Charcoal Briquettes Mockup Review 2.009 Blue Team A Dexter Ang, - - PowerPoint PPT Presentation

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Charcoal Briquettes Mockup Review 2.009 Blue Team A Dexter Ang, - - PowerPoint PPT Presentation

Feb 03, 2024 186 likes •313 views

Charcoal Briquettes Mockup Review 2.009 Blue Team A Dexter Ang, John Brewer, Kevin Chen, Greg Fonder, Danny Hilton, Matt Krueger, Andres Pino 2.009 Blue Team A October 21, 2004 Key Challenges Loading Hopper design Position of

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2.009 Blue Team A

Charcoal Briquettes


Mockup Review

2.009 Blue Team A Dexter Ang, John Brewer, Kevin Chen, Greg Fonder, Danny Hilton, Matt Krueger, Andres Pino

October 21, 2004

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2.009 Blue Team A

Key Challenges

○ Loading

  • Hopper design
  • Position of feedscrew

○ Output nozzle

  • Length
  • Diameter
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2.009 Blue Team A

Emulating Bagasse, 1

○ Raw bagasse not

yet available (harvesting now)

○ Instead, crushed

charcoal briquettes to emulate carbonized bagasse

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2.009 Blue Team A

Emulating Bagasse, 2

○ Crushed charcoal

then sifted to remove larger pieces

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2.009 Blue Team A

Mixing

○ Crushed/sifted

charcoal mixed with tapioca binder to form extrudable mixture

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2.009 Blue Team A

Extrusion with Meat Grinder

○ Used 3/4”

diameter output nozzle

○ Good briquettes,

but poor loading from hopper

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2.009 Blue Team A

Benefits of Extrusion

○ Average density of 0.95 g/mL (extruded),

compared to 0.48 g/mL (hand-formed)

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2.009 Blue Team A

Concept Mockup

○ Utilizes 2” OD

earth auger bit

○ Designed to test

configuration of hopper

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2.009 Blue Team A

Improved Hopper Design

○ Feedscrew loads

from all directions, not just from above

○ Continuous feed

without additional input

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2.009 Blue Team A

Playing with Nozzles

○ First used short barrel (2” diameter)

that tapered to a 3/4” diameter nozzle

  • Generated large thrust forces
  • Too much for our thrust bearing

○ Then used longer barrel without any

taper (2” diameter)

  • Produced fairly good briquettes
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2.009 Blue Team A

Conclusions / Further Work

○ Meat grinder proved viability of

extrusion, revealed issue with loading

○ Concept mockup validated an

improved hopper/feedscrew interface

○ Further work needed to improve thrust

bearing, optimize nozzle