STUDI EKSPERIMENTAL PERPINDAHAN PANAS SECARA KONVEKSI PAKSA PADA PIPA TEMBAGA BERBENTUK CIRCULAR

FAHZY, MUHAMMAD CHRISSANDY and Sahim, Kaprawi (2021) STUDI EKSPERIMENTAL PERPINDAHAN PANAS SECARA KONVEKSI PAKSA PADA PIPA TEMBAGA BERBENTUK CIRCULAR. Undergraduate thesis, Sriwijaya University.

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Abstract

This study aims to analyze the heat transfer rate, convection coefficient, and Nusselt number to changes in flow rate for each type of pipe diameter at constant heat flux and flow in the entry length region. The research was conducted using an experimental method on a 1 m long horizontal copper pipe that was fed with ordinary water with a flow rate variation of 20-160 l/h for each type of pipe inner diameter, namely 9,5 mm; 12,7 mm; and 15,88 mm. The surface of the pipe is electrically heated with an AC voltage of 110 V. The heat transfer rate will increase as the flow rate increases in each type of pipe diameter. When Reynolds number is 1000 to 5000, the maximum convection coefficient and Nusselt number obtained by a 15,88 mm diameter pipe are 708,113 W/m2.K and 18,010. While the maximum value obtained for a pipe with a diameter of 12,7 mm are 588,712 W/m2.K and 11,884, and the maximum value for a pipe with a diameter of 9,5 mm are 497,563 W/m2.K and 7,475. The convection coefficient and Nusselt number will increase as Reynolds number increases for each type of pipe diameter. The increase in convection coefficient and Nusselt number is low in laminar flow conditions and will be more obvious and significant when entering turbulent flow conditions. Based on the comparison of the value of the convection coefficient and Nusselt number to the flow conditions, the 15,88 mm diameter pipe has a greater value than other types of pipe diameter, so that the greater the flow rate and the inner diameter of the pipe, the more effective heat transfer occurs. Keywords: Flow rate, diameter, constant heat flux, convection coefficient, Nusselt number.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Debit aliran, diameter, heat flux konstan, koefisien konveksi, Nusselt number
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ255-265 Heat engines > TJ263.T493 Heat exchangers--Congresses. Steam-boilers--Congresses. Fluid dynamics--Congresses. Heat--Transmission--Congresses
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	MUHAMMAD CHRISSANDY FAHZY
Date Deposited:	29 Dec 2021 02:00
Last Modified:	29 Dec 2021 02:00
URI:	http://repository.unsri.ac.id/id/eprint/60104

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