I apologize upfront, but I don't have the details handy. Nonetheless, I could use some advice. This is a Caribbean application. The customer wants gas-driven backup for all of his refrigeration. I am thinking a screw compressor is in order. But the low temp load is about 25% and the medium temp 75%. The existing equipment is dedicated conventional air-cooled units.

Is it doable to provide a screw that can handle the low temp load and still provide a somewhat efficient handling of the medium temp load? We were thinking of including separate coils and condensers for this application. I just don't know enough about such an application. Any thoughts?