Abstract:
The construction of advanced thermal cycle is an effective way to improve energy conversion efficiency. Based on the composition regulation of zeotropic mixtures, it is expected to construct efficient thermal cycles by synergistically improving the performance of multiple thermal processes. In this paper, the related studies are reviewed from the aspects of cycle construction methods and component regulation technologies. The 3D construction method of thermal cycle provides the idea of improving the performance of each process through composition regulation, while the superstructure construction method and intelligent construction method provide the way to solve the design and optimization problems of complex cycles. In future research, multiple construction methods can be combined to obtain more effective and feasible cycle construction methods; T-junction and liquid separation condenser are easier to apply to actual circulation, but the passive regulation mode relying on gravity and inertial force also limits the range of composition regulation. The distilling tower and hydrate can realize active regulation of zeotropic mixtures. The energy consumption of composition regulation and the improvement of cycle efficiency need to be comprehensively balanced in the following studies.