Engineering CoffeeThe Technical Side to Your Favorite

Beverage

Jill Clevenger, Ashley Truax

We make coffee. So what do we need engineers for?

Source

• Wet Mill

• Washing Channel

• Sorting Table

Source

• Sustainability

• Process Improvement

• Efficiency

Waste In (Cherries, Waste Water, Honey Water)

Biodigester

Biogas Out

Solid Waste to Compost Fertilizer to Farms

Gas Used for Power to Equipment and Homes

Process

Process

• Roast Duration: 600sec-900sec

• Roasted coffee is 17% lighter than green bean

• Peak temp approx. 400°F

H2O evaporated

Bean Exothermic point

Peak Temperature

Discharge to Cooling Tray

TimeTime

Burner Temp decreases

Cold green beans In

Package

Each product has individualized

equipment requirements

Package

Q - QualityD - DeliveryC - CostS - Safety

Engineering Solutions

• Root cause analysis, design improvements, machine upgrades/fixes

• Example: Premature failure, Shaft wear

Layout Design and Flow

• Layouts

• Utilities

• Plant flow

• Material flow

• People flow

Raw Material In

Finished Goods Out

Utilities

Brew!

• Single Serve Brew

Thank you!

1. Picture 1- Coffee brewing1. http://www.businessinsider.com/whitney-tilson-6-reason-to-be-long-netflix-and-short-green-mountain-2011-11?op=1

2. Picture 2- Women picking beans1. www.greenmountaincoffee.com

3. Picture 3- roasted beans 11. http://www.best-guide-to-espresso-machines.com/how-to-roast-coffee.html

4. Picture 4- Cooling roasted beans1. http://www.eat.wasabigelatine.com/2007/10/09/intelligentsia-coffee-roasting-works-tour/

5. Picture 5- Coffe cup & Kcup1. http://cmsimg.burlingtonfreepress.com/apps/pbcsi.dll/bilde?

Site=BT&Date=20091125&Category=NEWS01&ArtNo=91124029&Ref=AR&MaxW=640&Border=0&GMCR-bidding-war-Calif-roaster

6. Coffee roast process-1. http://ars.els-cdn.com/content/image/1-s2.0-S1359431103000334-gr1.jpg

7. Roast profile1. http://cuppajoel.files.wordpress.com/2012/01/malawi-roast.png

8. Keurig brewed1. Keurig.com

9. Hardness comparison1. http://en.wikipedia.org/wiki/Hardness_comparison