Fabrication of prototype of stirling engine
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Fabrication of prototype of stirling engine

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This was the hardware project presentation prepared by our team on Stirling Engine during second year at VIT University Vellore. This was prototype of an SFA Stirling Engine.

This was the hardware project presentation prepared by our team on Stirling Engine during second year at VIT University Vellore. This was prototype of an SFA Stirling Engine.

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  • Full Name Full Name Comment goes here.
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  • Hey..where did you get the tin cans and stuff in vellore...??
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  • @ravrak Thanks a lot...I will try to make the amends that you have commented...Hope that ours works..Thanks again
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  • @navkiran-sandhu we made the prototype of the stirling engine... but it could not run. The main problem was that the diametrical clearance between piston and cylinder.Friction between crankshaft and hole also played foul sport. we faced some leakage problem too. i will suggest that you should use the cylinder and piston having very less diametrical clearence, just to avoid friction. take care of leackage through the upper hole(if you are working on SFA stirling engine model) . The examiner gave us good marks for choosing a interesting topic and working hard. hope you will eliminate those difficulty and come up with flying colours.
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  • Hey..I am also doing stirling for my project in VIT university only.
    Is the project easy and what were the reviews.Can you please tell..?
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  • If further help is needed you may check out with following links
    http://iprojectideas.blogspot.in/2008/08/stirling-engine-project.html
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Fabrication of prototype of stirling engine Fabrication of prototype of stirling engine Presentation Transcript

    • HARDWARE PROJECT
  • GUIDED BY : Mr. V.G. SRIDHAR(SMBS) TEAM MEMBERS: PRATEEK DEVAL(08BME163) RAVI SHEKHAR (08BME181) ASHISH DEVARTH (08BME037)
    • A stirling engine is a heat engine operating by cyclic compression and expansion of air or other gas, the working fluid ,at different temperature levels such that there is a net conversion of heat energy to mechanical work.
    • The engine was first invented in 1816 by “ROBERT STIRLING” so its name came to be stirling engine.
    • BASIC WORKING PRINCIPLE :
    • The main and the most basic principle underlying the working of a Stirling engine is “DIFFERENCE OF TEMPERATURE ON TWO SIDES OF CYLINDER OF THE STIRLING ENGINE”
    • Every stirling engine has a sealed cylinder with one part hot and the other cold.
    • The working gas inside the engine is moved by a mechanism from the hot side to cold side.
    • When gas is on the hotter side it expands and pushes up on a piston and vice-versa.
    • To understand the working of stirling engine and importance in the future.
    • To understand the process of planning.
    • Time management and problem solving.
    • To apply the learned manufacturing skills to fabricate useful projects.
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  • EXPLODED VIEW OF PROTOTYPE OF STIRLING ENGINE crankshaft Wire nut Connecting rod Balloon Top PVC Elbow Flywheel CD Crankshaft Support Wooden Board Ring Stand Pressure Vessel Bottom Displacer Pressure Vessel Top / / / ---
  • The idealistic stirling engine consist of four basic thermodynamic processes acting on fluid:
    • Isothermal expansion.
    • Constant volume heat removal.
    • Isothermal compression.
    • Constant volume heat addition.
    • To fabricate the model we followed the following methodology :-
    • Intensive study along with the analysis of problems.
    • Procurement of materials.
    • Making of ring stand.
    • Making of pressure vessel (top and bottom).
    • Making of displacer (top and bottom).
    • Making of various other parts and some other small works.
    • Assembly and testing.
  • 1.ISOTHERMAL EXPANSION. 2.CONSTANT VOLUME HEAT REMOVAL. 3.ISOTHERMAL COMPRESSION. 4.CONSTANT VOLUME HEAT ADDITION.
  • HEAT SOURCE AMBIENT TEMPERATURE DISPLACER CONSTANT HEAT SOURCE (CANDLE FLAME) ATMOSPHERRE
    • Stirling engine is used in the following ways :
    • 1. In submarines
    • 2. In cry coolers
    • 3. In room or space for cooling
    • 4. In aero planes where the air gets cooled at higher altitudes.
    • 5. In yatches where silence is valued
    • 6. As heat pump as it works irreversible cycle.
    • MAIN COMPONENTS OF STIRLING ENGINE PROTOTYPE :
    • RING STAND
    • PRESSURE VESSEL TOP
    • PRESSURE VESSEL BOTTOM
    • DISPLACER TOP
    • DISPLACER BOTTOM
    • CRANKSHAFT
    • CRANKSHAFT SUPPORT
    • Components Height Diameter
    • 1. Ring Stand 5” 2.5”
    • 2. Pressure Vessel To 1” 2.5”
    • 3. Pressure Vessel Bottom 3” 2.5”
    • 4. Displacer Top -- 2.4”
    • 5. Displacer Bottom 1.5 2.45”
    • 6. Crankshaft Support 6.5” --
    • 7. Connecting Rod 7”(Length)
    • 8. Crankshaft 10”(Length )
  • RING STAND PRESSURE VESSEL BOTTOM PRESSURE VESSEL TOP
  • DISPLACER BOTTOM DISPLACER TOP CRANKSHAFT SUPPORT CRANKSHAFT
    • MATERIALS USED :
    • TIN AND ALUMINIUM CANS
    • STRAIGHT PIN
    • ¾” PVC ELBOW
    • SMALL BALLOONS
    • FLAT WASHER AND NUT
    • METAL COAT HANGER
    • OLD CD
    • WOODEN BASE AND NAILS
    • WIRE NUT
    • GLUING AGENTS LIKE ARALDITE AND M-SEAL.
    • 1. Tin Snips
    • 2. Stainless Steel Scissors
    • 3. Hammer
    • 4. Pliers
    • 5. Hexaframe
    • 6. Wooden Mallet
    • 7. Drilling Machine
    • 8. Grinding Machine
  • MATERIAL NUMBERS COST ALUMINIUM AND TIN CANS 6 180 WOODEN BOARD 1 30 GLUING AGENTS 5 17 OTHERS MATERIALS AND MISCELLENEOUS COSTS 170 TOTAL = Rs.550
    • Opening of the can lid for making pressure vessel top ,pressure vessel bottom, displacer top and displacer bottom.
    • Non linear motion of straight pin through the hole of pressure vessel top.
    • Sliding of crankshaft through the holes in crankshaft supports.
    • Dissipation of heat from the space between the legs of ring stand.
    • Maintaining exact length of connecting rod through PVC elbow.
    • Can lid was removed by the grinding process.
    • The non–linear motion of straight pin was restricted using cap at the top of pressure vessel top.
    • Sliding of the crankshaft through the holes of the crankshaft supports was stopped using washer and m-seal.
    • Dissipation of heat is prevented using GI sheet wrapped around ring stand.
    • Length of connecting rod is still an area of concern .
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