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Kajian Eksperimental Pembakaran Biomassa pada Ruang Bakar Fluidisasi Muhtadin Muhtadin; Ahmad Syuhada; Hamdani Hamdani
Jurnal Teknik Mesin Unsyiah Vol 2, No 1 (2014)
Publisher : Jurnal Teknik Mesin Unsyiah

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Combustion of biomass produces thermal energy that can be utilized of other energy utilities by conversion through fluidized combustion systems. Fluidized reactor with a system (fluidized bed) is an option to the existing conversion thermal energy in biomass. Fuel feed system on combustion chamber (combustor) and fluidized combustion reaction chamber (burner) at fluidization reactor unit integrated with utility boilers producing steam into the reactor performance targets, this is achieved by the provision of fuel to the prescribed amount and timeliness of feeder working system for supplying fuel to the combustion chamber (combustor). Maximum combustion temperature results obtained in between 20 to 30 seconds burning time for 2 (two) kg biomass. Combustion temperature is strongly influenced by the characteristics of biomass. Solid biomass character (wood chips and branches of dry wood planers) has a higher burning temperature of biomass fibers character (areca nut husk). The increase in temperature results for biomass combustion filamentous more quickly reach peak combustion temperature, the comparison is time for biomass burning wood character requires 30 seconds burning time , while for areca nut husk biomass only takes 20 seconds burning time for 2 kg of biomass .

Kajian Eksperimental Pengurangan Gas Emisi Co2 dengan Teknologi Biosphere Dedy Arithama; Khairil Khairil; Iskandar Iskandar
Jurnal Teknik Mesin Unsyiah Vol 4, No 1 (2016)
Publisher : Jurnal Teknik Mesin Unsyiah

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According of air pollution technology can be reduced by two methods: by using the Oceans method or Biosphere method. Oceans method known a way that is burying CO2 in the deep of sea water of oceans. Biosphere method is known as the method of using natural and plant, namely by multiplying the trees in the neighborhood that will create air quality in the surrounding environment is increased. With this method made design research tool that room 1 and room 2 with dimensions of 50 cm x 50 cm x 100 cm with isolated condition. In the first room filled with gas emission vehicle for 60 minutes and then measured by a gas analyzer in order to determine the composition of vehicle exhaust emissions. Gas emissions of vehicles streamed into the room space 1and 2 by using a blower through 3 pieces of flexible hoses. In room 2 vehicle emissions react with activated carbon and tree to absorbs CO2 from vehicle emissions, then for 60 minutes once for 5 hours of data taken and observed. Research results show, with the absorption of CO2 emission and method biosphere technology is very significant influence as evidenced from the graph of CO2 emission and absorption of O2 release to the environment. Variations trees greatly affect the ability of absorption of CO2 gas emissions and O2 release to the environment, also the effect of adding activated carbon additive affects the absorption process of the addition of CO2 emissions and the release of O2 into the environment with a total absorption of 60% CO2 and release O2 at 5.8%. Trees are able to absorb the most CO2 emissions in the period of the most rapid and release O2 is trambesi tree with a total absorption of 80% CO2 and the release of O2 by 7.2% with a time of 300 minutes with the absorption of 3.33 ppm. m2 / min.

Analisis Sistem Pembangkit Listrik Tenaga Angin Kota Meulaboh Maidi Saputra; Ahmad Syuhada; Hamdani Hamdani
Jurnal Teknik Mesin Unsyiah Vol 2, No 2 (2014)
Publisher : Jurnal Teknik Mesin Unsyiah

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Which more lower deficit of fossil energy for generated power plant, in order to need to do wind power generation plant analysis based on renewable energy which is wind turbine horizontal type. This study is analyzing a power system with electric power load Meulaboh town by using a hybrid power generation system which HOMER between wind turbines and diesel generators. Wind resources are used is measured by BMKG Meulaboh Station, which is 6 m/s and the value of the price of diesel fuel used by the generator is equal to 0.5 $/L. The results of the simulation is given by the value of the Net Present Cost (NPC) and the lowest, in the amount of $ 66,535,084 for the value of Renewable Factor (RF) was 58% and for the value of Renewable Factor (RF), the largest at 71%, the value of the Net Present Cost (NPC) amounted to $ 68,091,256.

Perancangan dan Analisa Turbin Darrieus Tipe H untuk Pembangkit Listrik Tenaga Arus Air Ibrahim Ibrahim; Ilham Maulana; Muhajirin Muhajirin; Iskandar Iskandar
Jurnal Teknik Mesin Unsyiah Vol 2, No 1 (2014)
Publisher : Jurnal Teknik Mesin Unsyiah

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This research designed and analyzed the use of current energy by employing the Darrieus turbine type H. This turbine was tested in an irrigation located in Bukit Meusara, Aceh Besar. It has a dimension of 0,3 m x 0,3 m with a blade shaped of NACA 0015 and tested on a variation of water speed flow of 1,43 m/s, 1,91 m/s and 2,16 m/s. An experiment on the influence of angle of attack was also done on -50, 00, 50 and 100. The results showed that the angle maximum turn was 90 rpm with the water speed flow of 2,16 m/s at angle of attack of 50. The maximum power produced by the turbine was as substantial as 26% of efficiency.

