May i ask why you don't recommend CO2? The reason we're looking at CO2 is for safety (food and otherwise) reasons. Our potential clients like Nestle require that we use "safer" refrigerants like propylene glycol or CO2. What other refrigerants might fit these requirements?

I don't have figures yet in terms of kw or compressor sizes. I do know that our capacity will be around 15,000 tons.

Thanks.