Engineered Systems, Feb. 2017, by Kishor Khankari.
http://www.esmagazine.com/articles/98146-where-to-place-air-cooled-chillers

"Warm discharge plumes sweeping back into air-cooled condensers is nobody’s idea of an ideal performance environment. This CFD study shows how wind speed, wind direction, spacing between chillers, and separation from adjacent buildings all factor into the conversation about the best defense against unwanted hot air."