scholarly journals ADDITION OF HYDROFOIL TO SHIP RESISTANCE ANALYSIS ON HALASAN CLASS BASED ON VALIDATION TEST RESULT

JOURNAL ASRO ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 105
Author(s):  
Sutrisno Sutrisno ◽  
Wawan Kusdiana ◽  
Ayip Rivai Prabowo ◽  
Muhammad Askhuri
Keyword(s):  
Surface Area ◽  
Load Condition ◽  
Maximum Speed ◽  
Main Function ◽  
Full Load ◽  
Ship Resistance ◽  
Validation Test ◽  
Hit And Run ◽  
Wet Surface ◽  
Test Result

KRI Halasan - 630 is one of the Fast Missile warships with a length of 60 Meters which apart of fast patrol boat class which belongs to TNI-AL. Accordance with the main function not only as a fast missile boat but also as a patrol ship killer, this ship was made to have a high ability in “hit and run”. Since the beginning of the manufacture and after being inaugurated as KRI in 2014 this ship is able to reach speed until 27 knot in full load. As time goes on the same conditions the speed that this ship can achieve is 25 knot at maximum speed. This can be caused by increase in value from the resistance of the ship. One way to reduce the value of the resistance of the ship is to minimize the Wet Surface Area(WSA) from the ship. By adding hydrofoil technology will produce lift force which could lift apart of the hull ship from the water so that Wet Surface Area from the ship will reduce. From the calculation, to lift on the hull of KRI Halasan Class 20 cm in full load condition at 25 knot knows that dimension for fore foil with tapered straight type are wingspan 4,6 m, wingroot 1,33 m, wingtip 0,5 m, and swept angle 11°. And dimension for aft foil with rectangular straight type are wingspan 5,3 m, wingroot and wingtip 1,365 m, and swept angle 0°. The ship resistance with hydrofoil is 265,5 KN, while in the same condition and speed from the ship without hydrofoil the value of ship resistance is 267 KN. By adding hydrofoil technology could reduce the ship resistance 1,5 KN. This values could make 19,29 KW or 25,86 Hp in power saving.Keywords : Hydrofoil technology, Ship Resistance, Halasan Class

scholarly journals Experimental Analysis of Solar Assisted Refrigerating Electric Vehicle

2021 ◽  
Vol 9 (5) ◽  
pp. 305-315
Author(s):  
Surender Kumar ◽  
R.S. Bharj
Keyword(s):  
Electric Vehicle ◽  
Combustion Engine ◽  
Load Condition ◽  
Integrated System ◽  
Operating Conditions ◽  
Maximum Speed ◽  
Hybrid Energy ◽  
Full Load ◽  
Energy Mode ◽  
Battery Bank

Most refrigerating systems are driven by an internal combustion engine that increased the conventional vehicle's oil consumption and tailpipe emissions. The solar-assisted refrigerating electric vehicle (SAREV) system powered by a hybrid energy mode has been designed. The hybrid energy (solar + grid) was stored in the battery bank to complete this vehicle's necessary functions. The PV panels are prominently incorporated into this vehicle rooftop to charge the battery bank. In this study, the integrated system was driven by a hybrid energy mode that reducing the wastage and deterioration during temporary storage and transportation in different areas. The performance of the integrated system was tested under different operating conditions. The effect of load variation on maximum speed and travelling distance of vehicle was analyzed. The battery bank charging and discharge performance were studied with and without solar energy. The refrigerator was consuming 116 Wh energy per day to maintain a -12 oC lower temperature on the no-load condition at the higher thermostat position. The refrigerator was run continuously for 4-6 days on battery bank energy and 7-10 days on the full load condition of hybrid energy. The vehicle was travelling at a maximum of 23 km/h speed on full load condition. The vehicle needed torque 14-16 N-m at the initial phase for each load condition. Torque demand was decreasing with the increasing speed of the vehicle. The full-charged battery bank's initial voltage was 51.04 V, and the cut-off voltage was 46.51 V. The vehicle was covering a distance of 62.4 km with the battery bank alone at full load condition. It was travelling 68.3 km distance with hybrid energy mode. The vehicle's integrated system was the best in maintaining battery performance, power contribution capability, and drive range enhancement.

