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All Journal Jurnal Teknik Mesin Journal of Engineering and Technological Sciences Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Vokasi Malikussaleh Journal of Mechanical Science Technology Journal Of Sustainability Perspectives Journal of Sustainability Perspectives Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) JURUTERA (Jurnal Umum Teknik Terapan) Jurnal Polimesin JURNAL REKAYASA KIMIA & LINGKUNGAN
Hamdani Umar
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences

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Kaji Eksperimental Perpindahan Panas Peleburan Parafin Sebagai Material Penyimpan Panas pada Alat Penukar Kalor Bersirip - Zulkifli; Ahmad Syuhada; - Hamdani
Jurnal Teknik Mesin Unsyiah Vol 1, No 4 (2013)
Publisher : Jurnal Teknik Mesin Unsyiah

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Abstract

In this research, experimental study is conducted related to the latent heat transfer and thermal energy storage using finned tubes. An experimental unit consisted of data acquisition, the heat exchanger shell and tube were used to improve heat transfer. The fluid heat pipe was designed in longitudinal fin and radial fin. Paraffin wax was used as a thermal storage medium. The characteristics of heat transfer from fluid to paraffin wax is investigated in different heat flux conditions. The experimental results show that the heat transfer characteristics show similarities to the heat exchanger tubes. In the preheating process, it is dominated by conduction, but at the melting temperature of the heat transfer, it is dominated by convection. The use of longitudinal finned pipe has been able to increase the heat transfer rate.
Evaluasi Pembangkit Listrik Tenaga Angin Kecepatan Rendah Sebagai Penggerak Refrigerator Es 300 Kg/Hari Untuk Nelayan Adi Saputra Ismy; Ahmad Syuhada; - Hamdani
Jurnal Teknik Mesin Unsyiah Vol 1, No 1 (2012)
Publisher : Jurnal Teknik Mesin Unsyiah

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Abstract

Generally, the fishermen in the fishing village of Lancang only 20 trips/month of the year. The average total amount of ice required for the first type of fishing boat is 300 kg ice/day and 150 kg of ice/day for both types of fishing vessels. So, based on the total number of observations of ice demand data is 9000 kg/month (300 kg ice/day). One solution that can be taken is the utilization of wind energy resources owned by the village to generate electrical energy as the driving engine refrigerator. Methods of research conducted in three phases, the first stage is filled with wind potential measurement, processing and analysis of wind speed data. In the second stage of the development of modeling performed to evaluate the performance of Genesis turbines based on the data load and wind potential. The third stage is filled with measurements of 10 KW wind turbine performance and then made ​​comparisons with modeling results. From the analysis of wind speed data obtained from the measurement results obtained by the average wind speed reaches the village of Lancang 3-5 m/s at a height of 15 m above sea level. Based on analytical results obtained using the software Homer wind turbine energy production is 7.474 kWh/year and the results of measurements of overall performance of the turbine can be concluded that wind turbines are the object of study is only able to deliver an average power 3-7 KW.
Pengaruh Sudu Pengarah Aliran pada Turbin Aliran Aksial Head Rendah - Azhari; Ahmad Syuhada; - Hamdani
Jurnal Teknik Mesin Unsyiah Vol 1, No 4 (2013)
Publisher : Jurnal Teknik Mesin Unsyiah

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Abstract

The aim of this thesis is to analysis the effect of using of guide vane in order to increase turbine rotation and power. This thesis is consisting of two stages. First stage is testing the turbine without guide vane and second stage is testing the turbine with guide vane. Testing was did at Gampong Juli Keude Dua, Kecamatan Juli Kabupaten Bireuen.The test did on three kind discharge, 0,14 m3/s, 0,12 m3/s, and 0,10 m3/s by using three kind of guide vanes diameter, 25 cm, 27 cm, and 29 cm. Based on experemental result, the best efficency is 80,9 %, given from the 29 cm guide vane diameter and turbine rotation on 610 rpm with discharge  0,14 m3/s.
Analisis Konservasi Energi Gas Suar Bakar Pada PT. Arun NGL Erwin Ash'ari; Ahmad Syuhada; - Hamdani
Jurnal Teknik Mesin Unsyiah Vol 1, No 3 (2013)
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Abstract

