Please give me some advice on the calculation and design of cooling towers.
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Provide parameters: The system's circulating water volume is 9339kg/h, the inlet water temperature is 50°C, and the return water temperature is 25°C. It is used in Yinchuan area. How should it be calculated?
I don’t know the detailed design method, but I would like to share my opinion. The design for your working conditions in winter should be relatively simple, but it is generally difficult to achieve in summer, because the cooling tower mainly uses air to cool the water. The temperature in summer must be at least above 30 degrees. Your return water requires 25 degrees. It is difficult to achieve such a temperature of circulating water, and it is possible to use water once. Isn't that too harsh? Generally, cooling towers are spray-type. In addition to considering the heat exchange effect, cooling towers should also consider whether the spray filler is damaged, structural design, fan selection, etc. I have read the book Q&A on Cooling Water Treatment Technology. Chapter 3 has a brief introduction to cooling towers. You can also read it if you are interested. I also searched the forum for you and found the following relevant content: Calculation of Cooling Tower Selection http://bbs.hcbbs.com/viewthread.php?tid=63692&highlight=%C0%E4%C8%B4%CB%FE Cooling tower training materials http://bbs.hcbbs.com/viewthread.php?tid=387579&highlight=%C0%E4%C8%B4%CB%FE The following link is all relevant http://bbs.hcbbs.com/search.php?searchid=3323&orderby=lastpost&ascdesc=desc&searchsubmit=yes
First of all, in the Yinchuan area of Ningxia, the dry bulb temperature is 28 degrees, the wet bulb temperature is 22.2 degrees, and the atmospheric pressure is 86.8kpa. If you want the inlet water temperature to be 50 degrees and the outlet water temperature to be 25 degrees under these meteorological conditions, after preliminary selection, you should choose 18mx There are five 18m cooling towers. Choose 9.14m or 8.53m cooling tower fans. The motor needs to be 200kw. The water treatment capacity of each cooling tower is 2000t/h. This is very uneconomical. It is recommended to recalculate the outlet water temperature based on the heat balance. Otherwise, it can only be exchanged at a high price.