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Topic-based study materials for Advanced Thermodynamics and Thermoeconomics in the Energy Engineering degree programme at Politecnico di Milano. The document covers: LANDSON2 PhysicalandChemicalExergy Exercise1 Assumingthat Systemoperatesatsteadystate SystemboundariesarerigidSystemboundariesareadiabatic Negligiblechangesinkineticandpotential energiesofthebulkflows Misins Maybalance Wtnihehe Energybalance insasa Sire Entropybalance Exinexex

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Topic-based study materials for Advanced Thermodynamics and Thermoeconomics in the Energy Engineering degree programme at Politecnico di Milano. The document covers: LANDSON2 PhysicalandChemicalExergy Exercise1 Assumingthat Systemoperatesatsteadystate SystemboundariesarerigidSystemboundariesareadiabatic Negligiblechangesinkineticandpotential energiesofthebulkflows Misins Maybalance Wtnihehe Energybalance insasa Sire Entropybalance Exinexex

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LANDSON2 PhysicalandChemicalExergy Exercise1 Assumingthat Systemoperatesatsteadystate SystemboundariesarerigidSystemboundariesareadiabatic Negligiblechangesinkineticandpotential energiesofthebulkflows Misins Maybalance Wtnihehe Energybalance insasa Sire Entropybalance Exinexex Excia Exergybalance Assumingperfectgasmodelfordryair hahaCpTzTz sa sa CphIIRh exsexzhaheTosasa GT2T2TolphIfRhf wtWh haha CpTeE 85K51g ex ex CpTzTTpin RhPE 112K Éxjmiletsex Expes I etolesW ex ex 27KJKg wtheheCpTzTe Miso Wise WEhasheGT2is Ta Putcont I ftpjit.T aisoTaPEv RI 310K 8IEWIRERR ER 114 Functional exergy efficiency is a bit higher with respect to the isentropic one. The two indicators have a different meaning. The eta_ex is the ratio between the work obtained and the work theoretically obtainable considering the properties of the bulk flow in the two conditions (state 1 and state 2) compared to the environmental state. On the other hand the isentropic efficiency is the ratio between the work obtained and the work theoretically obtained performing an ideal isentropic expansion till the state 2_iso thus introducing another end of expansion condition, different from state 2. WtCpTa i s oT2 116,5KJ MisaWE0,742 My wt extexz J etaly etsex 924 efficiency defect The heat recovered from the CHP is entirely absorbed by the mass flow rate of the hot stream, for which both the heat of vaporization and the mass flow rate are known. Exercise2 Fultain Fuelair Romb ap me Raine Hp InExacey If areto WR Etw p Iout E Ia dogwinSheep 1200kW heatrecoveredfromCHP Reg0,6Qomb Round2000KW ombLHVwomb momb01043Kyls MILamp isW500kW COPROf Qc1250kW hiCpiTr Tout mic 72hMys Assumptions Steadystateoperation Negligiblechangesinkineticandpotentialenergyforall themanflowrates HeatlossescrossthesystemboundariesatToTheyhave…

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