Management of low grade waste heat from the supercritical power plant using the ORC installation aided by bleed steam

dc.contributor.authorMikielewicz, D.
dc.contributor.authorWajs, J.
dc.contributor.authorMikielewicz, J.
dc.date.accessioned2014-12-15T07:52:24Z
dc.date.available2014-12-15T07:52:24Z
dc.date.issued2012
dc.description.abstractPaper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_ZA
dc.description.abstractIn the paper presented is a novel concept to utilize the heat from the turbine bleed to improve the quality of working fluid vapour in the bottoming ORC installation. That is a completely novel solution in the literature, which contributes to the increase of ORC efficiency and the overall efficiency of the combined system of the power plant and ORC plant. Calculations have been accomplished for the case when available is a flow rate of low enthalpy hot water at a temperature of 90°C, which is used for preliminary heating of the working fluid. That hot water is obtained as a result of conversion of exhaust gases in the power plant to the energy of hot water. Then the working fluid is further heated by the bleed steam to reach 120°C. Such vapour is subsequently directed to the turbine. In the paper 5 possible working fluids were examined, namely R134a, MM, MDM, toluene and ethanol. In all cases the ethanol proved to be best performing fluid of all. Results are compared with the “stand alone” ORC module showing its superiorityen_ZA
dc.description.librariandc2014en_ZA
dc.format.extent8 pagesen_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationMikielewicz, D, Wajs, J & Mikielewicz, J 2012, Management of low grade waste heat from the supercritical power plant using the ORC installation aided by bleed steam, Paper presented to the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_ZA
dc.identifier.isbn9781868549863
dc.identifier.urihttp://hdl.handle.net/2263/43028
dc.language.isoenen_ZA
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.relation.ispartofHEFAT 2012en_US
dc.rightsUniversity of Pretoriaen_ZA
dc.subjectTurbine bleeden_ZA
dc.subjectORCen_ZA
dc.subjectORC installationen_ZA
dc.subjectORC efficiencyen_ZA
dc.subjectBleed steamen_ZA
dc.subjectWorking fluidsen_ZA
dc.subjectLow grade waste heaten_ZA
dc.titleManagement of low grade waste heat from the supercritical power plant using the ORC installation aided by bleed steamen_ZA
dc.typePresentationen_ZA

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