Working fluid selection for an Organic Rankine Cycle utilizing high and low temperature energy of an LNG engine

He, Sinian; Chang, Huawei; Zhang, Xiaoqing; Shu, Shuiming; Duan, Chaojun

doi:10.1016/j.applthermaleng.2015.07.039

Cited by 63 publications

(21 citation statements)

References 31 publications

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“…In order to investigate the characteristics of the TLC-ORC, the effects of different working fluids for HT cycle and LT cycle on system performance should be investigated. The selection of ORC working fluids should consider the following criteria [32,[39][40][41].…”

Section: Selection Of Working Fluidsmentioning

confidence: 99%

Investigation of an Innovative Cascade Cycle Combining a Trilateral Cycle and an Organic Rankine Cycle (TLC-ORC) for Industry or Transport Application

et al. 2018

Energies

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An innovative cascade cycle combining a trilateral cycle and an organic Rankine cycle (TLC-ORC) system is proposed in this paper. The proposed TLC-ORC system aims at obtaining better performance of temperature matching between working fluid and heat source, leading to better overall system performance than that of the conventional dual-loop ORC system. The proposed cascade cycle adopts TLC to replace the High-Temperature (HT) cycle of the conventional dual-loop ORC system. The comprehensive comparisons between the conventional dual-loop ORC and the proposed TLC-ORC system have been conducted using the first and second law analysis. Effects of evaporating temperature for HT and Low-Temperature (LT) cycle, as well as different HT and LT working fluids, are systematically investigated. The comparisons of exergy destruction and exergy efficiency of each component in the two systems have been studied. Results illustrate that the maximum net power output, thermal efficiency, and exergy efficiency of a conventional dual-loop ORC are 8.8 kW, 18.7%, and 50.0%, respectively, obtained by the system using cyclohexane as HT working fluid at THT,evap = 470 K and TLT,evap = 343 K. While for the TLC-ORC, the corresponding values are 11.8 kW, 25.0%, and 65.6%, obtained by the system using toluene as a HT working fluid at THT,evap = 470 K and TLT,evap = 343 K, which are 34.1%, 33.7%, and 31.2% higher than that of a conventional dual-loop ORC.

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Section: Selection Of Working Fluidsmentioning

confidence: 99%

Investigation of an Innovative Cascade Cycle Combining a Trilateral Cycle and an Organic Rankine Cycle (TLC-ORC) for Industry or Transport Application

et al. 2018

Energies

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“…These are important for the definition of thermodynamic Technological evolution of ORC systems to produce energy 25 properties, the technical and economic flexibility of a power cycle in a power plant; the selection criteria must meet the system's thermodynamic requirements, compatibility, cost and environmental responsibility [6]. Regarding selection criteria, Duan [7] presented in his research on ORC applications for engine exhaust, that there is a large utility profit for several common refrigerants that would increase the overall energy conversion efficiency of the fuel used. On the other hand, Gou [8] published a study on different working fluids where he concluded that working fluids can demarcate the design of the equipment involved in the cycle (heat exchangers and expanders), other authors have focused on investigating about the thermophysical properties of fluids [9], others in fluid mixtures to improve cycle performance [10].…”

Section: Working Fluidsmentioning

confidence: 99%

Technological evolution of ORC systems to produce energy from residual sources

Zarante¹,

Chamorro²,

Polo³

2018

ces

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This document presents a review of the technological evolution of power generation from residual thermal sources as contemplated by new technologies in ORC (Organic Rankine Cycle) systems, to seek greater efficiencies and lower costs per unit of kw generated. These systems have been improving their thermodynamic performance because of the research regarding the development of their components and the improvements in current applications, since this allows an additional output power generation. The scientific development challenges associated with ORC technology such as workflow, equipment architecture, ORC expanders and applications of these technologies are discussed. It was also found that R245fa is one of the best working fluids in ORC technology because of its low environmental impact but its impact on global warming is still considered an impediment and therefore other alternatives such as the R1233zd are being investigated. Regarding commercial applications of this technology, it was found that there are facilities at a global level that use geothermal energy as a source of heat, followed using residual heat and to a lesser extent biomass.

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“…By using auxiliary thermodynamic cycles operating between seawater as the hot source and LNG as the cold source, a regasification plant may benefit from recovering both the mechanical and thermal exergy available [2]. Rankine Type Cycles (RTC) are the most promising for large scale applications, as discussed in the literature [1][2][3][4][5][6] although other cycles, e.g. the Stirling [7] and Kalina [8] cycles have also been put forward.…”

Section: Introductionmentioning

confidence: 98%

Thermodynamic analysis for working fluids comparison in Rankine-type cycles exploiting the cryogenic exergy in Liquefied Natural Gas (LNG) regasification

Ferreira

Catarino

Vaz

2017

Applied Thermal Engineering

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Working fluid selection for an Organic Rankine Cycle utilizing high and low temperature energy of an LNG engine

Cited by 63 publications

References 31 publications

Investigation of an Innovative Cascade Cycle Combining a Trilateral Cycle and an Organic Rankine Cycle (TLC-ORC) for Industry or Transport Application

Investigation of an Innovative Cascade Cycle Combining a Trilateral Cycle and an Organic Rankine Cycle (TLC-ORC) for Industry or Transport Application

Technological evolution of ORC systems to produce energy from residual sources

Thermodynamic analysis for working fluids comparison in Rankine-type cycles exploiting the cryogenic exergy in Liquefied Natural Gas (LNG) regasification

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