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Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin
Published by Universitas Halu Oleo
ISSN : -     EISSN : 25028944     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Jurnal ENTHALPY memuat artikel hasil penelitian tugas akhir mahasiswa di lingkup Jurusan Teknik Mesin, Fakultas Teknik Universitas Halu Oleo Entalpy Jurnal Ilmiah Mahasiswa Teknik Mesin diterbitkan 4 (empat) kali setahun pada bulan Februari, Mei, Agustus dan November.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 5 Documents
 1 
Search results for , issue "Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin" : 5 Documents clear
Analisa Produksi Bio-Etanol Dari Kulit Singkong Dengan Proses Thermal Laode Muhamad Zakirus Sabilah; Lukas Kano Mangalla; Al Ichlas Imran
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.94 KB) | DOI: 10.55679/enthalpy.v5i3.15768

Abstract

Cassava skin is a waste of high-carbohydrate cassava that can be treated asa an alternative fuel source. As for the purpose of this study, it is to know how to produce bioethanol  from  cassava  skin  and  how  much  ethanol  is  produced  in  the fermentation  destilation  procwss.  Bioethanol  research  from  the  cassava  skin  is made by means of a fermentation process using a 9 and 12 day fariation with a 20,4 and 60 gram supplement of a mixture (leaven/yeast) of a 20,4 and 60 gram that is cut  off  by  sample  destilting  devices.  Research  shows  that  the  longer  the fermentation from a mixture of refined caskbark and yeasts does not significantly affect the ethanol produced, since ethanol results from each fariation is 10%. Key words: Cassava suede, fermentation, bioethanol, renewable energy 
Analisa Perbandingan BBM (Bahan Bakar Minyak) Dari Limbah Plastik Menggunakan Alat Pirolisis Pemanas LPG (Liquified Petroleum Gas) dan Listrik Miftachur Rozikin; Ridway Balaka; Muhammad Hasbi
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (643.322 KB) | DOI: 10.55679/enthalpy.v5i3.15770

Abstract

The  purpose  of  this  research  is  to  know  the  comparison  of  fuel  (oil  fuel) pyrolysis results using LPG heaters (Liquid Petroleum Gas) and electricity. In this study using two pyrolysis tools, namely pyrolysis tools using gas and electrical heaters.  Materials used are plastic garbage types of HDPE, LDPE and PP as much as 500 grams. The results of this study showed the value of the  density  of  pyrolysis  tools  using  gas  heaters  of  790.6  Kg/m³  for  HDPE plastic, 722.0 Kg/m³ for LDPE Plastics and 738.7 Kg/m³ for PP Plastics. As for the viscosity value of 0.7853 m²/s for HDPE plastic, 0.6771 m²/s for LDPE Plastics and 0.6159 m²/s for PP Plastics. For the value of density by using the electrical pyrolysis tools are 771.4 Kg/m³ for HDPE plastic, 743.1 Kg/m³ for LDPE Plastics and 768.3 Kg/m³ for PP Plastics. While the viscosity value is  obtained  at  0.7198  m²/s  for  HDPE  plastic,  0.7613  m²/s  for  LDPE  and 0.7054 m²/s for PP plastic. Keywords: Pyrolysis, comparison of pyrolysis tools, plastics 
Studi Penurunan Tekanan Akibat Aliran Melalui Katup Arfan Arfan; Salimin Salimin; Al Ichlas Imran
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (713.364 KB) | DOI: 10.55679/enthalpy.v5i3.15771

Abstract

The purpose of this study was to determine the effect of flow rate (Q) on pressure drop (ΔP) and to find out how much pressure drop value (ΔP) and loss coefficient (k) occurred in valves. The method used is an experimental study, using a series of test  installations.  In  this  study  the  free  variables  used  were  the  flow  rate  that passes through the valve pipe, for bound variables are reynolds number (Re), loss coefficient (K) and pressure decrease (ΔP). Based on the results of the study, it can be concluded that the greater the discharge of outflow (Q) the smaller the value of pressure reduction (ΔP) that occurs, and vice versa. The pressure drop value (ΔP) obtained at the valve opening was 16.6% for each point of ΔP1-2, ΔP1-3, ΔP1-4, ΔP1-5 of 18846.1 Pa; 19129.2 Pa; 20506.1 Pa; 20897.0 Pa. While the amount of friction coefficient value (hf) obtained at the valve opening is 99.6% for each point hf2, hf3, hf4, hf5 which is 0.188 mH2O; 0.263 mH2O; 0.338 mH2O; 0.414 mH2O. Keywords: Valve, Discharge, Head Loss, Pressure Drop 
Perbandingan Kuat Tekan Paving Blok Berbahan Slag Nikel dengan Penambahan Berbagai Jenis Limbah Plastik Laode Muhamad Syawal Husein; Yuspian Gunawan; Abd Kadir
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1090.177 KB) | DOI: 10.55679/enthalpy.v5i3.15772

Abstract

Indonesia's economic development is currently heavily dependent on the industrial sector  which  continues  to  experience  rapid  development.  One  of  the  growing industrial areas is the construction industry, especially infrastructure and property development  that  requires  materials  such  as  block  paving.  The  purpose  of  this research  is  to  find  out  the  comparison  of  strong  press  paving  blocks  with  the addition of nickel slag and plastic cacahan (PET, HDPE, LDPE and PP). This research uses conventional (manual) randomized methods. The results of this study showed that  the  influence  of  the  addition  of  nickel  slag  and  plastic  cacahan  in  the manufacture  of  paving  blocks  against  strong  press  can  be  concluded  that  the addition  of  nickel  and  plastic  slag  with  strong  characteristics  can  increase  the strength of paving block press. The highest average press strength values were in Sample C samples, with mixed variations (cement 25%, coarse aggregate 5%, slag 25%, fine aggregate 5% and HDPE plastic cacahan 40%). has a press force of 155 kg/cm2 with a quality of C based on SNI 03-0691-1996. The lowest press test results were  found  in  sample  E  (cement  25%,  coarse  aggregate  5%,  slag  25%,  fine aggregate 5% and plastic cacahan PP 40%) with a press test value of 87.5 kg/cm2 with a quality of D based on SNI 03-0691-1996. Keywords: Paving block, Plastic Type, Strong Press 
Perancangan Alat Press Ubi Parut Tipe Tabung Dengan Sistem Hidrolik Zemi Jaka Saputra; Ridway Balaka; Raden Rinova
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (488.493 KB) | DOI: 10.55679/enthalpy.v5i3.24378

Abstract

Cassava as a food ingredient has various processing methods, one of which is grated and then squeezed. In the process of squeezing grated potatoes, it is still mostly done manually. This method, besides being cost-effective, does not require certain skills, but it takes quite a long time to get the desired results. So, there is a need for innovation to facilitate the process of squeezing grated potatoes. Therefore, a research was conducted on the design of a tube type grated sweet potato press with a hydraulic system. The purpose of this study was to simplify and speed up the process of squeezing grated potatoes. This research was conducted by designing using an inventor application by considering the use of materials as a press machine construction. The area of the tool frame steel profile is 30 mm x 30 mm x 4 mm, A = 2.27 cm2. The force acting on the tube when pressing the sweet potato F = 1,236,3 kgf. Tensile force on steel support Fp = 309.075 kgf. Tensile stress that occurs t = 1361.56 N/cm2. Weld area A = 180 mm2. Welded joints in the tool receive a load of P = 3090.7 N (309.07 kg.f) and the welded joint receives a shear load of = 8585 N/mm2 (or 858.5 N/cm2).Keywords: Design, press tools, hydraulics

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