A New Method for Optimal Operation of a Cooling Tower in The Oil, Gas and Petrochemical Industries

In this research, the performance of a water cooling tower has been evaluated. As we know, one of the most important parameters in the discussion of oxygen corrosion in the refining, gas and petrochemical industries is the amount of dissolved oxygen in water. Basically, the lower this parameter will have an effective role in improving the performance of cooling systems such as heat exchangers, cooling towers. Accordingly, in this project, using a pilot scale cooling tower, we compared and compared the amount of water-soluble oxygen in the pond of this tower in two non-use balls and with a ball. It was created by floating black ping pong balls on the surface of the pond of the tower, a kind of resistance to sunlight, and also against the direct collision of water drips from the upper part of the tower toward the pond. The results of this study related to the condition of the ball used indicate a decrease in DO in the same conditions (temperature of 23 ℃ and atm1) from 8.6 mg/l to 6.5 mg/l. This amount (6.5mg/l), in real mode, the operation of a cooling tower at a temperature of about 30℃ can be further reduced. Reducing this parameter (DO) will have a positive effect on reducing the activity of aerobic bacteria and fungi. Also, placing these balls together on the water surface of the pond decreases the amount of light required by the fungi to perform the photosynthesis operation and reduces their growth intensity in a desirable manner. In addition, the lower the amount of dissolved oxygen in water, the industrial scale can reduce the consumption of injectable chemicals into water.