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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 178 Documents
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STUDI EKSPERIMEN PENGGUNAAN AIR GARAM SEBAGAI SUMBER ENERGI ALTERNATIF Muh Ali Usman; Muhammad Hasbi; Budiman Sudia
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 2, No 3 (2017): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (117.999 KB) | DOI: 10.55679/enthalpy.v2i3.2741

Abstract

The aim of this study was to determine the effect of cross-sectional area of copper and zinc to the brinegenerated power as an alternative energy source.Equipment and materials was used in this studywere theAVO meter, pliers, meter, measuring cups, wells water, salt, copper plate, zinc plate, cables and glass. Theprocedures of this study were to prepare tools and materials, then making an electrochemical cell as much as10 cell container of water and salt using glass, making the series circuit plate of copper and zinc, making asolution of water and salt, then test the salt water as an alternative energy source using AVO meter, Theparameters measured in this study were a big potential and strong electric currents are able to produce brinewith a variety of cross-sectional area of copper and zinc 7 cm2;7 cm2, 7 cm2; 14 cm2, 7 cm2; 21 cm2 and 14cm2; 7 cm2, 14 cm2; 14 cm2, 14 cm2; 21 cm2 and 21 cm2; 7 cm2, 21 cm2; 14 cm2, 21 cm2; 21 cm2. In brinetesting, into energi source, a large power was found on 21 cm2 of 0,899 W elektrode while to increase thepotential value of electric can be done by increasing the number of cells.Keywords: Water, salt, electrochemical cells, alternative energy .
UNJUK KERJA MESIN PENCACAH SAMPAH Juardin Juardin; Budiman Sudia; Al Ichlas Imran
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 2, No 4 (2017): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (126.82 KB) | DOI: 10.55679/enthalpy.v2i4.2928

Abstract

The aim of this research is to know the difference of time and of the result of plastic waste enumeration on blade before and after modification to material weight of 250gr, 500gr, and 750gr. This study compared the length of time and of the enumeration results on the blades before they were modified and after modified. Variations in waste weight were 250gr, 500gr, and 750gr. The results showed that the percentage comparison of the length of the process of enumerating plastic waste before modification with the weight of 250gr resulted in enumeration time for 35 seconds, so that the effective capacity of the tool was 25.71 kg / hour. For weight of garbage equal to 500gr produce enumeration time for 126 second, with tool capacity 14,28 kg/hour. While the weight of garbage 750gr produce enumeration time for 192 seconds, with the effective capacity of the tool of 14.06 kg/hour. For the conditions after modification of the blades, the weight of the waste of 250gr resulted in an enumeration time of 80 seconds, in which the effective capacity of the apparatus was 11.25 kg/hr. For the weight of garbage of 500gr was resulted enumeration time for 255 seconds, where the effective capacity of the tool obtained was 7.05 kg/hour. While the weight of 750gr garbage generates the enumeration time for 401 seconds, where the effective capacity of the tool obtained of 6.73 kg/hour. The quality of enumeration of plastic waste on the blades before the modification was still not chopped properly, while the results of plastic waste debris on the blades after modified has been chopped well but the results were not irregular. Keywords: Plastic waste, chopping machine, enumeration time, size of enumeration result.
PENGARUH PEMAMFAATAN FABA (FLY ASH AND BOTTOM ASH) TERHADAP LAJU PERPINDAHAN PANAS PADA TUNGKU ARANG Afandi Afandi; Salimin Salimin; Jenny Delly
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.759 KB) | DOI: 10.55679/enthalpy.v3i1.3624

Abstract

As a manifestation of the application of materials engineering science in the field of furnace experimentalresearch makes a study to solve the problem what happens to the existing stove by utilizing the material thatis cheap and easy to get and applied in this case the materials used are faba (flyash and bottom ash) as amedia insulator that can increase the head resistance of the clay furnace, as previous research has shown flyash can be used as an.This experimental study was conducted on five different model variations ofcomposition . the materials used are clay cement, sand and fly ash. The data obtained is measured by the toolthermo coople. The results of this study indicate that the material on the composition 40:60% lowestconductivity value is obtained0.018 W/m.oC with the head provided ±500 oC.the lower the conductivity valuethe better the quality of the material as the insulator.Keyword: Composite, conductivity, faba, fly ash and bottom ash.
PEMBUATAN KOMPOSIT SERAT SERABUT KELAPA DAN RESIN POLYESTER SEBAGAI MATERIAL PEREDAM AKUSTIK Suriadi Suriadi; Ridway Balaka; La Hasanuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.651 KB) | DOI: 10.55679/enthalpy.v3i1.3632

