000008749 001__ 8749 000008749 005__ 20141204083517.0 000008749 04107 $$aeng 000008749 046__ $$k12/05/2014 000008749 100__ $$aAstrouski, I. 000008749 24500 $$aPLASTIC HEAT EXCHANGER USING TWISTED HOLLOW FIBERS 000008749 24630 $$n20.$$pEngineering Mechanics 2014 000008749 260__ $$bBrno University of Technology- Institute of Solid Mechanics, Mechatronics and Biomechanics 000008749 506__ $$arestricted 000008749 520__ $$2eng$$aMetallic heat exchangers have a number of well-known disadvantages, such as heavy weight and cost and low resistance to corrosion. Polymeric hollow fiber heat exchangers were proposed about a decade ago as an alternative for low temperature applications. A large-scale heat exchanger was prepared using hollow fibers with a special, “curly” shape. The heat exchanger's thermal performance was studied using hot (40-90°C) ethyleneglycol-water brine flowing inside of the fibers and cool air (20-30°C) flowing across the fibers. Experiments showed that the heat exchanger can achieve a significant heat transfer rate and have high values of overall heat-transfer coefficients (60-230 Wm-2K-1). Moreover, obtained results showed that the classical theory is not suitable to estimate outer convection and that special approach should be used. 000008749 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000008749 653__ $$aHollow fiber, Plastic heat exchanger, Overall heat transfer coefficient. 000008749 7112_ $$aEngineering Mechanics 2014$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2014 000008749 720__ $$aAstrouski, I.$$iRaudensky, M. 000008749 8560_ $$ffischerc@itam.cas.cz 000008749 8564_ $$s528182$$uhttps://invenio.itam.cas.cz/record/8749/files/3-Astrouski-CD.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 3. 000008749 962__ $$r70 000008749 980__ $$aPAPER