Tatsu

Red B

Induction Heating for Ski Boots

Tatsu

Induction heating for cold toes

Skiers use removable inserts

Resorts buy portable stands

Key Questions

How much power will this use?

Can induction heating be used safely?

How can we get reliable wireless feedback?

How much time will heating take?

Sketch Model

Coil

Ferrous washer

Paper (.25 in)

50

100

150

200

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Tem

pera

ture

(°F)

Time (Minutes)

Induction Heating Time for Various Power Inputs

Run1 Run4 Run5 Run2 Run3

15  W    17.5  W    20  W    30  W    40  W    

120°F  Goal  Temp    

0

200

400

600

800

1000

1200

1400

0 0.5 1 1.5 2 2.5 3

Pow

er (W

)

Distance from Coil (in)

Projected Power Required at Various Distances

Expected Range of Sole Thickness

Resort Power Use

•  Ski resorts can pull up to 7.2 megawatts of power under heavy load

•  At 500 watts per station, 20 stations only represent 10 kW (~0.15% of total usage)

Looking Ahead

•  Scale up our test coil to a more realistic size.

•  Find a way to integrate temperature sensing and feedback for controls.

•  Test safety of inserts and interactions with metal implants and jewelry.

Thank You

Citations

Red B

Search Results for “Mail Box.” http://www.homedepot.com/b/N-5yc1vZ12kxZ12le/Ntk-All/Ntt-mail%2Bbox?Ntx=mode+matchall&NCNI-5. Oct 7, 2015.

State and Country Quick Facts USA. http://quickfacts.census.gov/qfd/states/00000.html. Oct 7, 2015.

Projected Smart Home Revenues. http://www.statista.com/statistics/296082/the-americas-smart-home-market-revenue/. Oct 7, 2015.

First Research, Inc., Gift, Novelty & Souvenir Stores Industry Profile, http://www.firstresearch.com/Industry-Research/Gift-Novelty-and-Souvenir-Stores.html(Accessed 10/7/2015)

Schneider Electric, “Schneider Electric Case Study: Bear Creek Mountain Resort” (2008). <http://www.powerlogic.com/pdf/cs82.pdf>

Market118 million

households in the US

$290 billionsmart home market

 

$40 - $2,000price range for mailboxes

 

Snail Mail Appendix A

Open Envelope

POR : Electric Letter Opener

Other Methods Tested:•  Steamer•  Manual Letter Opener

Snail Mail Appendix B

Competition

Mail Pile on Table

Personal

Cubbies

Industrial Letter Opener

HumanService

Snail Mail Appendix C

Questions Answered in Sketch Model

Do people want a product that can open and prioritize mail?

Can a device cut, extract, and unfold mail?

Snail Mail Appendix D