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Turbulen : Jurnal Teknik Mesin

turbulen
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Published by UNIVERSITAS TRIDINANTI PALEMBANG

ISSN : 26213354 EISSN : 26560186 DOI : http://dx.doi.org/10.3676

Core Subject : Science, Engineering,

Materials Science & Nanotechnology Mechanical Engineering

Turbulen (pISSN 2621 3354) It's focused on original articles in the form of research results or literature review which provides insight in the field of mechanical engineering and machinery that includes the field study of energy conversion such as combustion engineering, internal combustion engine, fluid dynamics, thermodynamics, heat-mass transfer, HVAC (Heating, Ventilation and Air Conditioning), tribology and sustainable-renewable energy. The field study of metallurgical sciences like materials processing, heat-treatment, metal forming-testing and advances materials. Construction field study with analytical and computational of mechanical rigid body as well as structural mechanisms and manufacturing-industrial study such as metal machining, manufacturing processes and manufacture engineering or as well as other related mechanical engineering field study.

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Articles 9 Documents

Search results for , issue "Vol 1, No 1 (June 2018)" : 9 Documents clear

RANCANG BANGUN ALAT PEMANAS AIR TENAGA SURYA DENGAN KONFIGURASI TUBE SERPENTINE BERKAPASITAS 100 LITER Heriyanto Rusmaryadi; Rita Maria Veronika; Edy Purwanto
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

The purpose of this study is to test and determine the performance, and the factors that affect the performance of a solar water heater. The collector type is a flat plate and the configuration of collector pipe is serpentine. The results show that the important parameters are; the intensity of solar radiation, the sun's position for every hour, and the speed of the wind. The average efficiency of the solar water heater is 40.02%, while the average of the biggest losses due to heat loss occur in the upper area of the collector box is Ut = 2.09 W/m2.0C or 67.11% of total losses. Keywords: Solar water heater, flat plate collector, serpentine, performance, losses

PERANCANGAN MESIN REFRIGERASI KOMPRESI UAP PENYIMPAN TELUR AYAM Hendra dinata
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

Cooling Machine for eggs Storage are needed to keep the quality for storage for a long time. The purpose of this research is to design egg storage machine to be guaranteed Nutritional Value, Quality and economic. This plan begins by calculating the coolant load, determining the storage design and the component of the refrigeration component. Based on the results of analysis to store eggs with a capacity of 20 Kg with the dimensions of Length (P) x Width (L) x Height (T) = 70 cm x 70 cm x 80 cm, Found that the Transmission load is 32.1195 Watt, Infiltration load is 1.3853 watts and Product load = 18.692 watts. The required compressor capacity is 21.796455 W. The required Evaporator capacity is 0.1021338 kW and the required Condenser capacity is 123,930255 Watt. Keywords: Cooling Machine, design-build, cooling load

STUDI KINERJA PLATE HEAT EXCHANGER PADA SISTEM PENDINGIN PLTGU Ridho Walikrom; Abdul Muin; Hermanto .
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

A plant (PLTGU) to operate with the maximum is to maintain the effectiveness of equipment used to keep clean of the pollutant factor. In a PLTGU, one of the cooling aids is a Plate Heat Exchanger (PHE) plate heat exchanger that uses water as a cooling fluid, the use of unclean water can decrease the effectiveness of the equipment due to the impurity factor. Here a study has been conducted to determine the effectiveness of the plate type heat exchanger before and after cleaning due to contamination by the cooling fluid. Data retrieval is done directly in the form of operational data directly and also through manual book. Calculation of effectiveness is done by using the method of Number of Turbidity Unit (NTU). From the calculation of the effectiveness obtained before the cleansing of 83%, while after cleaning by 85%, here with the cleanup gives an increase of PHE effectiveness by 2%. Keywords: Efectivitnes, plate heat exchanger, NTU method

UJI PERFORMANSI PEMANFAATAN PANAS KONDENSOR SISTEM KOMPRESI UAP 2 HP R-407c TERHADAP SISTEM ABSORPSI Haryanto .; Baiti Hidayati
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

The generating system of the Absorption Refrigeration Trainer with Solar Cell Panel Unit (RBA-ART-S) is one type of cooling systems. Working principle that exist in absorption system one of them using heater, while in vapor compression system, heat is discharged by condenser to environment. If the refrigerant in the absorption system gets additional heat from the condenser in the vapor compression system it will accelerate the heating of the refrigerant present in the absorption system. From the above statement, the authors do research on absorption machine with variation of heat source by using the heat from LPG gas and also with the addition of heat calorific source from the condenser of the vapor compression system, so that the heat from the condenser can be utilized. The parameters taken in this performance test are temperature. Based on the test results obtained niali COP in the absorption system by using LPG gas of 5.781 while the value of COP for the utilization of heat of condenser with LPG gas is 5.941. Thus the process of utilizing condenser heat and LPG gas (combinations) has a higher COP value, in other words there is an increase in performance with the utilization of exhaust heat from the condenser. Keywords: COP, Refrigeration, and Absorption

MODIFIKASI ALAT PENCABUT PAKU PADA DINDING BANGUNAN Zulkarnain Fatoni
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

