March 2022

Water Management

Optimize a cascaded cooling water network

Waste heat in process units is removed via heat exchange with a recirculating cooling water supply and return stream (FIG. 1).

Bhatia, H., Garcia, C., Nangia, K., Fluor Enterprises, Inc.

Waste heat in process units is removed via heat exchange with a recirculating cooling water supply and return stream (FIG. 1). The heat picked up by the cooling water exiting the network of heat exchangers is removed via direct contact with ambient air in a direct contact cooling tower. FIG. 1. Recirculating cooling water system. While numerous strategies and publications exist related to optimizing the cooling tower operation, this article focuses solely on the optimization of cooling water networks within a refinery process unit. In the past, process engineers have given a lower priority to optimizing cooling water networks. Many process uni

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