During the past two years, Cooling Tower Specialist, Inc. completed the design and installation for the conversion of twenty-two (22) industrial-scale cross flow cells into multiple levels, multiple fans, counterflow cells (U.S. patent number 5,028,356).  The conversions occurred at a major nitrogen fertilizer manufacturing facility located in Louisiana, USA.  This paper details all aspects of the conversion, starting with the initial concept, design philosophy, performance expectations, and proceeding with all elements of construction.  Tower performance data prior to and after the conversion are presented along with an official CTI Performance test.

99-14: Conversion of a Crossflow Tower to a Double-Level, Multi Fan Counter