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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin LONTAR Jurnal Teknik Mesin Undana (LJTMU )
Rosid Rosid
Teknik Mesin, Fakultas Teknik, Universitas Singaperbangsa Karawang
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Kebocoran Belokan Pipa Evaporator Pada Sebuah Heat Recovary Steam Generator Akibat Fleksibilitas Termal Rosid Rosid; Aa Santosa; Elfan Tirta
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 4 No 1 (2017): April 2017
Publisher : Jurusan Teknik Mesin, Fakultas Sains dan Teknik, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (580.735 KB) | DOI: 10.1234/ljtmu.v4i1.899

Abstract

Abstrak Kerusakan yang sering terjadi berupa kebocoran pada pipa Heat Recovary Steam Generator (HRSG) di daerah Low Pressure Evaporator. Kerusakan diawali dengan terlihatnya kotoran berupa deposit (Scale) yang menempel pada pipa Heat Recovary Steam Generator (HRSG) di daerah Low Pressure Evaporator, selain kotoran terlihat pada bagian pipa tersebut adanya korosi yang bisa mengakibatkan terhambatnya laju perpindahan panas dari gas buang ke pipa Low Pressure Evaporator sehingga mengakibatkan fleksibelitas termal pada pipa tersebut. Dalam Analisa ini penelitian difokuskan pada daerah Heat Recovary Steam Generator (HRSG) yang mengalami kerusakan yang paling sering terjadi. Berdasarkan informasi yang berhasil dikumpulkam dari Pembangkit Listrik Tenaga Uap (PLTGU) yang diamati, kerusakan yang paling sering terjadi adalah kebocoran pada Belokan pipa-pipa Low Pressure Evaporator. Fleksibilitas pipa pada bagian sebelah timur dan barat berbeda. Nilai fleksibilitas pipa sebelah timur lebih besar dari 0,03 yaitu 0,04. Sedangkan pipa sebelah barat nilai fleksibilitasnya mencapai 0,009. Akibat nilai fleksibelitas yang berbeda menyebabkan pipa sering terjadi kebocoran karena nilai fleksibilitasnya lebih besar dari yang ditentukan.
ANALISA SIMULASI KERUSAKAN IMPELLER PADA POMPA SENTRIFUGAL AKIBAT KAVITASI Rosid Rosid; Jojo Sumarjo
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 11, No 2 (2017): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

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Abstract

Centrifugal pumps are widely used equipment in a variety of industrial applications and some other sectors. The pump works by converting mechanical energy into kinetic energy or press. Pressure at the pump increases at low pressure (lower than atmospheric pressure). This research is to know the analysis of cavitation on water purification process at Unit Water Treatment At PT. XXX in Karawang. The analysis was performed on the centrifugal pump to calculate the speed of the suction pipe, the speed of the compressive pipe and calculate the Net Positive Suction Head (NPSH) to determine whether the pump worked by cavitation and analyze the speed with the Solidworks sofwar simulation. Creating computer modeling and simulation of suction pipe speed mechanism and speed of pipe press with Sofwar Solidworks. Counting head losses on suction pipe and head losses on press pipes. Calculate the Net Positive Suction Head (NPSH) to determine whether the pump that works is affected by Cavitation. This study is expected to provide information and reviews for industries using centrifugal pumps for the design of suction pipes and press pipes to reduce damage to impeller due to cavitation. As reference material for the user of centrifugal pump for redesign of impeller. Available NPSH is 2.13 and NPSH is required 0.5 to avoid cavitation due to the available NPSH value greater than required NPSH value.
Co-Authors Aa Santosa Elfan Tirta Jojo Sumarjo