ISO 16345:2014 covers the breadth of the updraft performance and pumping head of open- and closed-circuit, mechanical draft, wet and wet/dry cooling towers and natural draft and fan-assisted natural draft. The standard rating limitations for categorizations mechanical draft, open- and closed-circuit cooling towers are recognized.
ISO 16345:2014 does not support to the analysis and rating of closed-circuit towers where the process fluid run through a change in phase as it authorities through the heat exchanger or where the thermo physical things of the method fluid are not remaining.