Kaji Eksperimental Pengaruh Fase Operasi Unit Tungku Garam Semi Modern Terhadap Prestasinya Mirza Mirza; Khairil Khairil; M. Ilham Maulana
Jurnal Teknik Mesin Unsyiah Vol 4, No 1 (2016)
Publisher : Jurnal Teknik Mesin Unsyiah

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Heating furnace which has been used by farmers to boil salt feed water is a traditional wood-fired furnance that is very simple and very inefficient. Researchers have made several modifications to the furnace unit multi-pot configuration that can utilize waste heat in order to improve the efficiency of the furnace. Potential waste heat of exhaust gas can be used as preheater. The methodology used to asses the performance on the furnace in water boiling test method operating condition of the cold start, hot start, and simmer. The data obtained then analyzed, the result showed that the burning rate and fire power that occurred during the cooking procces of the operation conditions of the cold start, hot start, and simmer increase, but the thermal efficiency decrease. This indicates that increasing of combustion efficiency has not been able to be utilized to the maximum heat. Value of the thermal efficiency of the furnace is affected by the value of useful energy to heat the water in the pot and the amount of energy entry/energy of combustion.

Analisis Kenyamanan Thermal Pada Ruang Pendaftaran Pasien Gedung RSUD Meuraxa Banda Aceh Junaidi Junaidi; Ahmad Syuhada; Zahrul Fuadi
Jurnal Teknik Mesin Unsyiah Vol 3, No 1 (2015)
Publisher : Jurnal Teknik Mesin Unsyiah

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The improvement status of RSUD Meuraxa from non referral to full service and equipped hospital brought several implications to the hospital services particularly in dealing with the increase of patients. The increasing flow of patients in line results in the escalation of the room temperature. The condition was affected by thermal inconveniency caused by direct thermal radiation from the sun, embedded and congenital metabolism of patients (Met), patient clothing insulation (Clo), room equipments and room air circulation. The phenomena affect human performance in their activities. To maintain its status as a general hospital, the impaired condition should be addressed by knowing first the source of the cause. Several measures are normally conducted through direct assessment of the room thermal condition involving the temperature measurement, relative humidity, rate of air flow, and sun ray intensity. Based on the measurement and analysis, it is found that the increase in the room’s occupation has resulted in average increase of room temperature and relative humidity of 30C and 2%, respectively.Themaximum indoor temperature reached 360 while the minimum humidity was 44%. The average indoor air flow rate was less than 1 m/s. It is suggested that one possible solution to improve the thermal inconvenience on the room is by installing the air blower to improve the air circulation of the room.

Desain dan Analisis Rangka Mobil Listrik Malem Diwa X.2 Model Prototype Menggunakan Metode Elemen Hingga Iskandar Hasanuddin; Muhammad Tadjuddin; Hasan Akhyar; Mardhatillah Mardhatillah
Jurnal Teknik Mesin Unsyiah Vol 7, No 1 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Supplies of fossil fuels as an energy source that is depleting became its own challenges in the provision of energy to the continuation of the future. One alternative is to become energy electrical energy. Study conducted in this study is meant to make the eco-friendly vehicles, one example is the electric car. Light vehicle weight and becomes a keyword in doing energy saving in everyday. The research was carried out using the element method to the frame of the car, with condition of load static – general. The software used in this study is ABAQUS. From the results stress result maximum stress of 1.972 x 105 Pa, maximum strain results of 2.592 x 10-6, while the displacement that occurred was of 2.858 x 10-7 m. Research results obtained that the car frame able to withstand loads given of 700 N, so that, it can be concluded that the framework of this car is secure against a given load.

Analisa Potensi Energi Surya untuk Energi Listrik Banda Aceh dan Sekitarnya Ahmad Syuhada; Zahrul Fuadi; Bayu Alif Satari
Jurnal Teknik Mesin Unsyiah Vol 7, No 1 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Electrical energy crisis has become a common problem in Indonesia. Particularly Banda Aceh and surrounding areas, the impact of this phenomenon was a direct impact on the activities of the community. In general, Indonesia has a tropical climate that is potentially going to optimal utilization of solar energy. Particularly Banda Aceh and the surrounding in general have a geographical location in the coastal areas, which have the potential of solar energy potential. This study aims to analyze the potential value and also the effectiveness of solar energy, then analyze the electrical power generated by the solar cell in Banda Aceh and its surroundings. To determine the value of the potential of solar energy begins to measure and collect the value of the intensity of the sun. In case this is done by using the solar cell by measuring the intensity of the sun, current, voltage and temperature. This research was supported by the data collecting solar intensity value for 2 months at three different points, namely in Thermal Engineering Laboratory, BMKG Blang Bintang and SMK PPN Saree. This study degan manifold uses polycrystalline silicon solar cell with an area of 0.715 m2 solar intensity values obtained on October 27, 2016 amounted to 596 Watt / m2, and the output power of electricity by an average of 52.27 Watt. In October 28, 2016 the average light intensity of 475 Watts / m2dan electric power output by an average of 31.37 Watt. In October 31, 2016 the average light intensity of 330 Watts / m2, and the output power of electricity by an average of 30.77 Watt. In 1 November 2016 the average light intensity of 686 Watts / m2, and the output power of electricity by an average of 50.93 Watt. In 2 November 2016 the average light intensity of 675 Watts / m2, and the output power of electricity by an average of 49.84 Watt.

