CPC驱动的不同工质太阳能联合冷却与动力循环的能量、火用、能量经济性和能量环境分析及多目标优化

IF 0.9 Q4 THERMODYNAMICS

International Journal of Thermodynamics Pub Date : 2021-05-26 DOI:10.5541/IJOT.873456

S. Zandi, Kamyar Golbaten Mofrad, Afsane Moradifaraj, G. Salehi

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引用次数: 8

摘要

本文旨在对制冷循环(RC)和热回收制冷循环(HRRC)进行全面的4E(能量、火用、火用经济、火用环境)和先进的火用分析，并与R744 (CO2)和R744A (N2O)工质进行性能比较。此外，还考虑了系统的多目标优化，从多个角度定义了系统的最优条件和最优周期。在HRRC中，热回收被用作有机朗肯循环的热源。能量和火用分析结果表明，两种制冷剂同时使用HRRC可提高性能系数(COP)和火用效率。HRRC-R744的COP和火用效率分别为2.82%和30.7%。由于HRRC具有较好的热力学性能，因此对该循环进行了其他分析。exgo经济分析结果表明，使用R744A会导致产品总成本的增加。R744和R744A的总产品成本分别为1.56美元/小时和1.96美元/小时。此外，为了获得过程的环境影响，使用生命周期评价(LCA)。exgo环境分析表明，使用R744A使产品对环境的影响增加了32%。与其他设备相比，压缩机和喷射器的内源火能破坏率较高，因此具有改进的优先性。通过对两种制冷剂的火用效率和产品总成本目标函数以及COP和产品环境影响进行多目标优化，表明HRRC-R744具有更好的经济和环境性能。在最优工况下，火用效率、产品总成本、COP和产品环境影响分别占28.51%、1.44美元/h、2.76美元/h和149.01美元/h。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Energy, exergy, exergoeconomic, and exergoenvironmental analyses and multi-objective optimization of a CPC driven solar combined cooling and power cycle with different working fluids

This paper aims to provide comprehensive 4E (energy, exergy, exergoeconomic, and exergoenvironmental) and advanced exergy analyses of the Refrigeration Cycle (RC) and Heat Recovery Refrigeration Cycle (HRRC) and comparison of the performance with R744 (CO2) and R744A (N2O) working fluids. Moreover, multi-objective optimization of the systems has been considered to define the optimal conditions and the best cycle from various perspectives. In HRRC, heat recovery is used as a heat source for an organic Rankine cycle. The energy and exergy analysis results show that utilizing HRRC with both refrigerants increases the coefficient of performance (COP) and exergy efficiency. COP and exergy efficiency for HRRC-R744 have been obtained 2.82 and 30.7%, respectively. Due to the better thermodynamic performance of HRRC, other analyses have been performed on this cycle. Exergoeconomic analysis results show that using R744A leads to an increase in the total product cost. Total product cost with R744 and R744A have been calculated by 1.56 $/h and 1.96$/h, respectively. Additionally, to obtain the processes' environmental impact, Life Cycle Assessment (LCA) is used. Exergoenvironmental analysis showed that using R744A increases the product environmental impact by 32%. Owning to the high amount of endogenous exergy destruction rate in the compressor and ejector compared to other equipment, they have more priority for improvement. Multi-objective optimization has been performed with exergy efficiency and total product cost objective functions as well as COP and product environmental impact for both refrigerants, which indicates that HRRC-R744 has better performance economically and environmentally. In optimal condition, the value of exergy efficiency, total product cost, COP, and the product environmental impact have been accounted for by 28.51%, 1.44 $/h, 2.76, and 149.01 mpts/h, respectively.

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来源期刊

International Journal of Thermodynamics THERMODYNAMICS-

CiteScore

1.50

自引率

12.50%

发文量

期刊介绍： The purpose and scope of the International Journal of Thermodynamics is · to provide a forum for the publication of original theoretical and applied work in the field of thermodynamics as it relates to systems, states, processes, and both non-equilibrium and equilibrium phenomena at all temporal and spatial scales. · to provide a multidisciplinary and international platform for the dissemination to academia and industry of both scientific and engineering contributions, which touch upon a broad class of disciplines that are foundationally linked to thermodynamics and the methods and analyses derived there from. · to assess how both the first and particularly the second laws of thermodynamics touch upon these disciplines. · to highlight innovative & pioneer research in the field of thermodynamics in the following subjects (but not limited to the following, novel research in new areas are strongly suggested): o Entropy in thermodynamics and information theory. o Thermodynamics in process intensification. o Biothermodynamics (topics such as self-organization far from equilibrium etc.) o Thermodynamics of nonadditive systems. o Nonequilibrium thermal complex systems. o Sustainable design and thermodynamics. o Engineering thermodynamics. o Energy.