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dc.contributor.authorYaningsih, Indri
dc.contributor.authorIstanto, Tri
dc.date.accessioned2013-12-20T10:03:13Z
dc.date.available2013-12-20T10:03:13Z
dc.date.issued2013-12-05
dc.identifier.citationChang, S.W., Jan, Y.J., Liou, J.S., (2007), “Turbulent heat transfer and pressure drop in tube fitted with serrated twisted tape”, International Journal of Thermal Sciences, Vol. 46, pp. 506–518 Chang, S.W., Yang, T.L., Liou, J.S., (2007), “Heat transfer and pressure drop in tube with broken twisted tape insert”, Experimental Thermal and Fluid Science, Vol. 32, pp. 489–501 Chang, S.W., Lees, A.W., Chang, H.T., (2009), “Influence of spiky twisted tape insert on thermal fluid performances of tubular air–water bubbly flow”, International Journal of Thermal Sciences, Vol. 48, pp. 2341–2354 Eiamsa-ard, S., Promvonge, P., (2010), “Thermal characteristics in round tube fitted with serrated twisted tape”, Applied Thermal Engineering, Vol. 30, pp. 1673-1682 Eiamsa-ard, S., Seemawute, P., Wongcharee, K., (2010), “Influences of peripherally-cut twisted tape insert on heat transfer and thermal performance characteristics in laminar and turbulent tube flows”, Experimental Thermal and Fluid Science, Vol. 34, pp. 711–719 Eiamsa-ard, S., Promvonge, P., (2010), “Performance assessment in a heat exchanger tube with alternate clockwise and counter-clockwise twisted-tape inserts”, International Journal of Heat and Mass Transfer, Vol. 53 pp. 1364–1372 Incropera, F.P. and DeWitt, D.P., (2006), “Fundamentals of Heat and Mass Transfer”, 6 th ed, John Willey and Sons, New York Istanto, T., Juwana, W.E., Yaningsih, I., (2011), “Pengujian karakteristik perpindahan panas dan faktor gesekan pada penukar kalor pipa konsentrik dengan classic twisted tape insert dan perforated twisted tape insert”, Proceeding Seminar Nasional Thermofluid 2011, Jurusan Teknik Mesin dan Industri, Fakultas Teknik UGM Yogyakarta Istanto, T., Juwana, W.E., (2012), “Pengujian karakteristik perpindahan panas dan faktor gesekan pada penukar kalor pipa konsentrik dengan straight dan oblique delta winglet twisted tape insert”, Prosiding Seminar Nasional Teknik Mesin 7, Jurusan Teknik Mesin Fakultas Teknologi Industri, UK Petra Surabaya Sarma, P.K., Subramanyam, T., Kishore, P.S., Dharma Rao, V., Kakac, S, (2002), “A new method to predict convective heat transfer in a tube with twisted tape inserts for turbulent flow”, International Journal of Thermal Sciences, Vol. 41, pp. 955–960 Seemawute, P., Eiamsa-ard, S., (2010), “Thermohydraulics of turbulent flow through a round tube by a peripherally- cut twisted tape with an alternate axis, International Communications in Heat and Mass Transfer, Vol. 37 pp. 652–659 Yaningsih, I., Istanto, T., (2013), “Studi eksperimental karakteristik perpindahan panas dan faktor gesekan pada penukar kalor pipa konsentrik dengan perforated, notched dan jagged twisted tape insert”, Prosiding Seminar Nasional Teknoin 2013, Fakultas Teknologi Industri Universitas Islam Indonesia Yogyakartaen_US
dc.identifier.issn1412-9612
dc.identifier.urihttp://hdl.handle.net/11617/4061
dc.description.abstractAbstract Effect of peripherally-cut twisted tape insert with alternate axis (PT-A) on heat transfer, friction factor and thermal performance characteristics in the inner tube of a concentric tube heat exchanger is investigated. For comparison, the experiments using a peripherally-cut twisted tape insert (PT), a typical twisted tape insert (TT) and a plain tube are also tested in similar conditions. All twisted tape used are twisted at constant twist pitch of 50.3 mm, corresponding to a constant twist ratio of 4.0. Test runs are conducted using water as a testing fluid with Reynolds number range between 5800 and 21,500. The result show that heat transfer rate and friction factor associated by all twisted tape insert consistently higher than those plain tube. Under the similar conditions, heat transfer rate, friction factor as well as thermal performance in the inner tube fitted with PT-A are consistently higher than those in the inner tube equipped with PT, TT and also in the plain tube. Mean values of Nusselt number and friction factor given by PT-A are respectively, 94.37% and 414.2% higher than those in the plain tube, 32.40% and 119.3% higher than those in TT, and 31.95% and 80.8% higher than those in PT. In the present Reynolds number range tested, the PT-A, PT and TT offer the maximum thermal performances at constant pumping power of 1.37, 1.23 and 1.13, respectively.en_US
dc.publisherUniversitas Muhammadiyah Surakartaen_US
dc.subjectfriction factoren_US
dc.subjectNusselt Numberen_US
dc.subjectperipherally-cut twisteden_US
dc.subjecttape with alternate-axisen_US
dc.subjectReynolds numberen_US
dc.titleStudi Eksperimental Karakteristik Perpindahan Panas dan Faktor Gesekan pada Penukar Kalor Pipa Konsentrik dengan Peripherally-Cut Twisted Tape Insert with Alternate-Axisen_US
dc.typeArticleen_US


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