Rayendra, Ridho (2017) Uji Kaji Alat Praktikum Compact Heat Exchanger Tipe Tube Wavy Fin. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dewasa ini heat exchanger type compact sering digunakan di dunia industri karena memiliki banyak keuntungan yang dimilikinya, antara lain adalah konstruksinya sederhana dan kokoh, biaya yang relatif murah, kemampuannya bekerja pada tekanan dan temperatur yang tinggi juga tidak membutuhkan tempat yang luas. Objek pengamatan pada praktikum tersebut adalah compact heat exchanger. Jurusan Teknik Mesin ITS telah memiliki alat uji Compact heat exchanger produksi PT. Guntner Indonesia, namun sudah lama tidak digunakan. Studi eksperimen kali ini ingin membangun kembali alat tersebut agar dapat digunakan dalam praktikum selanjutnya. Rangkaian uji performa dari compact heat exchanger tersebut membutuhkan tahap persiapan alat uji, kelayakan alat uji, tahap pengambilan data dan pengolahan data.
Penelitian ini mengkaji pengujian compact heat exchanger dengan tipe tube and wavy fin. Perancangan test rig meliputi wind tunnel sebagai chanel untuk mengalirkan udara dan udara yang masuk wind tunnel ini akan diarahkan terlebih dahulu melalui flow straightener agar didapatkan aliran udara yang uniform. Heat exchanger dioperasikan dengan fluida oli panas yang dialirkan melalui tubes dengan variasi kecepatan aliran debit oli yaitu 13 lpm, 15.5 lpm dan 20 lpm dan fluida dingin udara yang dialirkan oleh electrical fan, variasi kecepatan aliran udara yaitu 3.6 m/s, 2.8 m/s dan 1.5 m/s kecepatan maksimum exhaust fan. Kecepatan udara yang mengalir diukur menggunakan flowmeter. Untuk pengukuran temperatur pada fluida panas, fluida dingin dan temperatur fin akan digunakan thermocouple pada tube sebanyak 9 titik yang terhubung ke akuisisi data yakni Arduino Uno.
Dari hasil penelitian ini didapatkan sebuah perangkat praktikum compact heat exchanger menggunakan sistem data akuisisi arduino dengan termokopel tipe K sejumlah 9 buah sebagai sensor suhu. Hasil pengujian heat exchanger didapatkan besar perbedaan laju perpindahan panas antara aliran fluida panas dan dingin tidak lebih dari 10%, nilai perpindahan panas terbesar pada variasi debit oli 20 liter/menit dengan kecepatan udara 3.6 m/s yaitu sebesar 5088.08 W, nilai overall heat transfer coefficient terbesar pada variasi debit oli 20 liter/menit dengan kecepatan udara 3.6 m/s yaitu sebesar 185.74 W/K, nilai pressure drop terbesar aliran udara pada variasi debit oli 20 Liter/menit dan kecepatan udara 3.6 m/s yaitu sebesar 40 Pa.
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Nowadays compact heat exchangers are often used
in many industries because it has many advantages, among
others, is simply and sturdy construction, a relatively low
cost, ability to work at high pressures and high temperatures
also do not need a large place. The object of observation is a
compact heat exchanger. Department of Mechanical
Engineering ITS has already own the Compact heat
exchanger production of PT. Guntner Indonesia, but has not
been used lately. Experimental studies this time to rebuild the
tool to be used for the next research. The series of
performance test of compact heat exchanger requires the
preparation phase test equipment, test equipment feasibility,
stage of data collection and data processing.
This study examines the testing of compact heat
exchanger with wavy fin and tube type. The design of wind
tunnel test rig includes a channel for air flow and air entering
the wind tunnel will be routed first through a flow
straightener in order to obtain uniform air flow. Heat
exchanger operated with fluid hot oil flowed through the
tubes with a variation of the flow rate of discharge of oil at
13 lpm, 15.5 lpm and 20 lpm and cold fluid air delivered by
electrical fan, variations in air flow rate is 1.5 m / s, 2.8 m / s and 3.6 m / s the maximum speed exhaust fan. Free flowing
air was measured using a flowmeter. For the measurement of
the temperature on the hot fluid, cold fluid and fin
temperature at the thermocouple tube to be used as much as
9 points that are connected to the data acquisition Arduino
Uno.
From the results of this study found a practical device
compact heat exchanger using arduino data acquisition system
with a K type thermocouple as a temperature sensor input digital
of 9 pieces. The test results obtained heat exchanger large
differences in rates of heat transfer between hot and cold fluid flow
is not more than 10%, the largest value of heat transfer on the
variation of discharge of oil 20 liters / min with air velocity of 3.6
m / s is equal to 5088.08 W, the value of overall the heat transfer
coefficient on the variation of the oil flow of 20 liters / minute air
velocity of 3.6 m / s in the amount of 185.74 W / K, the value of the
largest pressure drop air flow in the variation of the oil discharge
20 liters / min and air speed of 3.6 m / s that is equal to 40 Pa.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Penukar Panas Compact; Laju Perpindahan; Panas; Uji Performansi; Compact; Test Rig; Compact heat exchangers; heat transfer rate; Test Performance |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | - RIDHO RAYENDRA |
| Date Deposited: | 11 Apr 2017 02:59 |
| Last Modified: | 08 Mar 2019 03:24 |
| URI: | http://repository.its.ac.id/id/eprint/3395 |
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