One of the major issues facing the world today is global warming. This problem is caused by the increasing concentration of carbon dioxide and other greenhouse gases in the atmosphere. A suggested method for controlling the level of greenhouse gases in the atmosphere is the prevention of burning flaring gas unit. In this study, two methods are proposed to conserve flaring gas at liquefied natural gas refineries PT. Arun. This method aims to minimize the environmental and economic losses of flaring gas combustion. The proposed method are: 1) utilization of flared gas as fuel for gas turbine power generation and 2) compression and injection of boiled gas into the refinery pipe. Determination of the most suitable methods and tools required for the two methods was done by means of simulation. The simulation was designed to determine the potential power generation and compression power required. The results demonstrate that the use of flared gas as fuel can generate 2130 MW of electricity while requires a compressor with a maximum pressure of 129 bar to inject the flaring gas into the refinery pipe. Study of economic analyzes for both methods was also conducted. From the analysis, it is found that compression of gas into the pipeline requires a lower capital cost than if the gas is utilized as gas turbine fuel. Therefore, the gas injection into the refinery pipe is a suitable alternative to prevent adverse environmental impacts through large amounts of carbon dioxide emissions in the atmosphere due to flaring gas burning.
Uji Pengaruh Sudut Kemiringan Kolektor Terhadap Distribusi Temperatur Iqbal Iqbal; Ahmad Syuhada; Hamdani Hamdani
Jurnal Teknik Mesin Unsyiah Vol 2, No 1 (2014)
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Abstract

Aceh province is geographically located between 20- 60 LU and 950- 980 BT is a tropical region that has a high enough intensity of the sun. Solar energy is a potential energy source, so it needs to consider aspects of the benefits brought about by the sun. This study aims to examine the variation of the solar collector tilt angle to get the collector with optimum results. The material used is wood frame with insulating material zinc in black paint. Temperature measurements carried out in an open space with solar energy as a source of energy for heating. Measurements were taken from 09.00 am - 17.00 pm with measurements every hour. Thermometer was used to measure the temperature, where the measurement is made by 4 (four) points in each space of collector. The results showed that the distribution of the average temperature for the collector tilt angle of 150 C with the air flow rate 0.028 kg/ s is 80 C, the average temperature difference for collector tilt angle of 300 C with the air flow rate 0.0237 kg / s is 170 C, while the average temperature for the collector tilt angle of 450 with the air flow rate 0.0175 kg/ s is 19.50 C.
Kaji Prospek Pemanfaatan Sistem Pembangkit Listrik Hibrida Energi Angin dan Matahari di Desa Langi Kepulauan Simeulue Anan Niazi Usman; Ahmad Syuhada; Hamdani Hamdani
Jurnal Teknik Mesin Unsyiah Vol 3, No 1 (2015)
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Abstract

Langi is a rural area in Simeulue distric having not yet received electricity by national grid. To enhance daily activity of Langi villager in term oflighting and utilities, local diesel generators used as main power. Increasing fuel cost effect to production cost of diesel generator. Since this type of power source is not viable option economically.This study investigates feasibility of hybrid system to provide electricity in Langi. The hybrid system uses combination of diesel generator, solar panels and wind turbines. Meteorology Agency reports wind speedaverage 3-3.67 m/sec at 10 meters above sea level and daily average radiation about 2.5-4.5 kWh/m2/day. Those data used as initial input to simulated power hybrid system using HOMER software. The simulation results show that appropriate combination applied in Langi is a unit of solar panels 55 kW, 10 unit wind turbines with the capacity 30 kW, 2 unit diesel generators with capacity 110 kW and 30 kW, and a 40 kW inverter. Refer to Langi village electricity demand around 220.807 kWh/year, so electricity producing by the hybrid system able to supply around 399 088 kWh/year.
Karakterisasi Material Penyimpan Kalor Laten Menggunakan Metode T-History Ully Muzakir; - Hamdani; Ahmad Syuhada
Jurnal Teknik Mesin Unsyiah Vol 1, No 2 (2012)
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Abstract

