What water temperature to use for sizing a cooling tower (part 2)

In the long cold winter evenings in Friuli, during my military service, I had lots of free time and with the help of my friend Pasquale I was eager to put together a diagram containing ten years of data temperatures from dozens of different Italian cities.
Today, thanks to INTERNET finding this type of data is not very difficult. We have data archives that are a boon with respect to some years ago. This data is detected and recorded every ten minutes from thousands of weather stations around the world and are available in digital form on the net.
But, despite this great opportunity, essential data for sizing cooling towers can be still subjective and, more often, not significant or not economical for design purposes. Suffice to think of the consequences of door sizing due to incorrect data assumption of the air temperature.

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