CIW 4 2004-01 Cooling water studies Optimalisation of discharches on river and lakes systems

Industries discharging cooling water on the surface water are bound to restrictions as formulated by the authorities. The allowed temperature rise of the cooling water temperature by an industrial installation in summer periods is 7oC, and since 30oC is the maximum allowed discharge temperature, the inlet temperature should not exceed 23oC to maintain normal plant operation In addition to these restrictions, the surface water should not increase in temperature more than 3oC, and not exceed a temperature value of 25oC averaged over a vertical cross-section, and averaged over the tidal cycle (if applicable).