Abstract

Noise pollution from noise is a classic promblem in Indonesia. This noise can be reduced by using anacoustic damper. Composite material made from coconut fiber fiber matrix is an alternative material forenvironmentally friendly acoustic damper because it utilizes agricultural waste material. This research hasmade composite based on coconut fiber fiber matrix with polyester resin. To increase the strength of coconutfiber fibers was first muffled in 2% NaOH solution for 3 hours. The composite made then tested the value ofsound absorption coefficient (????), composite damping test is done on kundst tube impedance tool equippedwith spekerr device,amplifer,power supllay,lettop,smartphone,oscilloscope,sound lever meter with inputfrequency 200,400,600 Hz. The result of Noise Absorption Coefficient (NAC) test of all polyester resincomposite test specimens in coconut fiber reinfercement have the highest absorption coefficient 0,50568 (????)at fractoin of 70:30% fiber volume with frequency of 600 Hz. While for the lowest sound absorption result0,503558 (????) with volume fraction of 70:30% fiber with frequency 200 Hz. The overall specimen can be madeas a damper because it has a sound absorption coefficient value >0.5Key word: Composite, acoustic damping, coconut fiber fibers and NAC.
PERANCANGAN DAN SIMULASI FRAME MOBIL GOKART Muhammad Syahrul Ramadhan; Lukas Kano Mangalla; Samhuddin Samhuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 2 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (298.752 KB) | DOI: 10.55679/enthalpy.v3i2.4215

Abstract

This research isaimingto know the distribution of stress, strain, displacementas well as safety factor on gmokart frame. The frame was designed in Autodesk inventor software and simulated using AnsysFluent. Carbon steel with maximum loadof 95 Kg was used as material for the frame. The results of this research indicate that maximum stress at the main frame can reach around 34,731 N/m2 in simulation and 34,772 N/m2 by manual calculation. On the other hand, the maximum stresscan reach 1,95 ×  cm in  simulation and 1,73×  from manual calculation. The maximum displacementhappened on the frame is around 0,175 cm in simulation while in calculation it can reach around 0,278 cm. Material used for the frame has the safety factor of 10,045.Keyword: Design, simulation, frame, gokart, and savety factor.
Studi Potensi Radiasi Matahari Untuk Pemanfaatan Energi Surya Di Kota Kendari Andi Wiwin; Abd Kadir; La Hasanudin; Indrayati Galugu
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 3 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.618 KB) | DOI: 10.55679/enthalpy.v3i3.4532

Abstract

The purpose of this research is to know the data of solar radiation intensity that will be used in the utilization of solar energy. The tools and materials used in this research are Solar Power Meter, HP android, laptop, and thermometer. From the results of research can be concluded some things that data about the intensity of solar radiation can be obtained by using two methods of direct measurement and theoretical calculation. Solar intensity data obtained in this study by taking the average value of data research for a month exactly month march 2018, then obtained value for the measurement directly with the highest value of solar radiation intensity data is at 11:30 with the sun radiation intensity value of 666 W/m2 and the lowest value of solar radiation intensity data is at 17:00 with the sun radiation intensity value 167 W/m2, while for theoretical calculation then obtained with the highest value of solar radiation intensity data is at 12:00 with the intensity of solar radiation 974 W/m2 and the lowest value of solar radiation intensity data is at 17:00 with radiation intensity value sun 170 W/m2.Keywords: Data of solar radiation intensity, direct measurement and theoretical calculation, result of measurement and calculation.
Perancangan dan Analisa Simulasi Pembebanan Chassis Sepeda Wisata Untuk Dua Penumpang Menggunakan Software Autodesk Inventor 2017 Salimin, Salimin; Samhuddin, Samhuddin; Adha, Ismail
ENTHALPY Vol 3, No 3 (2018): ENTHALPY-Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : ENTHALPY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (20.109 KB)

