Disclosed are a reverse single-working-medium steam combined cycle and a combined cycle heat pump device, belonging to the technical field of thermodynamics, refrigeration, and heat pumps. A working medium composed of M1 kg and M2 kg is subjected to nine processes separately or together, wherein the nine processes comprise an M1 kg working medium heat absorption vaporization process 12, an (M1 + M2) kg working medium heat absorption process 23, an (M1 + M2) kg working medium boosting process 34, an (M1 + M2) kg working medium heat absorption process 45, an (M1 + M2) kg working medium boosting process 56, an (M1 + M2) kg working medium heat release process 67, an M2 kg working medium pressure reduction process 72, an M1 kg working medium heat release condensation process 78, and an M1 kg working medium pressure reduction process 81 to form a reverse single-working-medium steam combined cycle; and a corresponding combined cycle heat pump device is obtained by taking the cycle as a principle.
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