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All Journal Jurnal Teknik Mesin Rekayasa Mesin Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Inotera Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Cahaya Mandalika Malikussaleh Journal of Mechanical Science Technology kawanad jes Jurnal Polimesin
Ahmad Syuhada
Dosen Teknik Mesin - Universitas Syiah Kuala
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering

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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)
Publisher : Jurnal Teknik Mesin Unsyiah

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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.
Analisa Pengaruh Belokan Tajam pada Pipa Besi Terhadap Perpindahan Panas pada Solar Water Heater Thaib Razali; Ahmad Syuhada; Ulul Rizza Jumada
Jurnal Teknik Mesin Unsyiah Vol 7, No 2 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v7i2.18238

Abstract

Solar energy is a renewable energy. In Indonesia the potential for renewable energy is very abundant but there is no optimal utilization. The use of solar energy, one of which is to use solar collectors to collect solar thermal energy. Solar water heater is a device that uses solar radiation and converts it into thermal energy. To get the most out of the collector, many ways can be done, one of which is the influence of the distance between the pipe passages, the length of the pipe passage and the diameter of the pipe bends. Then the closer the distance between the passage of the pipe will get the results of greater collector efficiency. In this research, the effect of sharp turns on the pipe with a total length of 4 meters is varied into 4 pipe length variations (70, 30, 20) cm and the shape of the Circle on the heat transfer of the solar water heater. From the research with the sun intensity of 691 W / m2 occurred in collector C (20 cm). The optimal results obtained are an outlet temperature of 64 OC with useful heat energy of 447.69 W / m2 and an efficiency of 89.98%, occurring at 14.00 WIB.
Pengaruh Penghambatan Kebeningan Kaca Terhadap Kemampuan Transfer Intensitas Cahaya Pada Kaca Muhammad Sayuthi; Ahmad Syuhada; M. Nizar Machmud
Jurnal Teknik Mesin Unsyiah Vol 2, No 2 (2014)
Publisher : Jurnal Teknik Mesin Unsyiah

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Abstract

The sun is the primary source of energy on the earth, but its light sometimes cause thermal discomfort for humans. The thermal engineering started one in the automotive sector in particular car is to install the air conditioner to lower the temperature of the cabin and use the tranfer window film to block sun light intensity. Testing the proper use of window film to determine the effect of inhibition of the ability to transfer the glass clarity of light intensity on the glass needs to be done to determine what percentage inhibition that has the intensity and the lower the cabin temperature, so the thermal comfort is achieved faster. From the results of the testing were conditioned using Solar ray Collector © PHYWE Systeme GmbH CO.KG. Inhibition obtained with 40% glass has an intensity of 39% and a temperature of 63.20 C, the glass has an intensity of 60% inhibition of 21% and a temperature of 61.90 C, the glass has an intensity of 80% inhibition of 8% and a temperature of 63.80 C. So the use of glass with 60% inhibition is best to accelerate the thermal comfort is achieved.
Kaji Sistem pengering Kakao dengan Menggunakan Energi Hybrid (Energi Matahari dan Bahan Bakar Gas) Ahmad Syuhada; Ratna Sary; Farid Isnan
Jurnal Teknik Mesin Unsyiah Vol 6, No 1 (2018)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v6i1.18225

Abstract

Cocoa one of the agricultural commodity which grow well that in Aceh and could producing the fruit for the rest of the year. In 2017, the wide of productive area reached 98,233 hectares (HA). The result of the crop was capable attained 32,403 tons/year. However, due to Aceh has climate tropical, when the dry season came, the drying process was still could on processing but when rainy season came, the drying process will be hampered and if the weather was still not sunny probaly it could make the fungus appeared. The aim of the research was to get the more optimal drying system so that it could be used when it was dry or rainy. The research described about drying system with 3 drying methods that is solar collector dryer, combustion dryer and hybrid dryer. From the result which conducted on 16 kg using a solar collector, the drying time was 25 hours with total energy used was 23.491,01 Kj. On the trial used hybrid energy, the drying time was 19 hours which total energy used was 160.636,19 Kj. On the trial used combustion energy, the drying time reached 14 hour with total energy used was 184.546,58 kj. in concluions that hybrid energy could get the best result in colour, kakao aromatic that more scents, no fungus, and the the seed could not break so that it reach I SNI quality.
Uji Pengaruh Sudut Kemiringan Kolektor Terhadap Distribusi Temperatur Iqbal Iqbal; Ahmad Syuhada; Hamdani Hamdani
Jurnal Teknik Mesin Unsyiah Vol 2, No 1 (2014)
Publisher : Jurnal Teknik Mesin Unsyiah

