Dry Coolers and condensers capacity

[MrReds]

Hallo to everybody !
I have realized a research but I have not found anything useful about following issue in the previous posts.

Therefore, I would be grateful if somebody could help me:

For the condensers you can generally give the capacity in a standard condition and then you can analyze the variation of capacity in different conditions with a linear variation of TD, as a rule of thumb.
That’s the reason why you give the heat rejection. Ex, if with a TD of 20K you have got a certain capacity, with a TD of 15K you’d have a capacity near 75% of previous one.

Please, I’d like to know if there the same rule is suitable for the dry coolers ?

If not, is there any rule to calculate the capacity of chillers ?

Thanks in advance !

 

[MrReds]

Sorry Just to make a clarification:
For dry coolers I mean water coolers.

When I ask : do you know a method to calculate capacity of these water coolers, I forgot to specify: "In a condition different than a specified one"

Sorry for not being clear !

 

[stanlsimon]

I'm not quite sure I know what you are asking about. You should look at ARI standards for rating equipment. If you do look at a manufacturer's published data for a chiller or a dry cooler it will state what the testing conditions are and how the equipent performs at those conditions.

I don't believe they would let you use data from one set of conditions and extrapolate to another. It would have to be actual performance data.

 

[imok2]

for dry coolers go here:

http://www.colmaccoil.com/pdf/AFV1600.pdf