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There are many studies on the Kalina cycle and steam Rankine cycles. However, there are not enough comparative and descriptive studies on why the Kalina cycle or steam Rankine cycle should be selected. In addition to that, almost there are no papers on why Kalina cycle and steam Rankine cycle are commonly used systems rather than the pure ammonia cycle. For these reasons, the present paper was designed, analysed and compared comprehensively the Kalina, steam Rankine and pure ammonia cycles as a subsystem for use in a cogeneration cycle. Moreover, the pure ammonia cycle system was analysed for both simple and regenerative designs to comprehensively present all cases. After deciding the best cogeneration system configuration for the present system, the economic and environmental analyses of the best performing system were performed. In addition to all these, during the study, the …