There are many cycles, such as precooled, mixed refrigerant AP-C3MR™, AP-SMR™ and AP-DMR™ processes; that will produce LNG reliably and efficiently; however, gas expansion cycles such as the AP-C1™ process should also be evaluated as its unique features may better meet project-specific goals.

This paper shows that gas expansion cycles can provide significant benefits and are especially well-suited for operating in arctic climates.