This paper discusses the upgrading and repacking of two ND cooling towers at Hwange Power Station in Zimbabwe. The work involved replacing the badly blocked asbestos cement film pack with a high performance stainless steel splash/trickle pack while maintaining both towers in operation. The repack not only restored tower performance, recooled temperature was approximately 18°F worse than original design, but also improved recooled temperature by a further 3.6°F.
98-03: Upgrading and Repacking Two 460 MW Natural Draft Cooling Towers
Peter Bosman, Knight Piesold Energy LLC, Dave Stables, Knight Piesold (PTY) LTD