The capacity of energy storage and temperature storage has come into consideration in choosing thermal energy storage system. Absorbed or released material either big or small can be determined by finding the value of the specific heat (Cp) and the latent heat fusion (HL). Available method to determine latent heat of fusion (H), specific heat (Cp), temperature melting (Tm) and thermal conductivity (k) are conventional calorimetry method, Differential Thermal Analysis (DTA) and Differential Scanning Calorimetry (DSC). Measurement of physical properties of phase change material using DTA and DSC has disadvantage due to small weight that used for sample (1-10 mg), so that thermophysic of sample usually different when the material is used in large quantities. In this study, T-history method is used to determine thermophysic heat storage material. Examination results show the match value in latent heat (Hm) of paraffin with DSC testing results are 249.42 KJ / kg with 251 KJ / kg. The results of calculations using the T-History for paraffin obtained at temperature Tm 52.72 to 59.9 0C; Cp of 2.54 to 3.57 KJ / Kg.K; Hm at 249.42 KJ / Kg; k of 0, 18 W / mK. For bee-wax Tm obtained at temperatures from 52.4 to 61.79 0C; Cp of 2.65 to 3.45 KJ / Kg.K; Hm of 171 KJ / Kg; k of 0.234 W / mK. For fat cow obtained at temperature Tm 40.82 to 44.10C; Cp of 3.19 to 4.16 KJ / Kg.K; Hm at 60.13 KJ / Kg; k of 0.181 W / mK. It can be concluded after examanination that Paraffin is a good material as a phase change material (PCM) in comparison to bee-wax and beef fat.
Kaji Eksperimental Perpindahan Kalor Pada Sistem Lemari Penyimpan Darah Darmawan Darmawan; Hamdani Hamdani; Ahmad Syuhada
Jurnal Teknik Mesin Unsyiah Vol 2, No 1 (2014)
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Abstract

Blood is the fluid found in all living things serve to transmit substances and oxygen needed by body tissues, carrying chemical products of metabolism, as well as the body's defense against viruses or bacteria. If blood will be donated to another person, the blood will be stored in a blood bag and should be used immediately to the recipient blood. If it is not used directly as they are not needed or should be taken to another place, it must be kept comfortable. Because storage temperature greatly affects the quality of the blood and age of stored blood. Blood storage temperature range from 1 oC to 6 oC,  for this reason, it is necessary that both the thermal insulation material storage chamber walls of blood to maintain the desired temperature. Insulation materials used with the value of thermal conductivity (k) is low styrofoam. The purpose of this study was to obtain a blood storage closet systems portable lightweight and easily moveable..
Analisis Efisiensi Energi pada Sistem Pengolahan Air Limbah PT. Arun LNG Lhokseumawe Erliadi Erliadi; Ahmad Syuhada; Hamdani Hamdani
Jurnal Teknik Mesin Unsyiah Vol 3, No 1 (2015)
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Abstract

