Multi-criteria refrigerant screening and performance optimization comparison of a basic and composition-adjustable dual cooling source system

Zhu, Yutong; Yin, Yonggao

doi:10.1016/j.applthermaleng.2023.122154

Cited by 1 publication

(2 citation statements)

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“…Additionally, the application of liquid-separation condensation technology has also been implemented by Sun [77], Chen [78], Pang [79], and Zhu [80] in various scenarios such as combined cooling and power cycle (CCP), LNG cold energy recovery, flash cycle, and dual cooling source system (DCS). The results all demonstrated that under specific operating conditions, the liquid-separation condenser has the capability to effectively enhance system performance.…”

Section: Liquid-separation Condensermentioning

confidence: 99%

“…Liquid-separation ORC coupled vapor-liquid ejector Net power output increased by 14.20% [78] ethylene/propane Liquid-separation ORC Net power output and thermal efficiency increased by 2.86% and 2.47%, respectively [79] R600a/R601a Liquid-separation organic flash cycle Condensation area decreased by 23.33% [81] R32/R236fa Liquid-separation DCS COP and dehumidification rate can reach 5.1 and 2.2 kg/h, respectively [76] R134a/R245fa Liquid-separation ORC with composition regulation Net power output increased by 4.79-9.71% [80] R32/isobutane R32/R1234ze(E) R32/R1234yf propane/isobutane propane/R1234ze(E) Liquid-separation DCS Exergy loss of evaporator decreased by 17.1-73.7% while the exergy efficiency increased by 3-59.7%; refrigerant charge decreased by 5.54-15%.…”

Section: Working Fluid Systemmentioning

confidence: 99%

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Enhancing Thermal Performance of Thermodynamic Cycle through Zeotropic Mixture Composition Regulation: An Overview

Huang,

Xu,

Deng

et al. 2024

Energies

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Composition regulation of zeotropic mixture working fluid for a thermodynamic cycle is an effective way to improve energy conversion efficiency, which offers the potential to construct efficient, flexible and intelligent cycles. Current research on cycle construction of zeotropic mixture composition regulation still heavily relies on construction methods using pure working fluids, where the characteristics of flexible composition variations fail to be utilized. In this paper, the research progress of cycle construction methods and composition regulated structures are comprehensively reviewed, aiming to clarify the potential for enhancing a thermodynamic cycle based on composition regulation. The characteristics of different cycle construction methods are firstly summarized and compared. Then, the composition-regulated structures of a physical-based method and chemical-based method are introduced, and the composition regulation performance are also concluded. Finally, a future outlook on the cycle design and structure design is provided. The review results show that the combination of 3D construction method and superstructure/intelligences construction method has the potential to maximize the cycle performance, where the improvement of each thermal process and the optimization of complex cycles can be considered simultaneously. The composition regulation based on a passive physical method has the advantage of being readily applicable; however, the composition regulation range is limited. In addition, the distillation and hydrate method have a wider regulation range through extra energy input, where the trade-off between energy consumption and cycle performance improvement should be considered in the future. This study greatly assists in the design of thermodynamic cycles involving zeotropic mixture composition regulation and the corresponding composition regulation structures.

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