Sihombing, Kenan (2014) Analisis Dan Pengujian Karakteristik Performa Cussons Friction Loss In Pipe Apparatus Dan Single Stage Centrifugal Pump : Pompa Dengan Motor Newman Electric Motor 18030V1/5 1,5 Hp ; 2850 RPM. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
CUSSONS friction loss in pipe apparatus adalah salah satu perangkat pengujian head loss perpipaan yang ada di Laboratorium Mekanika dan Mesin – mesin Fluida. Usia alat yang sudah tua serta perawatan yang minim menyebabkan terjadinya penurunan performa dari sistem ini. Untuk dapat mengembalikan fungsi dari fasilitas ini, perlu dilakukan analisis terhadap head loss sistem perpipaan, serta pengujian terhadap performa pompa yang meliputi efisiensi dan karakteristik kerjanya.Sistem perpipaan CUSSONS friction loss in pipe apparatus menggunakan material Polyvinyl Chloride (PVC) pada bingkai dengan dimensi 4,65 m × 0,924 m. Fitting perpipaan terdiri atas long radius elbow 90o, standard radius elbow 90o, elbow 45o, venturimeter, pipa sudden contraction, dan pipa sudden enlargement. Beberapa pressure tap dihubungkan dengan manometer raksa dengan specific gravity (SG) 13,6. Head loss pipa dianalisis menggunakan formulasi Swamee-Jain dan persamaan Darcy Weisbach. Pompa sentrifugal single stageterhubung dengan motor NEWMAN electric motor 1,5 hp, 2850 RPM. Pengujian melibatkan pengukuran tekanan suction dan tekanan discharge pompa menggunakan pressure gauge pada bagian inlet dan outlet. Variasi terhadap debit aliran (Q) dilakukan dengan sistem bypass dan discharge valve. Pompa dapat beroperasi pada kapasitas maksimal 70 L/min yang terukur pada rotameter merk Fisher Controls 2000. Variasi bilangan Reynoldspada aliran turbulen dilakukan pada debit 10 L/min hingga 70 L/min untuk pipa PVC diameter 3/2 in pada line I, debit 10 L/min hingga 60 L/min untuk pipa PVC diameter 3/4 in pada line II, serta debit 10 L/min hingga 50 L/min untuk pipa acrylic diameter 1/2 in hasil modifikasi pada line III, dengan variasi 2 L/min. Analisis terhadap performa sistem ditunjang dengan bantuan software Pipe Flow Expert v5.12.1.1.Dari eksperimen, diperoleh data berupa grafik perbandingan friction factor (f) dan bilangan Reynolds (Re) pada nilai kekasaran relatif (e/D) tertentu dan koefisien losses (KL) dan Re. Nilai e/D untuk masing-masing pipeline juga diperoleh melalui eksperimen. Data hasil eksperimen yang dianalisis menggunakan formulasi Swamee – Jain kemudian dibandingkan dengan analisis software sehingga diperoleh hasil, yakni ηp: 29% - 28,4%; H:17,1 m - 17 m untuk pipeline I, ηp: 26% - 26,2%; H:18,4 m - 18,34 m untuk pipeline II, dan ηp: 25,3% - 23,8%; H:19 m - 19,2 m untuk pipeline III. Penelitian dilakukan dengan variasi bilangan Reynolds (Re) pada aliran turbulen hingga debit maksimal 70 L/min.
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CUSSONS friction loss in pipe apparatus is a piping head loss experiment facility in Fluid Mechanics and Turbo Machinery. An infrequent maintenance and a long term of use lead to a loss in performance of this system. Analysis to the head loss of the piping system and pumping system performance testing are required to restore this facility.CUSSONS friction loss in pipe apparatus was mainly using Polyvinyl chloride (PVC) material for its piping system on a 4,65 m × 0,924 m square frame. Fittings such as long radius elbow 90o, short radius elbow 90o, elbow 45o, venture meter tube, sudden contraction pipe, and sudden enlargement pipe were included. Pressure taps were connected to a U Manometer of mercury with 13,6 specific gravity (SG). Pipe head loss is analyzed with Swamee – Jain formulae and Darcy Weisbach formulae. A single stage centrifugal pump was connected to NEWMAN electric motor 1,5 hp, 2850 RPM. Pumping system examination includes the measurement of suction pressure and discharge pressure using pressure gauges at inlet and outlet sections of the pumping unit. Flow rate was controlled by a bypass system and a discharge valve. The maximum capacity of the pumping unit is 70 L/min, measured using a Fisher Controls 2000 flow meter. The variation of Reynolds number were from minimum to maximum capacity in the pipeline system. Flow rate varies from 10 L/min to 70 L/min for a 3/2” PVC pipe at line I, 10 L/min to 60 L/min for a 3/4” PVC pipe at line II, and 10 L/min to 50 L/min for a 1/2” acrylic pipe at line III with 2 L/min difference for each variation. System’s performance analysis was also supported by Pipe Flow Expert v5.12.1.1 software.Friction factor (f) versus Reynolds number (Re) for a certain value of relative roughness (e/D) and coefficient of losses (KL) versus Re was obtained from the experiment. The value of e/D for each pipeline is also obtained from experiment and measurement using Swamee – Jain equation. It is acquired that the BEP for each pipeline from measurement compared to software analysis are ηp: 29% to 28,4%; H:17,1 m to 17 m for pipeline I, ηp: 26% to 26,2%; H:18,4 m to 18,34 m for pipeline II, and ηp: 25,3% to 23,8%; H:19 m to 19,2 m for pipeline III. Experiment was done with Reynolds number variation in turbulent flow for a maximum flow rate of 70 L/min
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSM 621.67 Sih a |
| Uncontrolled Keywords: | Head loss, Darcy Weisbach, single stage centrifugal pump, bilangan Reynolds, friction factor, Head loss, Darcy Weisbach, single stage centrifugal pump, Reynolds number, friction factor |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ919 Centrifugal pumps--Design and construction. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 13 Jun 2023 06:29 |
| Last Modified: | 13 Jun 2023 06:29 |
| URI: | http://repository.its.ac.id/id/eprint/98100 |
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