2013
DOI: 10.1016/j.applthermaleng.2012.08.056
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Evaluation of isopentane, R-245fa and their mixtures as working fluids for organic Rankine cycles

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Cited by 114 publications
(44 citation statements)
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“…In the context of geothermal applications, several case studies are performed for zeotropic mixtures as ORC working fluids considering subcritical and transcritical cycles [11][12][13]. More comprehensive analyses including sensitivity for crucial parameters, like mixture composition, heat source temperature or temperature difference of the cooling media are recently performed [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. In general, results confirm the potential for an increase in efficiency of ORC systems by the use of zeotropic mixtures as working fluids.…”
Section: Introductionmentioning
confidence: 60%
“…In the context of geothermal applications, several case studies are performed for zeotropic mixtures as ORC working fluids considering subcritical and transcritical cycles [11][12][13]. More comprehensive analyses including sensitivity for crucial parameters, like mixture composition, heat source temperature or temperature difference of the cooling media are recently performed [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. In general, results confirm the potential for an increase in efficiency of ORC systems by the use of zeotropic mixtures as working fluids.…”
Section: Introductionmentioning
confidence: 60%
“…The pure working fluids on the other hand will produce slightly less power but with the advantage of smaller sized process units and at considerably lower costs. Previous research efforts into the deployment of working-fluid mixtures (multi-component working fluids) in ORC systems [2][3][4][5][7][8][9][11][12][13]15,18,34,43] have generally considered the thermodynamic benefits of such mixtures in comparison with pure (single component) working fluids, and as exemplified earlier with the results in Section 3.1, the mixtures do give better performance (in terms of net power output and/or thermal/exergy efficiencies) than the pure fluids. These mixtures have, however, been shown to suffer a deterioration in their heat transfer performance especially during the phase-change processes.…”
Section: Multi-objective Cost-power Optimizationmentioning
confidence: 90%
“…The selection of working fluids for ORC systems has received attention recently, including a particular interest in multi-component fluid mixtures, due to the opportunities they offer in improving thermodynamic performance. Various authors have performed investigations to demonstrate and quantify these benefits, which have shown that fluid mixtures and pure fluids at supercritical pressures can achieve an improved thermal match with the heat source (i.e., a reduced average temperature-difference) compared to the isothermal profile of the (isobaric, sub-critical) evaporation of pure-component fluids, thereby reducing exergy losses due to heat transfer, and increasing thermal and exergy efficiencies [2][3][4][5][6].…”
Section: Introductionmentioning
confidence: 99%
“…Recently many other studies showed the selection of working fluids was very important for the ORC system performance, see for example Bao and Zhao (2014), Cho et al (2014) or Garg et al (2013). Rayegan et al (2011) who developed a procedure to compare the thermodynamic properties of working fluids under similar working conditions.…”
Section: Selection Of Appropriate Working Fluid For Orc Installationmentioning
confidence: 99%