A comparative study of the carbon dioxide transcritical power cycle compared with an organic rankine cycle with R123 as working fluid in waste heat recovery

Chen, Yang; Lundqvist, Per; Johansson, Anders; Platell, Peter

doi:10.1016/j.applthermaleng.2006.04.009

Cited by 318 publications

(124 citation statements)

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“…Madhawa Hettiarachchi [6] proposed an economic objective function for low temperature geothermal ORC, analyzed four fluids, namely ammonia, HCFC123, pentane and PF5050, and obtained the result that ammonia was the economy optimal fluid while the wet fluid property was its disadvantage. Chen [7] made theoretical research on HCFC123 subcritical ORC and carbon dioxide transcritical Rankine Cycle and pointed that dioxide transcritical Rankine Cycle had advantage of good temperature matching in the heater. Drescher [8] and Delgado-Torres [9] applied ORC in biomass cogeneration and desalination system, respectively.…”

Section: Introductionmentioning

confidence: 99%

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Pan

Wang

2013

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Pan

Wang

2013

Applied Thermal Engineering

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“…The cycle working fluid, carbon dioxide, is a non-toxic and non-combustible material [3]. Another advantage of CO 2 is the sudden change of its thermophysical properties at its near critical point.…”

Section: Introductionmentioning

confidence: 99%

Thermoeconomic Analysis and Optimization of a New Combined Supercritical Carbon Dioxide Recompression Brayton/Kalina Cycle

2016

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Abstract:A new combined supercritical CO 2 recompression Brayton/Kalina cycle (SCRB/KC) is proposed. In the proposed system, waste heat from a supercritical CO 2 recompression Brayton cycle (SCRBC) is recovered by a Kalina cycle (KC) to generate additional electrical power. The performances of the two cycles are simulated and compared using mass, energy and exergy balances of the overall systems and their components. Using the SPECO (Specific Exergy Costing) approach and employing selected cost balance equations for the components of each system, the total product unit costs of the cycles are obtained. Parametric studies are performed to investigate the effects on the SCRB/KC and SCRBC thermodynamic and thermoeconomic performances of key decision parameters. In addition, considering the exergy efficiency and total product unit cost as criteria, optimization is performed for the SCRBC and SCRB/KC using Engineering Equation Solver software. The results indicate that the maximum exergy efficiency of the SCRB/KC is higher than that of the SCRBC by up to 10%, and that the minimum total product unit cost of the SCRB/KC is lower than that of the SCRBC by up to 4.9%.

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“…R113 and R123 have high performance in low temperature while p-Xylene has low irreversibility in high temperature. Chen et al [15] have compared the CO2 trans-critical power cycle with ORC system using R123. As a result, a trans-critical CO2 power system supply higher power output than the ORC using R123.…”

Section: Introductionmentioning

confidence: 99%

Comparative Thermodynamic Assessment of Various Super- and Trans-Critical Working Fluids for Low Temperature Power Generation Applications

Özcan¹,

Seyitoğlu²

2017

Journal of Polytechnic

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Bu makaleye şu şekilde atıfta bulunabilirsiniz (To cite to this article): Ozcan H. and Seyıtoglu S. S., "Comparative thermodynamic assessment of various super-and trans-critical working fluids for low temperature power generation applications", Politeknik Dergisi, 20(4): 915-921, (2017). Politeknik Dergisi, 2017; 20 (4) : 915-921 Journal of Polytechnic, 2017; 20 (4) ABSTRACTRecently, energy need is exponentially increasing in the world while energy sources are decreasing rapidly. Therefore, this issue requires energy sources to be used more efficiently and urges professionals to utilize energy from low temperature energy sources such as waste heat and low temperature renewable sources. In this study, energy and exergy analyses of several clean working fluids are comparatively studied in several organic Rankine cycle configurations. CO2, N2O, and SF6 fluids are compared with the conventional R23 in three ORC configurations, namely the basic ORC cycle, regenerative ORC cycle, and reheat and regenerative ORC cycle, respectively. Effects of various selected system and environmental parameters on the system performances are comprehensively investigated. Even though R23 shows the best energy and exergy performances than those of other investigated working fluids at low-temperature applications, N2O and CO2 provide a clean solution to high GWP (global warming potential) R23 with similar performance characteristics at low and high temperature power generation applications.Keywords: Organic rankine cycle, energy, exergy, R23, CO2, N2O, SF6. ÖZSon zamanlarda, enerji ihtiyacı dünyada katlanarak artarken enerji kaynakları hızla azalmaktadır. Bu yüzden, bu konu enerji kaynaklarının daha verimli kullanılması ve uzmanları atık ısı ve düşük sıcaklık yenilenebilir enerji kaynakları gibi düşük sıcaklık kaynaklarının kullanmalarını gerektirir. Bu çalışmada, birbirinden farklı temiz akışkanların enerji ve ekserji analizleri farklı organik Rankine çevrim konfigürasyonlarında karşılaştırmalı olarak incelenmiştir. CO2, N2O ve SF6 akışkanları geleneksel R23 akışkanı ile sırasıyla temel organik Rankine çevirimi, ara buhar almalı organik Rankine çevrimi ve ara ısıtmalı-ara buhar almalı organik Rankine çevrimlerinde karşılaştırılmıştır. Çeşitli seçilmiş sistemlerin ve çevresel parametrelerin sistem performanslarına etkileri kapsamlı olarak incelenmiştir.Anahtar Kelimeler: Organik rankine çevrimi, enerji, ekserji, R23, CO2, N2O, SF6.

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A comparative study of the carbon dioxide transcritical power cycle compared with an organic rankine cycle with R123 as working fluid in waste heat recovery

Cited by 318 publications

References 10 publications

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Thermoeconomic Analysis and Optimization of a New Combined Supercritical Carbon Dioxide Recompression Brayton/Kalina Cycle

Comparative Thermodynamic Assessment of Various Super- and Trans-Critical Working Fluids for Low Temperature Power Generation Applications

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