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Marine Engineering

$30-250 USD

Teljesítve
Kiadva ekkor: majdnem 2 évvel ezelőtt

$30-250 USD

Teljesítéskor fizetve
A cargo vessel has admirably coefficient of 500, fuel coefficient of 120,000 and service speed of 19.9 knots. Her propulsion is powered by a single 2-S, 9-cyl. marine engine with compression ratio 22. Cylinder bore 1m and piston stroke 2.5m directly driving a single fixed-pitch screw propeller , at C-MCR the engine delivers 40MW of brake power at 100rpm. The engine can run on diesel fuel (MDO) with formular C12.3H22.2, lower heating value of 42500 kJ/kg and stoichiometric A/F 14.5 employing a diesel cycle or natural gas (NG) mainly consisting of methane with formula CH4, lower heating value of 49770 kJ/kg and stoichiometric A/F 17.2 employing an Otto Cycle. The mechanical efficiency of the engine is 0.95 and all partial engine efficiencies are the same regardless of the fuel employed. Finally, the Fuel Coefficient of the vessel when running on MDO is 120,000. 1. Find SFOC of the engine when running on either fuel mode (MDO or NG). Assuming that both ambient and scavenging air receiver temperature is 35 centrigrade, entrapped air efficiency is 1.0 and total air excess ratio is 2.5. Find the scavenging receiver air pressure required for both fuel modes of the engine (MDO and NG). Then, calculate the turbocharger compressor power requirement and turbocharger turbine power production assuming that isentropic efficiency is 0.85 and 0.80 respectively and the mechanical turbocharger efficiency is 0.98. Finally, write the perfect combustion reaction for each fuel mode showing the mass amounts of fuel, air and combustion product components per cylinder and per cycle. Ambient pressure is 1bar. For air R = 287 J/kg/K, Y = 1.4; for exhaust /combustion gas R = 277 J/kg/K, Y = 1.3
Projektazonosító: 33721524

A projektről

3 ajánlat
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Aktiválva: 2 évvel ezelőtt

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Felhasználó avatár
Hi sir I am a mechanical engineer and I have six years of experience in mechanical design based on 3d modeling in solidworks for mechanical. I am interested at your project and I think this topic is very similar to my proficient skill. Can we discuss more and more about the project? I hope you reply to me to progress your project. Best Regards
$65 USD 2 napon belül
4,8 (86 értékelés)
5,7
5,7
3 szabadúszó adott átlagosan $78 USD összegű árajánlatot erre a munkára
Felhasználó avatár
hello I'm a professional 3D/CAD modeler and product designer. The services I offer include: • 3D modelling (moldings, complicated parts, assemblies, whatever you want), based on your sketches, drawings, pictures or just fantastic ideas, using Solidworks, Autodesk Inventor or Fusion 360. • Creating set of manufacturing drawings based on 3D models/assemblies. • Creating flat patterns. • Converting STL files to solid models (STEP, IGS, X_T). • Creating STL, IGES and STEP files for 3D printing. • Creating DXF files for CNC/Laser/Plasma cutting. • 2D CAD drafting in AutoCAD (architectural and technical drawings, converting from pdf/images to AutoCAD).  Don't be afraid to contact me in chat - I'll answer all your questions. Kindly check my portfolio and feedback below. Thanks Azra Azeen
$140 USD 7 napon belül
5,0 (13 értékelés)
4,9
4,9
Felhasználó avatár
Hi sir how are you I am expert engineer I will solve your marine engineering problem described Kindly message me waiting positively
$30 USD 1 napon belül
5,0 (2 értékelés)
2,2
2,2

Az ügyfélről

KENYA zászlója
Nairobi, Kenya
0,0
0
Fizetési mód hitelesítve
Tagság kezdete: máj. 18, 2022

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