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ORC for Power Generation Low Temperature Geothermal Heat Source

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ORC for Power Generation Low Temperature Geothermal Heat Source ( orc-power-generation-low-temperature-geothermal-heat-source )

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hot source outlet temperature). The plant second law efficiency, cycle second law efficiency and recovery second law efficiency are related according to Equations. 4-5-6. Where πΈΜ‡π‘šπ‘Žπ‘₯ is the maximum exergy flow rate that can be extracted from the hot source (if the hot source stream is cooled down to ambient conditions, T0=15 oC and p0=1.013 bar). All these equations were applied to the list of working fluids which have been studied (see Table 2). The first law efficiency can be defined as: Μ‡ π‘Š Μ‡ Where 𝑄𝑖𝑛,π‘šπ‘Žπ‘₯ is the maximum heat flow rate that can Table Μ‡ 𝑛𝑒𝑑 πœ‚πΌπΌ.𝑐𝑦𝑐𝑙𝑒 = π‘Š (4) 𝐸̇ 𝑖𝑛 πœ‚πΌπΌ.π‘Ÿπ‘’π‘ = 𝐸̇𝑖𝑛 (5) 𝐸̇ π‘š π‘Ž π‘₯ Μ‡ π‘Š 2. List of studied and simulated working fluids πœ‚πΌ.π‘π‘™π‘Žπ‘›π‘‘ = 𝑛𝑒𝑑 (7) 𝑄̇ 𝑖𝑛,π‘šπ‘Žπ‘₯ πœ‚πΌπΌ.π‘π‘™π‘Žπ‘›π‘‘ = 𝑛𝑒𝑑 = πœ‚πΌπΌ.𝑐𝑦𝑐𝑙𝑒 Β· πœ‚πΌπΌ.π‘Ÿπ‘’π‘ (6) πΈΜ‡π‘šπ‘Žπ‘₯ be extracted from the hot source 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Chemical name Methyl alcohol Ethyl alcohol Ethane Propane 2-Methylpropane Butane 2,2-Dimethylpropane 2-Methylbutane Pentane 2-Metylpentane Hexane Heptane Propene 2-Methyl-1-propene Ethylethylene Cis-2-butene Propyne Benzene Methylbenzene Dimethyl carbonate Cyclopropane Cyclopentane Cyclohexane Dimethylether Fluoromethane Difluoromethane 1,1,1,2-Tetrafluoroethane Fluoroethane 1,1-Difluoroethane 1,1,1,3,3-Pentafluoropropane 1,1,2,2,3-Pentafluoropropane 1,1,1,3,3-Pentafluorobutane 2,3,3,3-Tetrafluoroprop-1-ene Trans-1,3,3,3-tetrafluoropropene Propanone Hexamethyldisiloxane Carbon Dioxide Ammonia H2O DOI: 10.3384/ecp17138251 Alternative name Methanol Ethanol R170 R290 Isobutane – R600a R600 Neopentane Isopentane – R601a R601 Isohexane - - Propylene – R1270 Isobutene 1-Butene Cis-butene - Benzol Toluene DMC - - - DME R41 R32 R134a R161 R152a R245fa R245ca R365mfc R1234yf R1234ze Acetone MM CO2 – R744 R717 R718 Proceedings of the 58th SIMS September 25th - 27th, Reykjavik, Iceland Class Alcohol Alcohol Alkane Alkane Alkane Alkane Alkane Alkane Alkane Alkane Alkane Alkane Alkene Alkene Alkene Alkene Alkyne Aromatic Aromatic Carbonate ester Cycloalkane Cycloalkane Cycloalkane Ether HFC HFC HFC HFC HFC HFC HFC HFC HFO HFO Ketone Linear Siloxane Inorganic Inorganic Inorganic Tcrit/Thot,in 1.3038 1.3092 0.7766 0.9408 1.0373 1.0813 1.1032 1.1709 1.1947 1.2659 1.2917 1.3739 0.9283 1.0634 1.0665 1.1084 1.0235 1.4295 1.5052 1.4168 1.0131 1.3016 1.4081 1.0184 0.8070 0.8934 0.9518 0.9545 0.9829 1.0865 1.1384 1.1700 0.9356 0.9729 1.2924 1.3193 0.7736 1.0312 1.6459 255

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