All,
Looking at major supermarket display case manufacturer's data sheets, often times a model is listed with multiple BTUH / ft and evaporator temperature requirements by product. ie; Meat / Seafood, Dairy / Produce & Beverage.

My question's are;
Is the a calculation software , maybe similar to the old Manual J for HVAC, but specific to refrigerated cases available to calculate these values.

How else specifically, can these values be obtained.

Thanks, Ken