Domestic liquid waste from residential areas of PT Arun NGL processed in Waste Water Treatment Plant. So far WWTP # 48 worked pretty well. Problems that occur in the operation of WWTP # 48 is associated with cleaner production principles are: Inefficiency of use of water; The need for clean water for residential and office buildings in the PT Arun NGL is relatively large average 700 L/capita/day, use large quantities of water have an impact on increasing the volume of domestic waste water to be generated and processed at the waste processing unit. On the other hand there has been no attempt to use effluent water WWTP # 48 whose quality is relatively good and relatively large number is 2275 m3/day. This study aimed to analyze the results of energy conservation has been done on the wastewater treatment unit at PT. Arun. To identify inefficient use of water, electricity and chlorine using gap analysis.The data observed in the field compared to the ideal condition that refers to good governance(Good Housekeeping), and then determined how much deviation. The amount of savings opportunities gained from the implementation of cleaner production in the operation of WWTP # 48 is the supply cost savings of 38%.
Analisis Konvervasi Energi Pada Unit Heat Recovery Steam Generator dan Unit Boil-Off Gas Kilang PT. Arun Fadliani Fadliani; Hamdani Hamdani; Ahmad Syuhada
Jurnal Teknik Mesin Unsyiah Vol 2, No 1 (2014)
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Abstract

The result of this analysist of energy conservation activity exposes the performance generated by PT. Arun NGL in the fields of energy conservation and decrease of greenhouse emissions. The implementtion analysist activities assosieted with international initiatives in addressing climate change, and global warming as well as support the implementation of goverment programs of energy conservation programs and the reduction of greenhouse gas emmisions in the industrial sector. All the data presented in this report have been checked carefully, and all sizes are displayed also was referring to an internationally recognized measurement technique in the industry. Thus, the accurancy of the data included in this report both with regards the level of error is small. In addition, all the data loaded can be trusted because it is supported by the documents that existand can be verified by the stakeholders who want to do this. Based on the result of the assessment, energy saving opportunities and reduction of exhaust gas emmisions are available by empowering, improvise and optimize prodution units. Implementation efforts on energy conservation and the utilization of  resources has been implementaed since 1997, which was market by the implementation of the project Marine Boil off Gas (MaBOG) take back the exhaust gas at the time of shipment of LNG (800-1,000 M3 LNG). Marine Boil off Gas has recover 1000 m3 of LNG per shipment in 2003, in installation of heat reovery unit 10 steam  generator, which utilizes the thermal energy of the stack gas turbines to generate steam, and turn off or not utilize all the conventional boilers.
Co-Authors - Alchalil - Azhari - Mursalin - Zulkifli Abdullah, Nasruddin A Abdullah, Nazaruddin Abrar Muslim Abu Bakar Adi Musfadry Adi Saputra Ismy Ahmad Syuhada Ahmad Syuhada Ahmad Syuhada Akram Tamlicha Amalia Harmin Anan Niazi Usman Asri Gani Azwinur Azwinur Darmawan Darmawan Doni Risthiawan Erliadi Erliadi Erwin Ash'ari Fadliani Fadliani Fazri Amir ferri Festika Fitra Ilham Ramafunna Gani, Asri Hani, M. Reza Husni Husin Husni Husin Ikhwan Ikhwan Iqbal Iqbal Iskandar Hasanuddin Jalaluddin Jalaluddin Khairil Khairil Khairil, Khairil Khiaril Khairil Lely Mastura M Iqbal A.P M. Reza Hani Mahidin Mahidin Mahidin Mahidin Mahidin, Mahidin Mahyuddin Maidi Saputra Maimun Syukri Meri Andriani Meri Andriani Muhammad Amin Muhammad Amin Muhammad Faisal Muhammad Syukur Muhammad Thaib Hasan Muhammad Zulfri Muhtadin Munira Amudy Muslim, Abrar Nanda Saleysia Aziza Nasruddin Abdullah Nazaruddin Abdul Rachman Puput Heri Syahputra Putra, Rachmad Almi Razali Thaib Razali Thaib Razali Thaib Razali Thaib Rizal, Samsul Rizal, Teuku Azuar Safrizal Rahman Salamul Fajar Samsul Rizal Samsul Rizal Sarwo Edhy Sofyan Sukuria Mungkur, Rahmat Syahri, Alfi Syukur, Muhammad Taufiq Taufiq Teuku Azuar Rizal Teuku Juliadi Teuku Zubir Ully Muzakir Widodo, Syamsul Bahri Yossi Oktarini