted on the ceiling itself without extension poles. This shortens the fans by about 6-12 inches and allows them to be placed in shorter applications..Best manufacturers for selection are Minka, Modern Fan and Casablanca.
Have a look...
Remember fans create wind chill, not actual lower temperature, so shut them off when you leave the room.