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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.
Analisis Kenyamanan Thermal pada Gedung Gelanggang Mahasiswa Prof. A. Madjid Ibrahim Universitas Syiah Kuala Teuku Zulfadli; Ahmad Syuhada; Zahrul Fuadi
Jurnal Teknik Mesin Unsyiah Vol 1, No 4 (2013)
Publisher : Jurnal Teknik Mesin Unsyiah

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Abstract

Student center building Prof. A. Madjid Ibrahim who has been reconstructed back in use as a meeting hall with a capacity of 500 people, but the results showed that the temperature in the room is empty conditions at 13:00 pm 32.7 0C, humidity 61%. The time charged 30 people occupants temperature during hours the same 33.5 0C, humidity 60%. While over 100 people filled the temperature at the same time at 34.4 0C, 57% humidity, and wind speed to the three conditions is 0 m / s. From the results of research on different floors 1 and 2 indoor temperature difference measured at 09.00 pm with the comfort standard is 2.2 0C obtained under thermal comfort in the building arena student Prof. A. Madjid Ibrahim is not achieved because the temperature of indoor air temperature outside the comfort standard SNI T03-6572.
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)
Publisher : Jurnal Teknik Mesin Unsyiah

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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)
Publisher : Jurnal Teknik Mesin Unsyiah

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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..
Co-Authors - Alchalil - Azhari - Hamdani - Mursalin - Ramadlan - Zulkifli . Zulfan Abraar Shalahuddin Adi Saputra Ismy Akhyar Akhyar Akhyar Akhyar Al Kautsar, Teuku Muhammad Aldine Al Munawir Amrizal Amrizal Anan Niazi Usman Andi Yusra Ansar, Khairil ARHAMI ARHAMI Arie Hantama Siregar Arya Rudi Nasution Asri Asyqar, Muhammad Aufa Azwinur Azwinur Bachtiar, Dandi Bayu Alif Satari Dandi Bachtiar Darmawan Darmawan Dedi Afandi Dogar Situmeang Erliadi Erliadi Erwin Ash'ari Fadliani Fadliani Farid Isnan Fazri Amir Fikri, Thaharul Hamdani Umar Heli Suansyah Ikhwan Ikhwan Iqbal Iqbal Ira Devi Sara Irwansyah Syam Junaidi Junaidi M Iqbal A.P M. Iqbal A.P. M. Nizar Machmud Maidi Saputra Masri Meliagrina Meliagrina Muhammad Faisal Muhammad Hatta Muhammad Ilham Maulana Muhammad Ilham Maulana Muhammad Sayuthi Muhammad Thaib Hasan Muhammad Yusuf Muhtadin Mustika, Yulanda Dwi Nasution, Muhammad Syukri Perangin-Angin, Alifia Kaneysha Putra, Mhd Irwansyah Putra, T. Edisah Ratna Sari Ratna Sari Ratna Sary Ratna Sary Razali , Razali Razali Razali Razali Thaib Razali Thaib Rizkia, Rizkia Sadam Husin Samsul Bahri Sarwo Edhy Sofyan Sofyan, Sarwo Edhy Suansyah, Heli Suriadi T. Edisah Putra Tarmizi Tarmizi Taufiq Taufiq Teuku Juliadi Teuku Zulfadli Teuku Zulfadli Ully Muzakir Ulul Rizza Jumada Umurani, Khairul Yufandi, Asra Yusmanizar Yusmanizar Zahrul Fuadi Zahrul Fuadi Zahrul Fuadi Zahrul Fuadi Zakirullah Zakirullah Zulfadhli Zulfadhli Zulfan Zulfan Zulkifli Zulkifli