At relatively slow wind speeds such as 15mph, wind chill drains heat from an object as it flows past, and this conductive cooling effect seems to increase as the wind speed increases. However, at very high wind speeds such as 15,000mph (during atmospheric re-entry from space, for example), friction / compressive heating with the atmosphere has a well-documented heating effect - rather than transferring heat from the object as with wind chill, it adds enough heat to bathe it in flame and/or burn it entirely.
So how fast must one be going for these two effects to cancel out, assuming STP? If it is a smooth gradient of temperature there must be a zero in there somewhere. If not, there must be a dramatic jump in externally induced temperature change that could perhaps be used to generate energy. Please feel free to make any other assumptions necessary to answer (such as the shape of the object) as long as they are stated. References to further info would be appreciated as well.