Pengaruh Sudut Louvered Strips Terhadap Laju Perpindahan Panas dan Faktor Gesekan pada Counter Flow Heat Exchanger

Wigraha, NyomanArya (2010) Pengaruh Sudut Louvered Strips Terhadap Laju Perpindahan Panas dan Faktor Gesekan pada Counter Flow Heat Exchanger. Magister thesis, Universitas Brawijaya.

Abstract

Pengaruh turbulator Louvered Strips terhadap laju perpindahan kalor dan faktor gesekan aliran turbulen pada double tube heat exchanger dapat memecah aliran dan mengganggu pola streamline dari fluida yang mengalir ke saluran pipa dalam ( inner tube ) sehingga mengakumulasi aliran turbulensi dan meningkatkan laju perpindahan kalor dalam pipa. Louvered strips memiliki variasi sudut kemiringan ( q = 15°, 25°, 30°) yang terpasang ditengah-tengah pipa bagian dalam dan searah aliran fluida masuk. Laju aliran fluida (air) panas di bagian pipa dalam diteliti dengan interval 400 lt/jam sampai 900 lt/jam dan laju aliran air dingin di bagian pipa luar konstan 900 lt/jam. Data hasil pengujian dari masing – masing sudut kemiringan louvered strips turbulator ini dibandingkan data tanpa louvered strips turbulator ( plain tube ), secara keseluruhan terjadi peningkatan laju perpindahan kalor sebesar 4 % sampai 5 % dari pada tanpa turbulator serta menghasilkan faktor gesekan dari 40 % sampai 57 %. Dengan kenaikan angka Nusselt sebesar 9% sampai 15 %.

English Abstract

Strips of Louvered turbulator influence rate of heat transfer and friction factor in turbulent flow double tube heat exchanger can break down and disrupt flow streamline pattern of fluid that flows into a pipeline in (inner tube) that accumulate flow turbulence and increase rate of heat transfer in apipe. Louvered ( q = 15 °, 25 °, 30 °) are strips have a variation of inclination angle inserted in middle of inner pipe and direction of fluid flow inside. Flow rate of fluid (water) heat in pipes in interval studied with 400 lt / hour to 900 lt / hour and a flow rate of cold water in outer pipe of constant section 900 lt / hour. Data from individual test results - each angle louvered turbulator strips are compared data without louvered turbulator strips (plain tube), overall heat transfer rate increased by 4% to 5% of turbulator, and without producing friction factor from 40% to 57 %. With increase in Nusselt number by 9% to 15%.

Item Type: Thesis (Magister)
Identification Number: TES/621.402 5/WIG/p/041002570
Subjects: 600 Technology (Applied sciences) > 621 Applied physics > 621.4 Prime movers and heat engineering
Divisions: S2/S3 > Magister Teknik Elektro, Fakultas Teknik
Depositing User: Endro Setyobudi
Date Deposited: 23 Dec 2010 11:44
Last Modified: 23 Dec 2010 11:44
URI: http://repository.ub.ac.id/id/eprint/158710
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