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ITS » Undergraduate Theses » Teknik Mesin Ekstensi - S1
Posted by dewi007 at 04/12/2008 16:14:43  •  11445 Views


STUDI EKSPERIMENTAL PENGARUH KECEPATAN UDARA DAN BEBAN PANAS TERHADAP UNJUK KERJA ALAT PENUKAR KALOR TIPE TUBE BANK

AN EXPERIMENTAL STUDY ON THE EFFECT AIR VELOCITY AND HEAT LOAD ON THE PERFORMANCE TO A HEAT EXCHANGER TYPE TUBE BANK

Author :
MUHAMMAD PRIMA JAYA 




ABSTRAK

Pada penelitian kali ini karakteristik yang dikaji adalah aliran melintasi Tube bank dimana tube tubenya disusun staggered. Tujuan penelitian ini adalah untuk memahami fenomena fisik susunan tube bank staggered setiap row mengevaluasi karakteristik perpindahan panasnya serta pengaruh kecepatan udara terhadap effektivitas susunan tube staggered dengan variasi voltage heater dan kecepatan udara. Model uji yang digunakan dalam penelitian ini adalah sebuah alat penukar panas bertipe tube bank susunan staggered yang dioperasikan pada kondisi konveksi paksa. Udara sebagai fluida dingin dan air panas sebagai fluida panasnya. Dengan memvariasikan kecepatan udara yaitu 09 ms 16 ms 25 ms dan 32 ms. Serta memvariasikan debit air panas yaitu 75 lpm 10 lpm dan 125 lpm. Data yang diambil dari pengujian adalah kecepatan udara debit air panas temperatur masuk dan keluar dari fluida panas dan dingin baik secara keseluruhan dan row. Hasil yang diperoleh dari penelitian ini adalah karakteristik perpindahan panas dari susunan tube di setiap row. Laju perpindahan panas yang terjadi secara keseluruhan overall yaitu 3948 W pada 10 lpm dengan variasi kecepatan udara 32 ms dan koefisien konveksi udara sebesar 97 Wm2.k . Koefisien perpindahan panas dan laju perpindahan panas yang lebih besar akan terjadi pada baris sebelah dalam yaitu row kedua akibat adanya pengaruh kecepatan udara maksimal. Segmen 4 ditengah tengah HE memiliki nilai yang lebih besar dari pada segmen 8 dekat dengan dinding HE. Peningkatan debit air panas dan kecepatan udara dalam alat penukar panas juga akan menyebabkan peningkatan efektivitas maksimal sebesar 289 dari alat penukar panas tipe tube bank


ABSTRACT

At this research the characteristic which studied isstream get through the Tube bank of where tube tube by staggered compile. This Research target is to comprehend the formation of physical phenomenon of tube bank staggered which each row evaluating the characteristic of heat transfer and also influence of air speed to effektivity the formation of tube staggered with the variation of voltage heater and air speed. The tested model that used in this research is a hot appliance tool whichs have a type of staggered formation tube bank that operated at forced convection condition. The chilled fluid is air and hot water as heat fluid. With the variation of air speed is 0.9 m s 1.6 m s 2.5 m s and 3.2 m s. And also variation of the hot water charge is 7.5 lpm 10 lpm and 12.5 lpm. The data which is taken away from the examination is air speed the hot water charge an incoming temperature and go out from hot fluid and good chilled by through entirety and row. The result from this research is the characteristic of hot transfer from the formation tube in each row. The hot movement transfer that happened as a whole overall is 3948 W at 10 lpm with the variation of air speed is 3.2 m s and the coefficient of air convection equal to 97 W m 2.k. The movement and larger hot Transfer coefficient ones will be happen in side of the line in the second row which effected by the maximal air speed influence existence. The fourth segment in the middle of - HE have larger value than segment 8 close to wall HE. The increasing of hot water debit and air speed in hot appliance will also cause the increasing of maximal effectiveness equal to 28.9 from the type of tube bank hot appliance.



KeywordsEfektivitas; Tube Bank; Staggered; koefisien perpindahan panas; laju perpindahan panas
 
Subject:  Transmisi panas
Contributor
  1. Dr.Ir.Prabowo, M.Eng
Date Create: 04/12/2008
Type: Text
Format: pdf.
Language: Indonesian
Identifier: ITS-Undergraduate-3100008031492
Collection ID: 3100008031492
Call Number: RSM 621.402 2 Jay s


Source
Undergraduate Theses of Mechanical ENgineering, RSM 621.402 2 Jay s, 2008

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