Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-20408
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dc.contributor.authorBrenner, Lorenz-
dc.contributor.authorTillenkamp, Frank-
dc.contributor.authorGhiaus, Christian-
dc.date.accessioned2020-08-31T07:52:06Z-
dc.date.available2020-08-31T07:52:06Z-
dc.date.issued2020-08-01-
dc.identifier.issn0360-5442de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/20408-
dc.description.abstractExergy analysis has been widely used to assess refrigeration systems by evaluating exergy losses or exergy efficiency. The latter is mostly used as an indicator to determine the system performance, which requires the comparison of the actual system with its idealized reversible version, but not the practical achievable efficiency. Therefore, a practice-oriented evaluation method for refrigeration plants in free cooling operation is proposed, based on exergy analysis and technical standards as baseline. By considering the exergy input of auxiliary devices, the overall design of hydraulic circuits can be assessed on subsystem level. The achievable optimization potential compared to the state of the art in technology and the performance is revealed with the introduced optimization potential index (OPI). The application is demonstrated on a case study, where the analysis reveals an adequate operation of the field plant in general. Most cooling locations show potential for improvement, which is indicated by an OPI superior to zero. Moreover, the auxiliary electrical exergy input shows the same magnitude as the thermal exergy input, which emphasizes the importance of reducing the electrical energy usage of auxiliary devices in refrigeration plants to increase the performance.de_CH
dc.language.isoende_CH
dc.publisherElsevierde_CH
dc.relation.ispartofEnergyde_CH
dc.rightshttp://creativecommons.org/licenses/by/4.0/de_CH
dc.subjectOptimization potential assessment methodde_CH
dc.subjectExergy analysisde_CH
dc.subjectRefrigeration plantsde_CH
dc.subjectFree coolingde_CH
dc.subjectOptimization potential indexde_CH
dc.subjectOPIde_CH
dc.subject.ddc621.04: Energietechnikde_CH
dc.titleExergy performance and optimization potential of refrigeration plants in free cooling operationde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitut für Energiesysteme und Fluid-Engineering (IEFE)de_CH
dc.identifier.doi10.1016/j.energy.2020.118464de_CH
dc.identifier.doi10.21256/zhaw-20408-
zhaw.funding.euNode_CH
zhaw.issue118464de_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume209de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
Appears in collections:Publikationen School of Engineering

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