Even though different applications might seem to be 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 is mostly the same.
Cotes has prepared a document describing many kinds of moisture loads. Have a look in this document and decide what types of moisture loads exist in your application. In general, there’ll always be a moisture load from infiltration through windows, doors, ventilation with fresh air or similar. Often there’ll 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.