Thermodynamic Analysis of a Combined Power and Ejector Refrigeration Cycle Using Zeotropic Mixtures

Yang, Xingyang; Zhao, Li

doi:10.1016/j.egypro.2015.07.369

Cited by 20 publications

(5 citation statements)

References 5 publications

(6 reference statements)

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“…More recently, application of zeotropic mixture in combined cooling and ejector refrigeration (CCER) cycles have been highlighted for performance enhancement purposes [28]. Yang et al [29] analyzed a CCER cycle using a zeotropic mixture of isobutene/pentane based on the first and second laws of thermodynamics.…”

Section: Introductionmentioning

confidence: 99%

Parametric study and working fluid selection of modified combined power and refrigeration cycles (MCPRCs) using low-temperature heat sources

Rostamzadeh

Ghaebi

2018

J Braz. Soc. Mech. Sci. Eng.

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This paper presents a theoretical analysis of various combined power and refrigeration cycles (CPRCs) as well as the working fluid selection used in these cycles based on the first law of thermodynamics. These proposed cycles include a combination of organic Rankine cycles (ORCs) and an ejector refrigeration cycle (ERC) to produce more power and refrigeration, simultaneously. In all the proposed cycles, the ejector is driven by the exhausts of the turbine. The performance of the proposed cycles for five appropriate working fluids (i.e., isobutane, isobutene, butene, R236fa, and R245fa) is evaluated by the means of their corresponding thermal efficiency and power/refrigeration ratio. It has been demonstrated that among all the proposed working fluids, isobutane is a good candidate with a thermal efficiency of 39.03-44.52%, which is enhanced through these modifications, successively. In this study, simple CPRC and modified regenerative CPRC with an IHE have the minimum and maximum thermal efficiencies, respectively. Thermal efficiency is improved by 8.27, 6.76, 5.63, 5.33, and 5.49%, in the case of R245fa, R236fa, butene, isobutene, and isobutane, respectively. Throughout these state-of-art modifications, rejecting heat has also been decreased. Moreover, the effects of key parameters such as evaporator, condenser, and generator temperatures on each cycle are also investigated. Keywords Organic Rankine cycles (ORCs) Á Ejector refrigeration cycle (ERC) Á Modified combined power and refrigeration cycles (MCPRCs) Á Working fluids Á Low-temperature heat source

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Section: Introductionmentioning

confidence: 99%

Parametric study and working fluid selection of modified combined power and refrigeration cycles (MCPRCs) using low-temperature heat sources

Rostamzadeh

Ghaebi

2018

J Braz. Soc. Mech. Sci. Eng.

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“…Finally, the ejector refrigeration system is incorporated into power cycles to recover their waste heat or/and to provide cooling in addition to the power generation. Table 5 shows the proposed studies of integrating the ejector refrigeration system with ORCs, 69,[84][85][86]95 absorption cycles, 91,92 Kaline cycles, 96,97 and SRCs. 94 The table also shows the operating conditions and achieved improvements by these novel studies.…”

Section: -53mentioning

confidence: 99%

Review of innovative approaches of thermo‐mechanical refrigeration systems using low grade heat

2020

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Cooling and refrigeration systems consume around 17% of the worldwide electricity. Enhancing the performance of these systems, using renewable energy resources and waste heat recovered from industrial processes, will lead to reduced fossil fuel consumption. Improvements of these systems using ecofriendly working fluids are of equal importance. Both options contribute to the minimization of the emissions of greenhouse gases and ozone depletion substances. In this paper, a detailed and comprehensive review of the innovative and improvement approaches of the thermo-mechanical refrigeration (TMR)

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“…The heat transfer fluid can be: air, water or a refrigerant. Most of the thermal collectors use water as work fluid, instead of air, because of its higher efficient [20].…”

Section: Introductionmentioning

confidence: 99%

Analysis and optimization of a heat pump system coupled to an installation of PVT panels and a seasonal storage tank on an educational building

Amo¹,

Martínez-Gracia

Pintanel

et al. 2020

Energy and Buildings

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Thermodynamic Analysis of a Combined Power and Ejector Refrigeration Cycle Using Zeotropic Mixtures

Cited by 20 publications

References 5 publications

Parametric study and working fluid selection of modified combined power and refrigeration cycles (MCPRCs) using low-temperature heat sources

Parametric study and working fluid selection of modified combined power and refrigeration cycles (MCPRCs) using low-temperature heat sources

Review of innovative approaches of thermo‐mechanical refrigeration systems using low grade heat

Analysis and optimization of a heat pump system coupled to an installation of PVT panels and a seasonal storage tank on an educational building

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