MSc PROJECT
“Heat Transfer Effect on a
Nanostructured Tungsten Layer”
Shell Technical Presentation
Ch. Pramod Kumar
17th J...
Nanotechnology
Objective
Approach
Modeling
Computer Modeling
Analysis
Conclusion
Possible Future Applications
Why Nano as ...
Nano composite: Structures created by packing nanoparticles in a well defined pattern.
Nano: one billionth of a metre (10-...
Heat Transfer Effect on a Nanostructured Tungsten Layer
In macroscopic world: Tungsten is used for:
In nanoscopic world po...
Modelling: Four Layered Metal Ceramic Structure (FLMCS)
Tungsten+ Silica + 2 layers of Barium Titanate
W
BaTiO3
Nanotechno...
Tungsten (W): High melting point 3410°C
Boiling Point ~5700°C
Low expansion coefficient
Barium Titanate (BaTiO3): Signific...
Roughness
“Measurement of small-scale variations in the height of a physical surface”
Macroscopic Roughness > Nanoscale Ro...
Random Clustered
3.25% 50%
Cross-section-SA
Planar Defects:
Linear Defects: protrusions and indentations
Point Defects:
Mo...
Cross-section-SA
Functional/Thermal properties:
Effective thermal conductivity vs. Surface Area of contact-roughness
Effec...
Cross-section-SA
Fig: FLMCS with increased roughness
*Note: All the simulations are performed on the basis of conduction
d...
Cross-section-SA
Effective thermal conductivity decreases as the surface area of contact is
decreased by Fourier heat tran...
CNT NC
QW
CNT- Carbon Nano Tubes
NC – Nano Composites
QW- Quantum WiresAPPLICATIONS
SPECIFICATIONS
EXPLORATION
OF OIL
OIL ...
NANO = MORE CONTACT SURFACE AREA + SELF ASSEMBLY/RECOVERY
= MORE POSSIBILITIES OF REACTIONS AND RESULTS
IF NANO-COMPOSITES...
Why does it inspire me? Interest in Science, Einstein’s Ideas and Father’s Encouragement
Inspiration = (Power) (Creativity...
Shell Presentation1  By Pramod
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Shell Presentation1 By Pramod

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Shell Presentation1 By Pramod

