Even though different applications might seem very different, the moisture loads are calculated in a similar way within all industries. Depending on the industry, there might be other things to be aware of, but the calculations themselves are mostly the same.
Cotes has prepared a document describing many kinds of moisture loads. Have a look at this document to identify the specific moisture loads relevant to your application. In general, there will always be a moisture load from infiltration through windows, doors, ventilation with fresh air or similar. Often there will also be one or more internal moisture loads from persons, processes or something else going on inside the building. Please refer to the document mentioned above for more detailed descriptions on this topic.
Finding The Right Dry-Air Solutions