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MODIFIKASI UNIT PEMOTONMESIN PENCACAH SERAT TKKS MENGGUNAKAN SILINDER PEMOTONG TIPE REEL Junaidi, Junaidi; Adriansyah, Adriansyah; Adril, Elvis
Jurnal Ilmiah Poli Rekayasa Vol 15, No 1 (2019): -
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.15.1.145

Abstract

Oil palm empty fruit bunches (OPEFB) are solid waste from the oil palm plantation industry with a fiber content of ± 70%, and can be used as a composite board reinforcement. From the results of previous studies found that the mechanical properties of composite boards of OPEFB fibers between the left, middle and right parts occur very large differences, this situation occurs because the length of the fiber used is not the same between 3-10 cm. The long fibers in addition to the adhesive mixing process are very difficult and long, also resulting in uneven strength of the boards on each side. The purpose of this study is to modify the design of the TKKS fiber chopping machine cutting unit using a reel type cutting cylinder, making the machine cutting unit, and testing the engine performance. From the results of engine design, the engine capacity is ± 85 kg / hour, the engine size is 110 cm x 36.5 cm x 49 cm, the motor power is 2.5 HP with a rotation of 1450 Rpm. The components of the chopper unit consist of the chopper holder measuring 8 cm x l5 cm x 13 cm, placed 3 pieces of planers which are 8 cm x 5 cm x 0.4 cm, the chopper shaft measuring 40 cm long and Ø 3 cm, the holder of the pin measuring Ø 16 cm with a thickness of 0.6 cm. From the results of engine performance testing, it is found that the capacity of the machine with 5 mm filter diameter is 35 kg / hour, diameter of 10 mm 48 kg / hour, diameter 15 mm 55 kg / hour and diameter of 20 mm is 65 kg / hour. The uniformity of the results in the filter hole 5 mm the average fiber length of 15-25 is 80%, the filter hole 10 mm fiber length an average of 30-40 mm by 82%, the filter hole 15 mm fiber length an average of 40-50 mm by 85%, and the filter hole 20 mm in fiber length an average of 50-60 mm by 80%.
PEMBANGKIT LISTRIK TENAGA GELOMBANG LAUT SISTIM EMPAT BANDUL Zamri, Aidil; Mura, Yusri; Asmed, Asmed; Adril, Elvis
Prosiding Semnastek PROSIDING SEMNASTEK 2015
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Pembangkit Listrik Tenaga Gelombang Laut -Sistem Bandulan (PLTGL-SB) yang rancang-bangunnya berbentuk ponton di tempatkan mengapung di atas permukaan air laut, dan PLTGL-SB tersebut akan mengikuti gerak/arus gelombang sesuai dengan frekwensi gelombang laut, sehingga menyebabkan posisi PLTGL-SB selalu bergerak terombang ambing sesuai dengan alur gelombang. Karena gerakan terombang ambing ponton yang terus-menerus tersebut menyebabkan ayunan bandul yang akan dirubah jadi putaran generator dalam hal ini ada empat bandul, sehingga PLTGL-SB mengeluarkan Energi/Daya Listrik. Gerakan bandul yang bergoyang dirobah dengan menggunakan sistem trasmisi menjadi putaran yang dapat memutar dinamo/generator, dan generator yang digunakan adalah jenis putaran rendah 3 Phase AC dengan daya 500 Watt pada putaran 1400 rpm.
PEMBANGKIT LISTRIK TENAGA GELOMBANG LAUT SISTIM EMPAT BANDUL Zamri, Aidil; Yusri, Yusri; Asmed, Asmed; Adril, Elvis
Prosiding Semnastek PROSIDING SEMNASTEK 2014
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Pembangkit  Listrik  Tenaga  Gelombang  Laut -Sistem  Bandulan  (PLTGL-SB)  yang  rancangbangunnya berbentuk ponton di tempatkan mengapung di atas permukaan air laut, dan PLTGL-SBtersebut akan mengikuti gerak/arus gelombang sesuai dengan frekwensi gelombang laut, sehinggamenyebabkan posisi PLTGL-SB selalu bergerak terombang ambing sesuai dengan alur gelombang.Karena  gerakan  terombang  ambing ponton yang  terus-menerus  tersebut menyebabkan  ayunanbandul yang akan dirubah jadi putaran generator dalam hal ini ada empat bandul, sehingga PLTGLSB  mengeluarkan  Energi/Daya  Listrik.Dan  menurut perhitungan,  untuk  panjang  pantai + 1km,terdapat  Energi  Potensial  Gelombang  Laut +10MW,  dengan  biaya  investasinya+ Rp35.000.000/kW, dan dapat menerangi + 40.000 rumah-tangga sederhana.
PENGARUH RETROFIT REFRIGERAN CFC-12 DENGAN HCR-12 TERHADAP KINERJA REFRIGERATOR DOMESTIK DAN PERAWATANNYA Isnanda, Isnanda; Rosa, Yazmendra; Adril, Elvis; Feidihal, Feidihal
Jurnal Teknik Mesin Vol 12 No 2 (2019): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.12.1.232

Abstract

In the recent years,almost every house, has domestic refrigerator wich still use CFC-12 refrigerant as the fluid.When the leakage happen, the  refrigerant causes the demage of ozon such as forming the ozon side then radiation of ultra violet from the sun ray in high intensity reach the surface on each directly and it is dangerous for the human life. The Hidrocarbon refrigerant (HCR-12) is considered as one of alternative, wich is environmentally friendly,more energy to save and without modification, to replace the CFC-12.This research compare the performance of household refrigerator using the CFC-12 refrigerant and HCR-12 without the modification  of refrigerator.The result shown from the COP, that the refrigerators work for both of  refrigerant is relatively the same and the quality of the ice product from HCR-12 is better than CFC-12, because the amount of the energy wich is absorbed by HCR-12 during  the evapouration process is bigger than CFC-12. Analyzing the amount of refrigerant weight fullfilled to refrigerator, HCR-12  only  uses  40 %  from CFC-12,If the price of both refrigerant is the same,the use of HCR-12 is profitible than the use of CFC-12