1 / 10

Small-scale Combustion

Small-scale Combustion. Betty Bui ME 258 Fall 2012. Introduction. Lithium versus Hydrocarbons. Small-scale Combustions. Advantages More efficient Reduce waste and emissions (CO and NOx) Disadvantages Manufacturing Properties not linear Heat recirculation Heat loss

yonah
Download Presentation

Small-scale Combustion

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Small-scale Combustion Betty Bui ME 258 Fall 2012

  2. Introduction • Lithium versus Hydrocarbons

  3. Small-scale Combustions • Advantages • More efficient • Reduce waste and emissions (CO and NOx) • Disadvantages • Manufacturing • Properties not linear • Heat recirculation • Heat loss • Pollutant formation

  4. Categories

  5. Timeline of Development • 1998: Waitz – 1st micro-combustor of 0.13cm3 • 2002: Weinberg – Swiss Roll Combustor • 2002: Sirignano – Liquid fuel flow directly on walls • 2003: Liedtke and Schultz – Liquid film in annulus around tube • 2004: Kaiser and Kyritsis – Meso-scale catalytic combustor via electrostatic spray • 2004: Wang – Swirl-stabilization combustion • 2005: Anh - Gas-phase and catalytic combustion in Swiss-Roll • 2005: Spadaccinni – Hybrid micro-combustor • 2005: Yuasa – Flat-flame micro-combustor • 2006: Marbach and Agrawal –Porous inert material

  6. Approaches • Excess Enthalpy • Regenerative preheating • Redistribute thermal energy • Minimizing heat losses • Heat Exchanger • Counter-flow current • Heat Transfer • Convection • Radiation

  7. Swiss Roll Combustor (SRC) • Combustion Chamber • Pair of long channels

  8. Porous Inert Media (PIM) • Two concentric cylinders • Preheated reactants in annulus prior to PIM

  9. Conclusion • Swiss-roll combustor and Porous Inert Media • Excess Enthalpy • Regenerative Reheating • Heat transfer modes • Leaner combustion • Reduced emissions

  10. Questions? The end…

More Related