完整後設資料紀錄
DC 欄位語言
dc.contributor.authorSian, Rony A.en_US
dc.contributor.authorWang, Chi-Chuanen_US
dc.date.accessioned2019-12-13T01:09:53Z-
dc.date.available2019-12-13T01:09:53Z-
dc.date.issued2019-10-01en_US
dc.identifier.issn0140-7007en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.ijrefrig.2019.05.027en_US
dc.identifier.urihttp://hdl.handle.net/11536/153003-
dc.description.abstractA comparative study on the performance of CO2 and R-134a for heat pump clothes drying applications is conducted via a rationally based model. The model comprises unique features such as capability of handling transient behaviours of drying process, freedom from extra constraints normally imposed on heat pump drying modelling and accountability for detailed geometry of the major components. Simulations for both R-134a and CO2 system are performed, validated and further compared to experimental data available in literatures with good agreement. In comparison with R-134a, CO2 dryer yields higher drum outlet air and clothes temperatures, up to 15 degrees C and 6 degrees C, respectively. Yet, increments of 13% and 8% in specific moisture extraction rate (SMER) and coefficient of performance (COP) result on 15% reduction of drying time. Additionally, although subsequent parametric comparison studies on the transient performance of both systems revealed similar effect on system performance subject to same geometrical/operational parameter variation, the analyses also further confirm solid prevalence of the CO2 system over that of R-134a, in terms of COP, SMER and drying time. Finally, a brief discussion regarding pinch analysis is carried out, revealing further potential optimization for the CO2 system regarding heat exchangers. (C) 2019 Elsevier Ltd and IIR. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectTranscritical cycleen_US
dc.subjectCO2en_US
dc.subjectR134aen_US
dc.subjectHeat pump dryeren_US
dc.subjectCOPen_US
dc.subjectSMERen_US
dc.titleComparative study for CO2 and R-134a heat pump tumble dryer - A rational approachen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.ijrefrig.2019.05.027en_US
dc.identifier.journalINTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROIDen_US
dc.citation.volume106en_US
dc.citation.spage474en_US
dc.citation.epage491en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000489835600041en_US
dc.citation.woscount0en_US
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