Abstract

This research is aiming to know the distribution of stress, strain, displacement as well as safety factor on bike tour chassis. The chassis was designed in Autodesk Inventor software and simulated using Autodesk Inventor software. Carbon steel and load of 120 kg, 150 kg and 180 kg was used as material for the chassis. The results of this research indicate that maximum stress at the main frame can reach around 47,86 N/m2 in simulation and 45,83 N/m2 by manual calculation. On the other hand, the maximum stress can reach 2079×10􀬿􀬸 mm/mmin simulation and 2,29×10􀬿􀬸 􀝉􀝉/􀝉􀝉 from manual calculation. The maximum displacement happened on the frame is around 0,4684 mm in simulation while in calculation it can reach around 0,528 . The maximum safety factor happened on the chasis is around 7,31 in simulation while in calculation it can reach around 7,63. Keyword: Bike tour chassis, simulation, autodesk inventor, distribution stress, strain,displacement, safety factor
Perancangan dan Analisa Simulasi Pembebanan Chassis Sepeda Wisata Untuk Dua Penumpang Menggunakan Software Autodesk Inventor 2017 Salimin Salimin; Samhuddin Samhuddin; Ismail Adha
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 3 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.609 KB) | DOI: 10.55679/enthalpy.v3i3.4872

Abstract

This research is aiming to know the distribution of stress, strain, displacement as well as safety factor on bike tour chassis. The chassis was designed in Autodesk Inventor software and simulated using Autodesk Inventor software. Carbon steel and load of 120 kg, 150 kg, and 180 kg was used as material for the chassis. The results of this research indicate that maximum stress at the main frame can reach around 47,86 N/m2 in simulation and 45,83 N/m2 by manual calculation. On the other hand, the maximum stress can reach 2079×10 mm/mm in simulation and 2,29×10 N/m2 in from manual calculation. The maximum displacement happened on the frame is around 0,4684 mm in simulation while in calculation it can reach around 0,528. The maximum safety factor happened on the chasis is around 7,31 in simulation while in calculation it can reach around 7,63.
Analisa Mampu Redam Suara Komposit Polyester Berpenguat Serbuk Gergaji dan Fly Ash Haris, Muh. Jufri; Salimin, Salimin; Imran, Al Ichlas
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 4 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.399 KB) | DOI: 10.55679/enthalpy.v3i4.5318

Abstract

This damper material will raise awareness of the importance of reducing noise and the importance of utulizing waste products as a material that can be economically. This study aims to determine and amalyze the ability to dampen the sound of polyester composit with sawdust and fly ash mixture to the frequency of 1200 Hz, 1400 Hz and 1600 Hz. This eksperimental study was conducted with three different compositionvariations. The materials used are polyester resin, sawdust and fly ash. The data obtained is measured using a sound level meter. The result of this study showed that the material at a 70:20:10% volume fractionobtained the highest sound absorption coefficient value of 0,38248 dB with a frequency of 1600 Hz and for the lowest absorption coefficient value 0,11687 DB at volume fraction 60:30:10% with frequency 1200 Hz. The higher the value of sound absorption coefficient, the better the quality of the soundproofing material.Key word: Composite, resin polyester, sawdust, fly ash and NAC.
Analisa Perpindahan Panas Pada Alat Pengering Pisang Tipe Rak Kombinasi Tenaga Surya dan Biomassa Ambo Sakka; Lukas Kano Mangalla; Budiman Sudia
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 4 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.84 KB) | DOI: 10.55679/enthalpy.v3i4.5282

Abstract

So far, most farmers have drained agricultural products by drying directly under the hot sun. The drying process by drying directly requires intensive labor, longer time and requires a large amount of land. The purpose of this study is to find out the heat transfer analysis that occurs in rack type dryers that utilize moving air flow into the device naturally and then the air is heated by utilizing the heat of solar radiation collected at solar collectors and also utilizing biomass energy used to accelerate drying process of the product in the drying chamber. The data obtained were taken by using Thermocouple CC type (Cooper Constanta), Solar Powermeter, Anemometer, Thermo-Hygrometer and Scales. The results of the study that the heat transfer analysis on the rack type dryer with the drying process using solar collectors as heat absorbers and biomass energy then combined. The results obtained for solar power efficiency is 55.852%, biomass energy efficiency of 58.127%, and combination efficiency of 69.935 %.Keywords: Dryer type rack, solar collector, biomass, drying variation, temperature, efficiency.

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