Validation Test Result Analysis of Plug-in Hybrid Vehicle

2013 ◽  
Author(s):  
Kenji Itagaki ◽  
Hiroaki Takeuchi ◽  
Shizuo Abe ◽  
Keita Hashimoto
Keyword(s):  
Hybrid Vehicle ◽  
Validation Test ◽  
Result Analysis ◽  
Test Result

scholarly journals STUDI ADSORPSI ZAT WARNA NAPHTHOL YELLOW S PADA LIMBAH CAIR MENGGUNAKAN KARBON AKTIF DARI AMPAS TEBU

Jurnal Kimia ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 104
Author(s):  
W. P. Utoo1 ◽  
E. Santoso ◽  
G. Yuhaneka ◽  
A. I. Triantini ◽  
M. R. Fatqi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Contact Time ◽  
Adsorption Process ◽  
Activation Process ◽  
Adsorption Model ◽  
High Adsorption ◽  
Prolonged Contact ◽  
Test Result

The aim of this research is to get activated carbon from sugarcane bagasse with high adsorption capacity to Naphthol Yellow S and to know factors influencing the adsorption capacity. Activated carbon is prepared by incomplete combustion of sugracane bagasse. The resulting carbon is activated with H2SO4 with concentration variation of 0.5; 1.0; 1.5 and 2.0 M and is continued by calcination at 400 °C. The measurement of the surface area of ??activated carbon by the methylene blue method indicates that the activation process successfully extends the surface area of carbon from 31.87 m2/g before activation to 66-72 m2/g after activation. Activated carbon with concentration of 2.0 M H2SO4 showed the highest surface area of ??71.85 m2/g, however, the best adsorption was shown by activated carbon with a concentration of 0.5 M H2SO4 with the adsorption capacity of 83.93%. The adsorption test showed that the best amount of adsorbent was 0.2 g with contact time for 30 minutes. Prolonged contact time can decrease the amount of Naphthol Yellow S adsorbed. The best adsorption test result was shown by sample with activator concentration of 0,5 M, mass of 0,2 g and contact time of 30 min with adsorption capacity 95,81% or amount of dye adsorbed equal to 143,72 mg/g. The adsorption study also showed that the entire Naphthol Yellow S adsorption process followed the Langmuir isothemal adsorption model. Qualitative testing of real batik waste indicates that activated carbon can reduce the dyes waste containing Naphthol Yellow Sexhibited by the color of batik waste which is more faded.  

The Emission Performance Research and Analysis of Diesel Engine Fueled with Biodiesel Hybrid Fuel

2012 ◽  
Vol 610-613 ◽  
pp. 1501-1504
Author(s):  
Gui Fu Wu ◽  
Ji Yi Luan ◽  
Yuan Hua Jia ◽  
Dong Hua Jiang
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Load Condition ◽  
Biodiesel Fuel ◽  
Smoke Emission ◽  
Emission Performance ◽  
Full Load ◽  
Consumption Ratio ◽  
Performance Research

Biodiesel can be made from the esterification with plant or animal fat.It has been being paid more and more attention for its characteristics of non-sulphur, non-arene,higher hexadecane and biodegradablity and renewablity Biodiesel is similar to No.0 diesel in characteristics,so it can be applied to engines directly without changing the structure.This article shows the emission performance of diesel mixed with biodiesel fuel which in different proportion,and its CO, HC and smoking exhaust have been decreased greatly,then NOx increase slightly,while the fuel-consumption ratio remains stable(when on full load condition,5%, 15% and25% of hybrid fuel compared with pure diesel fuel,HC emission decreases by 15%,33.3% and 83.3%,and carbon smoke emission decreases by 16.25%,51.8% and 63.6%).

