Performance analysis of double organic Rankine cycle for discontinuous low temperature waste heat recovery

Wang, Dongxiang; Ling, Xiang; Peng, Hao

doi:10.1016/j.applthermaleng.2012.04.017

Cited by 81 publications

(32 citation statements)

References 24 publications

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“…In the present paper, the highest turbine inlet temperature is 276.9 ºC. Wang et al [48] show that acetone exhibits the lowest exergy destruction in the overall ORC for low-temperature waste heat recovery.…”

Section: Resultsmentioning

confidence: 96%

Multi-objective optimization of organic Rankine cycles for waste heat recovery: Application in an offshore platform

Pierobon

Nguyen

Larsen

et al. 2013

Energy

171

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Section: Resultsmentioning

confidence: 96%

Multi-objective optimization of organic Rankine cycles for waste heat recovery: Application in an offshore platform

Pierobon

Nguyen

Larsen

et al. 2013

Energy

171

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“…Kerme and Orfi [7] modeled ORC driven by parabolic through solar collectors to investigate the effect of turbine inlet temperature on main energetic and exergetic performance parameters for eight working fluids and o-xylene showed the maximum energetic and exergetic performance. Wang et al [8] analyzed a double ORC for discontinuous waste heat recovery. Wang et al [9] optimized the working fluid and parameters of ORC system with simulated annealing algorithm.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Basic and Regenerative Organic Rankine Cycles Using Dry Fluids From Waste Heat Recovery

Özdemir¹

2018

Journal of Thermal Engineering

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The organic Rankine cycle (ORC), which generates electric energy using low temperature heat sources, is a promising technology in energy production sector. The ORC, which uses an organic fluid with its lower boiling point and higher vapor pressure than water-steam as a working fluid. The thermal efficiency of an ORC showes the performance of system, depends on system compenents, working fluid and operating conditions. This paper presents an thermodynamics examination of basic ORC and regenerative ORC for waste heat recovery applications using dry organic fluids. R113, R114, R227ea, R245fa and R600a with the boiling points from -16 o C to 48 o C are selected in the analyses. The relationships between the ORC's performance parameters for basic and regenerative technologies and the properties of working fluids are evaluated based on various turbine inlet pressure values. Results show that regenerative ORC has higher thermal efficiency compared with basic ORC. Also, the thermal efficiency increases with the increment of the turbine inlet pressure for both basic ORC and regenerative ORC. Keywords: Energy, Exergy, Working Fluid, Organic Rankine Cycle, Regenerative Organic Rankine Cycle INTRODUCTIONEnergy is one of the most important sources to sustain life. Energy management and diversifying of energy resources are considered a significant way to increase energy efficiency, reduce greenhouse gas emissions and energy costs. Globally, fossil fuels continue to meet a dominant share of global energy demand, with implications for the links between energy, the environment and climate change. About 65% of the world energy consumption is supplied from fossil fuels which are increasingly disappearing and damage the ecology in the world. Consequently, the countries of the world target that renewable energy resources are used in energy conversion technology.Organic Rankine cycle (ORC) which generates electricity from renewable energy resources and waste heat, is an environmentally-friendly technology. The working principal of an ORC is similar to the common vapor Rankine cycle. However, it uses an organic fluid which has high molecular mass hydrocarbon compound, low critical temperature and pressure instead of water-steam as a working fluid. Useable heat resources in ORC are solar energy, geothermal energy, biomass products, surface seawater and waste heat from various thermal processes.Many studies on ORC have been presented in the literature. For example, Liu et al.[1] used total heatrecovery efficiency and heat availability instead of thermal efficiency as the evaluation criteria to optimize the working fluid and operating conditions for organic rankine cycle. Chen et al.[2] compared the system performance between a supercritical Rankine cycle using CO2 as working fluid and a subcritical ORC using R123 as working fluid. Kanoglu and Bolatturk [3] assessed the thermodynamic performance of the Reno (Nevada, USA) binary plant. This plant uses geothermal fluid at 158 o C and isobutene as working fluid. Exergy and energy e...

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“…In utilization of the low temperature heat source, ORC shows great flexibility [1]. There are some low temperature heat sources which can be used for ORC such as solar radiation [2][3][4], geothermal energy [5][6][7], biomass combustion [8][9][10] and industrial waste heat [1,[11][12][13], etc. Recently, some researches about ORC system have been explored [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

The effect of different organic fluids on performances of binary slag washing water power plants

Liu

Dong

et al. 2017

Archives of Thermodynamics

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In this paper, 3 typical organic fluids were selected as working fluids for a sample slag washing water binary power plants. In this system, the working fluids obtain the thermal energy from slag washing water sources. Thus, it plays a significant role on the cycle performance to select the suitable working fluid. Energy and exergy efficiencies of 3 typical organic fluids were calculated. Dry type fluids (i.e., R227ea) showed higher energy and exergy efficiencies. Conversely, wet fluids (i.e., R143a and R290) indicated lower energy and exergy efficiencies, respectively.

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Performance analysis of double organic Rankine cycle for discontinuous low temperature waste heat recovery

Cited by 81 publications

References 24 publications

Multi-objective optimization of organic Rankine cycles for waste heat recovery: Application in an offshore platform

Multi-objective optimization of organic Rankine cycles for waste heat recovery: Application in an offshore platform

Thermodynamic Analysis of Basic and Regenerative Organic Rankine Cycles Using Dry Fluids From Waste Heat Recovery

The effect of different organic fluids on performances of binary slag washing water power plants

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