ANALISA HEADLOSS PADA DISTRIBUSI MAKE-UP WATER DENGAN MENGGUNAKAN METODE PRESSURE DROP DARCY-WEISBACH DAN HAZEN WILLIAMS DI PT. PULP & PAPER

SAPUTRA, JOKO (2023) ANALISA HEADLOSS PADA DISTRIBUSI MAKE-UP WATER DENGAN MENGGUNAKAN METODE PRESSURE DROP DARCY-WEISBACH DAN HAZEN WILLIAMS DI PT. PULP & PAPER. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

The distribution of make-up water in a power plant is a challenge in itself if the water source is very far away and with various elevations of the contours of the land. In addition to geological factors, of course, an impact on the budget and technical. From the case above, there are several important things that must be analyzed, including the head loss that occurs in pipes and fittings, the actual total head loss, the characteristics of the fluid flow that occurs in the pipe while the fluid supply takes place whether it is laminar, transitional, turbulent and a comparison of the pump head requirements with actual heads. The important role of engineering in piping design is of course a priority and this is outlined in the form of isometric drawing process and instrumentation diagrams (PNID) to facilitate the installation process. Headloss analysis was carried out on make-up pipes, demin plants and cooling towers. In demin plant make-up water pipeline: Dynamic headloss (major headloss) obtained from the Hazzen-Williams equation is 7.0 meters. Static headloss (minor headloss): The difference in elevation is 7,442-meters, Minor headloss obtained from the Darcy-Weisbach equation to the fitting is 4.3 meters. Hydrostatic pressure: The head loss from the Hazzen-Williams equation is 72.55 bar. In the make-up water pipeline cooling tower: Dynamic headloss (major headloss) from the Hazzen-William’s equation is 7.1 meters. Static headloss (minor headloss): The difference in elevation is 1,942-meters, Minor headloss obtained from the Darcy-Weisbach equation to the fitting is 4.4 meters. Hydrostatic pressure: The head loss from the Hazzen-William’s equation is 18.93 bar. The type of fluid flow in the make-up water distribution pipe is turbulent, the resulting Reynolds Number is 78026. Keywords: Piping, pipe, headloss, pump, pressure Penyaluran air make-up pada pembangkit listrik menjadi tantangan tersendiri jika sumber air memiliki jarak yang sangat jauh dan dengan kondisi kontur tanah beragam elevasi. Selain faktor geologi, tentunya berimbas kepada anggaran dan teknis. Dari kasus diatas maka ada beberapa hal penting yang harus di analisa, diantaranya adalah headloss yang terjadi pada pipa dan fitting, total headloss actual, karakteristik aliran fluida yang terjadi didalam pipa selama suplai fluida berlangsung apakah laminar, transitional, turbulent dan komparasi kebutuhan head pompa dengan actual head. Peran penting engineering dalam perancangan pemipaan tentunya menjadi prioritas dan ini dituangkan dalam bentuk isometric drawing process and instrumentation diagram (PNID) agar memudahkan dalam prosess instalasi. Analisa headloss dilakukan pada pipa make-up, demin plant dan cooling tower. Pada demin plant makeup water pipeline: Dynamic headloss (major headloss) yang di dapat dari persamaan Hazzen-Williams adalah 7.0 meter. Static headloss (minor headloss): Perbedaan elevasi adalah 7.442-meter, Minor headloss yang didapat dari persamaan DarcyWeisbach terhadap fitting adalah 4.3 meter. Tekanan hydrostatis: Headloss dari persamaan Hazzen-Williams adalah 72.55 bar. Pada cooling tower make-up water pipeline: Dynamic headloss (major headloss) dari persamaan Hazzen-Williams adalah 7.1 meter. Static headloss (minor headloss): Perbedaan elevasi adalah 1.942-meter, Minor headloss yang didapat dari persamaan Darcy-Weisbach terhadap fitting adalah 4.4 meter. Tekanan hydrostatis: Headloss dari persamaan Hazzen-Williams adalah 18.93 bar. Jenis aliran fluida didalam pipa distribusi make-up water adalah turbulent, Reynold Number yang dihasilkan adalah 78026. Kata kunci: Pemipaan, pipa, penurunan tekanan, pompa, tekanan

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