Effects of partial addition of n-butanol in rubber seed oil methyl ester powered diesel engine

2017 ◽  
Vol 231 (7) ◽  
pp. 607-617 ◽  
Author(s):  
Vishal V Patil ◽  
Ranjit S Patil
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Seed Oil ◽  
Load Condition ◽  
Rubber Seed Oil ◽  
Volume Percentage ◽  
Rubber Seed ◽  
Performance And Emission ◽  
Full Load ◽  
Hc Emissions

The objective of present study is to evaluate the combustion, performance, and emission characteristics of refined biodiesel (biofuel) such as rubber seed oil methyl ester with the partial addition of n-butanol (butanol) in it in a single cylinder four stroke diesel engine operated at a constant speed of 1500 rpm. Various characteristics of butanol–rubber seed oil methyl ester blends with varying volume percentage of butanol such as 5, 10, 15, and 20 in butanol–rubber seed oil methyl ester blends were compared with the characteristics of neat rubber seed oil methyl ester (100%) and neat diesel (100%) at various load conditions on engine (such as 0%, 25%, 50%, 75%, and 100%) for the compression ratio 18. It is found that brake specific fuel consumption was increased by 17% with an increase in butanol content from 5% to 20% in butanol–rubber seed oil methyl ester blends at full load condition. Brake thermal efficiency was decreased by 14% with an increase in butanol content from 5% to 20% in butanol–rubber seed oil methyl ester blends at full load condition. Carbon monoxide and HC emissions were found to be negligible, i.e. less than 0.1% and 35 ppm, respectively, for all selected fuels. NOx emissions were decreased by 10% with an increase in butanol content from 5% to 20% in butanol–rubber seed oil methyl ester blends at full load condition. Various characteristics were compared for six fuels (neat rubber seed oil methyl ester, four renewable butanol–rubber seed oil methyl ester blends, and neat diesel) in order to finalize the promising alternate sustainable renewable fuel in place of shortly diminishing conventional diesel fuel in order to provide the solution for increase in demand and price of conventional fuel (diesel) for power generation and to reduce the serious issues concerned with environmental pollution due to usage of neat diesel.

scholarly journals Experimental Investigation of Performance Characteristics of Compression Ignition Engine Fuelled with Punnai Oil Methyl Ester Blended Diesel

2017 ◽  
Vol 60 (1) ◽  
pp. 23-28
Author(s):  
Mathan Raj Vijayaragavan ◽  
Ganapathy Subramanian ◽  
Lalgudi Ramachandran ◽  
Manikandaraja Gurusamy ◽  
Rahul Kumar Tiwari ◽  
...  
Keyword(s):  
Cetane Number ◽  
Load Condition ◽  
Calorific Value ◽  
Mechanical Efficiency ◽  
Performance Characteristics ◽  
Brake Specific Fuel Consumption ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Brake Thermal Efficiency ◽  
Full Load

Biodiesel is a renewable substitute to conventional diesel and offers cleaner performance. Thispaper deals with performance characteristics of four stroke, water cooled Compression Ignition (CI) enginefuelled with four different oils: diesel, diesel-punnai oil biodiesel 10% (B10), diesel-punnai oil biodiesel20% (B20) and diesel-punnai oil biodiesel 30% (B30). The present research, experiments were conductedto study the effect of viscosity, cetane number, flash point, calorific value and density on performancecharacteristics of diesel, Punnai oil biodiesel and its different blends (B10, B20, B30). The experimentalresults of this study showed that the diesel has 2.6% and 4.6% higher brake specific fuel consumption(BSFC) as compared to B10 and B20, respectively at full load, whereas BSFC of diesel was same as B30at higher load. Volumetric efficiency and mechanical efficiency of B10 was 1.2% and 7.5% higher ascompared to diesel at full load condition. Brake Thermal Efficiency (BTE) and indicated thermal efficiencyof B20 was 8.12% and 7% higher as compared to diesel at full load. From this study, it is concluded thatPunnai oil biodiesel could be used as a viable alternative fuel in a single cylinder, four stroke, water cooleddirect injection diesel engine.

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