This will create minimal circulation to keep air fresh. The fan will also generate a small amount of heat. They need moderate warmth, not cold. Apples should keep nicely in this storage once outside temps fall below freezing. But keep them separate with their own air vent to the outside.
Apples generate ethylene gas in storage.
Small amounts of the gas encourage potatoes to stay dormant and not sprout, which is what you want. The Bubels' fine book is available from Mother's Bookshelf on this Web site.