Simulasi Efek Galvanik pada Baja Karbon Sedang Hasil Perlakuan Panas Menggunakan Boundary Element Method (BEM)-3D Illiyinal Muttaqin; Syarizal Fonna; Syifaul Huzni
Jurnal Teknik Mesin Unsyiah Vol 7, No 1 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

This research simulates the galvanic effect on medium carbon steel from the result of heat treatment using the Boundary Element Method (BEM) -3D. BEM was developed with the assumption that the electrolyte surrounding the anode-cathode system no ions in or out, so that it can be modeled as Laplace domain. The potential value and the current density across the surface of the domain can be determined by solving the Laplace equation using the BEM. The Galvanic effects can be analyzed by using the potential data. To simulate the galvanic effect on medium carbon steel the result of heat treatment, two anode-cathode combination was set. The first combination is the annealing steel as the anode and the normalizing steel as the cathode. While the second combination is a hardening steel as the anode and the normalizing steel as the cathode. The conductivity value of the electrolyte for the galvanic effect simulation is 0.0541 Ω / m. The simulation results of the first combination showed the most negative anode potential value is -104.09 mV and the cathode potential value of -85.41 mV. While the simulation results from the second combination provides the most negative anode potential value are -220.27 mV and the cathode potential value are -85.41 mV. From the simulation can be seen that the potential difference between the first anode-cathode combinations are +18.69 mV and the second combination are +134.86. Thus, the simulation results show that the combination of annealing steel and normalizing steel produce galvanic effect is relatively small. While the combination of hardening steel and normalizing steel provide galvanic effect is relatively large.

Peningkatan Kinerja K3 Dan KO Di Perusahaan Pertambangan Melalui Penerapan SMKP Nurul Kamal; Mirna Rahmah Lubis; Muhammad Jehan
Jurnal Teknik Mesin Unsyiah Vol 7, No 1 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

PT Adaro Indonesia is a mining company that operates under the covenant of works concessions of coal mining, on the mining area of PT Adaro Indonesia or ADMO (Adaro Mining Operation) there is a mining services company PT Saptaindra Sejati (PT. SIS), that move in modern mining and contractors provide services for mining and related industries in the ADMO. The research methodology was literature study, field observation, and questioning employees. PT.SIS has been applied Mining Safety Management System application of Mineral and Coal as know as (SMKP Minerba) for all elements, but the level of the achievement on the elements are 88.29% still dropping from the previous year to reach 92.80%. this publication only for element IV, Implementation. The achievement on this element only reached 79% below previous year reach 91%. Provide recommendations as an attempt to improvement efforts to PT. SIS, as well as the company's internal evaluation in order to no longer obtained the findings of major or minor in following (SMKP) audit.

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Dr. Akhyar, ST., MP., M.Eng., IPM

Contact Email
akhyar@unsyiah.ac.id

Phone
+628126988110

Journal Mail Official
jtmu@unsyiah.ac.id

Editorial Address
PROGRAM STUDI TEKNIK MESIN - JURUSAN TEKNIK MESIN DAN INDUSTRI - FAKULTAS TEKNIK - UNIVERSITAS SYIAH KUALA, Jln. Syech Abdul Rauf, No. 7, Darussalam, Banda Aceh 23111, Aceh INDONESIA

Location
Kab. aceh besar,

Aceh

INDONESIA

Abstract

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Dr. Akhyar, ST., MP., M.Eng., IPM

Contact Email akhyar@unsyiah.ac.id

Phone +628126988110

Journal Mail Official jtmu@unsyiah.ac.id

Editorial Address PROGRAM STUDI TEKNIK MESIN - JURUSAN TEKNIK MESIN DAN INDUSTRI - FAKULTAS TEKNIK - UNIVERSITAS SYIAH KUALA, Jln. Syech Abdul Rauf, No. 7, Darussalam, Banda Aceh 23111, Aceh INDONESIA

Location Kab. aceh besar, Aceh INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Dr. Akhyar, ST., MP., M.Eng., IPM

Contact Email
akhyar@unsyiah.ac.id

Phone
+628126988110

Journal Mail Official
jtmu@unsyiah.ac.id

Editorial Address
PROGRAM STUDI TEKNIK MESIN - JURUSAN TEKNIK MESIN DAN INDUSTRI - FAKULTAS TEKNIK - UNIVERSITAS SYIAH KUALA, Jln. Syech Abdul Rauf, No. 7, Darussalam, Banda Aceh 23111, Aceh INDONESIA

Location
Kab. aceh besar,

Aceh

INDONESIA