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Polymeric hollow fiber heat exchanger as an automotive radiator

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dc.title Polymeric hollow fiber heat exchanger as an automotive radiator en
dc.contributor.author Krásný, Ivo
dc.contributor.author Astrouski, Ilya
dc.contributor.author Raudenský, Miroslav
dc.relation.ispartof Applied Thermal Engineering
dc.identifier.issn 1359-4311 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2016
utb.relation.volume 108
dc.citation.spage 798
dc.citation.epage 803
dc.type review
dc.language.iso en
dc.publisher Elsevier Ltd.
dc.identifier.doi 10.1016/j.applthermaleng.2016.07.181
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S1359431116313254
dc.subject Calorimeter en
dc.subject Heat exchanger en
dc.subject Heat transfer en
dc.subject Polymeric hollow fiber en
dc.description.abstract Nowadays, different automotive parts (tubing, covers, manifolds, etc.) are made of plastics because of their superior characteristics, low weight, chemical resistance, reasonable price and several other aspects. Manufacturing technologies are already well-established and the application of plastics is proven. Following this trend, the production of compact and light all-plastic radiators seems reasonable. Two plastic heat exchangers were manufactured based on polypropylene tubes of diameter 0.6 and 0.8 mm (so-called fibers) and tested. The heat transfer performance and pressure drops were studied with hot (60 °C) ethyleneglycol-water brine flowing inside the fibers and air (20 °C) outside because these conditions are conventional for car radiator operation. It was observed that heat transfer rates (up to 10.2 kW), overall heat transfer coefficients (up to 335 W/m2 K), and pressure drops are competitive to conventional aluminium finned-tube radiators. Moreover, influence of fiber diameter was studied. It was observed that air-side convective coefficients rise with a decrease of fiber diameter. Air-side pressure drops of plastic prototypes were slightly higher than of aluminium radiator but it is expected that additional optimization will eliminate this drawback. Experimentally obtained air-side heat transfer coefficients were compared with the theoretical prediction using the Grimson equation and the Churchill and Bernstein approach. It was found that the Grimson equation is sufficient for approximate prediction of the outer HTCs and can be used for engineering calculations. Further work will concentrate on optimizing and developing a polymeric hollow fiber heat exchanger with reduced size, weight and optimized performance and pressure drops. © 2016 Elsevier Ltd en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1006630
utb.identifier.obdid 43875031
utb.identifier.scopus 2-s2.0-84980390249
utb.identifier.wok 000384783000077
utb.identifier.coden ATENF
utb.source j-scopus
dc.date.accessioned 2016-10-25T12:38:00Z
dc.date.available 2016-10-25T12:38:00Z
dc.description.sponsorship MEYS under National Sustainability Programme I [LO1202]
utb.contributor.internalauthor Krásný, Ivo
utb.fulltext.affiliation Ivo Krásný a, ⇑ , Ilya Astrouski b , Miroslav Raudenský b a Tomas Bata University in Zlin, Faculty of Technology, Inst. Foodstuff Technology, nam. T.G. Masaryka 275, Zlin, Czech Republic b Brno University of Technology, Faculty of Mechanical Engineering, Heat Transfer and Fluid Flow Laboratory, Technicka 2896/2, 616 69 Brno, Czech Republic ⇑ Corresponding author. E-mail addresses: krasny@ft.utb.cz (I. Krásny ́), astrouski@LPTaP.fme.vutbr.cz (I. Astrouski), raudensky@fme.vutbr.cz (M. Raudensky ́).
utb.fulltext.dates Received 1 April 2016 Revised 28 June 2016 Accepted 28 July 2016 Available online 29 July 2016
utb.fulltext.sponsorship The theoretical work leading to these results has received funding from the MEYS under the National Sustainability Programme I (Project LO1202).
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