  1. 1. MSc PROJECT “Heat Transfer Effect on a Nanostructured Tungsten Layer” Shell Technical Presentation Ch. Pramod Kumar 17th July 2007
  2. 2. Nanotechnology Objective Approach Modeling Computer Modeling Analysis Conclusion Possible Future Applications Why Nano as SSSC? Motivation through Education Synopsis
  3. 3. Nano composite: Structures created by packing nanoparticles in a well defined pattern. Nano: one billionth of a metre (10-9 m) Composite: a material that is made from several different substances. Nanotechnology: “The technology at molecular scale” Human hair: 1µm Nanotechnology
  4. 4. Heat Transfer Effect on a Nanostructured Tungsten Layer In macroscopic world: Tungsten is used for: In nanoscopic world possible applications………………?????????????? Microelectronic packing Mobile/PDA Power plants Machinery Objective
  5. 5. Modelling: Four Layered Metal Ceramic Structure (FLMCS) Tungsten+ Silica + 2 layers of Barium Titanate W BaTiO3 Nanotechnology: Tungsten is being looked for applications as a composite instead of standalone material Surface protection Minimised Heat Transfer Longer shelf life (for future possible applications) Project Heat Transfer Effect on a Nanostructured Tungsten Layer Approach
  6. 6. Tungsten (W): High melting point 3410°C Boiling Point ~5700°C Low expansion coefficient Barium Titanate (BaTiO3): Significant grain orientation High dielectric ferroelectric ceramics (electrical – fuel cells) Silica used for the surface uniformity of the layers How do we study the Heat Transfer characteristics…………..?????? Contd…
  7. 7. Roughness “Measurement of small-scale variations in the height of a physical surface” Macroscopic Roughness > Nanoscale Roughness Higher Surface area of contact for interaction Variation types: Linear Defect (1-Dimensional) Planar Defects (2-Dimensional) Point Defects (3-Dimensional) Modelling
  8. 8. Random Clustered 3.25% 50% Cross-section-SA Planar Defects: Linear Defects: protrusions and indentations Point Defects: Modelling Roughness of FLMCS Software (DIGIPAC, Ht3) & Theory Computational modelling
  9. 9. Cross-section-SA Functional/Thermal properties: Effective thermal conductivity vs. Surface Area of contact-roughness Effective thermal conductivity Vs Roughness (contact surface area) 0 0.5 1 1.5 2 2.5 3 0 20 40 60 Roughness (Surface area as %) EffectiveThermal Conductivity(W/mC) keff(max)- analytical keff -simulated keff(min)- analytical Analysis
  10. 10. Cross-section-SA Fig: FLMCS with increased roughness *Note: All the simulations are performed on the basis of conduction depending on surface contact area. No convection, radiation or external heat energy Contd…
  11. 11. Cross-section-SA Effective thermal conductivity decreases as the surface area of contact is decreased by Fourier heat transfer law Possible prediction of complex functional properties through simulations Barium titanate with improved grain orientation brings novel change in heat transfer through the structure Simulated values lies in the range analytical values. Fig: FLMCS with increased roughness Conclusion
  12. 12. CNT NC QW CNT- Carbon Nano Tubes NC – Nano Composites QW- Quantum WiresAPPLICATIONS SPECIFICATIONS EXPLORATION OF OIL OIL RECOVERY POWER ENERGY MUD-PUMPED POWERED DRILLS DRILL ENGINES TO DRILLS WELL CAPS, RUBBERS, DRILL BITS GASKETS NANO BATTERIES NANO ENABLE D GRID WITH STORAGE AND DISTRIBUTION CAPACITY AS AN IDEA SHIPPING OF ELECTRICITY FROM ONE PLACE TO ANOTHER SIMILAR TO OIL BATTERY SIZED TO W,M/C NO NEED TO COOL DOWN TO CRYOGENIC TEMPERATURE AS SUPERCONDUCTORS 1 COPPER WIRE = 2000 AMP 1 AQW (QUANT) = MILLIONS OF AMPS AQW – ARMCHAIR QUANTUM WIRE Possible future applications
  13. 13. NANO = MORE CONTACT SURFACE AREA + SELF ASSEMBLY/RECOVERY = MORE POSSIBILITIES OF REACTIONS AND RESULTS IF NANO-COMPOSITES ARE ADDED WITH SSSC = SURFACTANTS + SURFACE AREA + SELF ASSEMBLY + CATALYSTS MORE REFINED HYDRO-CARBONS FROM CRUDE DURING EXPLORATION, EXTRACTION AND REFINING EXAMPLE FOR HYDROPHOBIC SURF NANO-COMPOSITE/POLYMER COATING ON WELL CAPS WITH HYDROPHOBIC SURFACTANTS WATER REPELLANT = OIL RECOVERY PROCESS (EOR) EXAMPLE FOR HYDROPHILIC SURF ALLUMINIUM ALLOYS + H2O HYDROPHILIC SURFACTANTS NANO-COMPOSITE COATINGS ALLUMINIUM OXIDE + H2 = H2 IS FUEL FOR CARS AND AUTOMOBILES NOTE : SURF = SURFACTANTS; CONTENT FROM SCIENCE DAILY AND GOOGLE WEBSITES Why nano as SSSC ?
  14. 14. Why does it inspire me? Interest in Science, Einstein’s Ideas and Father’s Encouragement Inspiration = (Power) (Creativity. Confidence. Challenge) I = P C3 -----------(Equation 1) Whereas, According to Ampere’s Law, P=VI = I2 R Equation 1 can be written as I = (I2 R) C3 --------(Equation 2) According to great Einstein’s equation E = mC2  C2=E/m -----(Equation i) Substituting Equation (i) in Equation 2 we get, I = I2 R (C. E/m) Which can be written after solving m = I C R E (me, Motivation, mass)= (Inspiration) (Creativity) (Recognition) (Education) Motivation (Encouragement) = (Individual) (Creativity) ------- Einstein’s greatest quote What inspiration? Creativity and motivation Motivation through education

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