Thermodynamic and economic performances optimization of an organic Rankine cycle system utilizing exhaust gas of a large marine diesel engine

Yang, Min‐Hsiung; Yeh, Rong‐Hua

doi:10.1016/j.apenergy.2015.03.083

Cited by 152 publications

(50 citation statements)

References 34 publications

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“…ORCs also have been investigated to find a maximum work output from various combination thermodynamic cycles, such as recovering exhaust heat from the gas turbine [9], the high-temperature gas-cooled reactors [10], and the large marine diesel engine applications [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on low-temperature organic Rankine cycle utilizing scroll type expander

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Experimental study on low-temperature organic Rankine cycle utilizing scroll type expander

et al. 2015

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“…For relatively low, medium and high temperature heat sources, R245fa by Domingues et al [4], ethanol by Larsen et al [5] and MM by Fernandez et al [6] has been suggested. Additionally, with emphasis on environment, R1234yf was indicated optimal from a thermo-economic approach by Yang et al [7]. Experimental results with efficiencies approaching 80% with scroll expander by Wang et al [8], 70% with screw expander by Zhang et al [9] and 65% with piston expander by Seher et al [10] have been presented.…”

Section: Introductionmentioning

confidence: 91%

Organic Rankine cycle – review and research directions in engine applications

Panesar

2017

E3S Web Conf.

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Abstract. Waste heat to power conversion using Organic Rankine Cycles (ORC) is expected to play an important role in CO2 reductions from diesel engines. Firstly, a review of automotive ORCs is presented focusing on the pure working fluids, thermal architectures and expanders. The discussion includes, but is not limited to: R245fa, ethanol and water as fluids; series, parallel and cascade as architectures; dry saturated, superheated and supercritical as expansion conditions; and scroll, radial turbine and piston as expansion machines. Secondly, research direction in versatile expander and holistic architecture (NOx + CO2) are proposed. Benefits of using the proposed unconventional approaches are quantified using Ricardo Wave and Aspen HYSYS for diesel engine and ORC modelling. Results indicate that, the implementation of versatile piston expander tolerant to two-phase and using cyclopentane can potentially increase the highway drive cycle power by 8%. Furthermore, holistic architecture offering complete utilisation of charge air and exhaust recirculation heat increased the performance noticeably to 5% of engine power at the design point condition.

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“…The configurations of the ORC process used in this study were both a simple layout and a layout including a recuperator. Yang and Yeh [10,11] considered environmentally-friendly fluids for an ORC unit utilizing heat from the main engine jacket water [10] and ORC units in recuperated and non-recuperated configurations for utilization of exhaust gas heat [11]. Other studies indicated that ORC units in cascade/dual-loop [12][13][14] and two-stage [15] configurations achieved higher performance than single ORC units for recovery of heat from multiple marine engine waste heat sources [12,15] and for recovery of exhaust gas heat only [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…The studies mentioned above [9][10][11][12][13][14][15] considered the design point performance of the WHR units. Although this is a suitable approach for preliminary performance estimations, an off-design analysis must be carried out in order to fully evaluate and compare different WHR unit options by accounting for inherent variations in vessel operation.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Organic and Steam Rankine Cycle Power Systems for Waste Heat Recovery on Large Ships

2017

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This paper presents a comparison of the conventional dual pressure steam Rankine cycle process and the organic Rankine cycle process for marine engine waste heat recovery. The comparison was based on a container vessel, and results are presented for a high-sulfur (3 wt %) and low-sulfur (0.5 wt %) fuel case. The processes were compared based on their off-design performance for diesel engine loads in the range between 25% and 100%. The fluids considered in the organic Rankine cycle process were MM(hexamethyldisiloxane), toluene, n-pentane, i-pentane and c-pentane. The results of the comparison indicate that the net power output of the steam Rankine cycle process is higher at high engine loads, while the performance of the organic Rankine cycle units is higher at lower loads. Preliminary turbine design considerations suggest that higher turbine efficiencies can be obtained for the ORC unit turbines compared to the steam turbines. When the efficiency of the c-pentane turbine was allowed to be 10% points larger than the steam turbine efficiency, the organic Rankine cycle unit reaches higher net power outputs than the steam Rankine cycle unit at all engine loads for the low-sulfur fuel case. The net power production from the waste heat recovery units is generally higher for the low-sulfur fuel case. The steam Rankine cycle unit produces 18% more power at design compared to the high-sulfur fuel case, while the organic Rankine cycle unit using MM produces 33% more power.

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Thermodynamic and economic performances optimization of an organic Rankine cycle system utilizing exhaust gas of a large marine diesel engine

Cited by 152 publications

References 34 publications

Experimental study on low-temperature organic Rankine cycle utilizing scroll type expander

Experimental study on low-temperature organic Rankine cycle utilizing scroll type expander

Organic Rankine cycle – review and research directions in engine applications

A Comparison of Organic and Steam Rankine Cycle Power Systems for Waste Heat Recovery on Large Ships

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