Nails are hard pointed metal, generally made of steel, used to attach two materials by penetrating both. Nails are generally blown on materials using a hammer or nail gun that is driven by compressed air or a small explosive impulse. Attachment by spikes occurs in the presence of friction forces in the vertical direction and force of force in the lateral direction. The tip of the nail is sometimes bent to prevent the spikes coming out. One of the purposes of making this tool is as an alternative tool that has been used only to open the axle, bearing and the other but can be used to remove the spikes with little modification. From the results of the discussion and can be the force of the tensile rod on the spikes F = 4.5 kg), shear stresses that occur in the shaft thread (tg=0,542 kg/cm2), Initial shear Stress (tg=30,5 kg/cm2), yield bend that occurs in the rotary lever (sb=42,993 kg/cm2). then the modification of the nail-pulling device on the wall of the building can be used properly. Keywords: Nails, Lateral Directions, Yield

RANCANG BANGUN MESIN PENUMBUK SAGU UBI KAYU UNTUK PROSES PEMBUATAN BERAS ARUK DENGAN MOTOR LISTRIK 0,5 HP Mahdi .; Firlya Rosa; Saparin .; Eka Sari Wijianti
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

The pulverization of cassava sago is one of the main of traditional aruk rice.To get a chewy and very chewy level of sago requiresto pulverize ± 50 minutesfor 1 kg cassava sago. To speed up the pulverization process, it was designed a sagopulverization machine with a 0.5 HP electric motor power. The design method uses the French method, with the pulley and v-belt as atransmission system to actuate the eccentric shaft so that the pounder will move up and down. The fixed variable is time and it will set for 10 minutes and 12 minutes with result analysis using visualization method to 10 respondents. The force that generated by eccentric shaft and transmitted to the pounder of 1.010 N produce the chewy level of sago at 10 minutes to pulverization process with capacity 6 kg / hour and the very chewy level at time 12 minutes with capacity 5 kg / hour.This machine will reduce time of pulverization process until 76-80% compared to the manual process. Keywords: Aruk rice, grinding machines, electric motors, elasticity

PEMBENTUKAN ENERGI YANG POTENSIAL YANG BERPUSAT PADA SISTEM HVAC ATAS TATA KELOLA UDARA STRUKTUR RUANG BANGUNAN PERKOTAAN DI KOTA PALEMBANG YANG DIPENGARUHI IKLIM CUACA Martin Luther King; Muhammad Ali; Sukarmansyah .; Muhammad Iskandar Badil
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

Stringent ventilation regulations make the humidity problem more serious. In modern society, people spend most of their time in built environments. More attention has been paid to indoor air quality and indoor thermal comfort. Fresh air centered HVAC systems are necessary for almost all buildings. In this chapter, a quantitative analysis is provided for the energy expenses and possible savings in fresh air ventilation. More specifically, hot and humid climates like Palembang are selected as the calculating sample. Under such climates, moisture recovery is more important than sensible recovery. Keywords: Humidity,Fresh Air, indoor thermal, HVAC, Palembang Society

ANALISA KEGAGALAN PADA DRILL PIPE DI RIG PDSI D1500/53 Anggoro Tri Prakoso; Suhardan .; Ozkar Firdausi Homzah; Sofwan Hariadi
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

Oil and gas industry use drill pipe to make a well bore, the drill pipe conected one by one by operator.Drill pipe is the important tools to make the hole deeper to reach the resevoir. Another function of drill pipe is to trasnfer the mud and make the circulation during the drilling job. Non productive time on oil and gas drilling operation is undesirable for several reason. One of them is the economic, because it can increase cost, time, and decrase productitity. The problem that often happends is failiure of drill pipe. This paper is aimed to analize the charateristic faiulure on drill pipe in PDSI D1500/53 drilling rig. Material examination which have been done is tensile test, hardness test, spectometer test, fractography, and SEM EDX. The result shoed that fatigue and corrosion fatigue was the root cause of failiure. Keywords: Drill Pipe, Failure, Fatigue

ANALISA CFD PENGARUH LOKASI PEMASANGAN FLOW STRAIGHTENER BESUDUT 450 TERHADAP PEMBACAAN FLOW METER Pramadhony .; Muhammad Lazim; Muhammad Amin Fauzie; Togar P.O. Sianipar
Jurnal Turbulen Vol 1, No 1 (June 2018)
Publisher : Universitas Tridinanti Palembang

A chemical plant needs some high accurate instrumentations in order to support an efficient production process. Flow meter, one of instrumentation types, has function to read the flow rate of a fluid. The error of reading in flow meter can cause some problems such as incorrect reaction doses and the error in the amount of product transferred to consumer. Flow meter installation has to fulfil some requirements in order to achieve an accurate measurement. The altering of flow direction can change the flow pattern and triggers a swirling flow which has to be avoided when it flows through flow meter. Generally flow meter is designed can be work well in an ideal condition. The requirements are a uniform velocity profile, free from a swirling flow and turbulence flow regime. A limitation of space sometimes causes a problem when installing flow meter in an ideal condition. A 45° inclination of flow straightener has better performance in eliminating the swirling flow and improving the velocity profile. By installing the flow straightener in various locations, the required fluid pattern can be obtained as closer as possible form the upstream. In this research, the authors conduct a CFD analysis to the flow of bio-diesell inside the pipe before it is read by flow meter. Keywords: : Flow Straightener, Swirling Flow, Flow Meter

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