Product gas is separated from material gas by a PSA process utilizing a plurality of adsorption towers each loaded with an adsorbent. Data is extracted from the service transaction data and the QMS data relating to specified parameters including customer experience data, and customer demand data. 24 weight percent carbon; 15 to 28 weight percent cobalt and 1. The refrigerant is compressed and circulated by a compressor powered by electricity from the marine vessel’s batteries or electrical power system.