23-02: What Went Wrong with my Mass Balance: Calculation of Evaporation Historical Publications

23-02: What Went Wrong with my Mass Balance: Calculation of Evaporation Historical PublicationsWater conservation is becoming increasingly important. In some cases, facilities are being driven to zero blowdown or zero liquid discharge (ZLD). These constraints impose limitations on the amount of makeup water that can be utilized. A major component of the makeup is evaporation of water from the cooling tower. The rule of thumb often employed (Equation 1) is inaccurate and insufficient for predictive and planning purposes. In fact, evaporation can

Historical data indicated that the water was clear and contained less than 100 mg/l dissolved solids

antimicrobial properties

This standard sets forth in detail the recommended material and manufacturing limitations

Pulsation on the fan ring is directly caused by the movement of the cooling tower fan

Discussion on how this occurs and can be prevented is presented

0 ppm of poly DADMAC is effective for removal of turbidity up to 300 NTU and higher concentration

Testing included microbiological test to confirm the biocides effectiveness

Cofimco extensive research and the application of aerodynamic concepts to fan blades trough computational fluid dynamic analysis (i

) of the cooling tower

The paper will show how significant uncertainty is calculated versus predicted capability in natural draft cooling towers can occur

and installation practices

There are instances when an owner wants to assess the thermal performance of just an individual cell of a cooling tower as per ATC 105