Aaron Debbink

Wednesday, May 14th

Outline● CBL Unit Overview● Design Activity from Unit● Bicycle Generator

Construction

Introduction

Off-the-Grid CEEMS Unit Materials

https://docs.google.com/document/d/1nSlDDCJFH1TpwAJn8WdT1iPw5JROtM1daEx5JN_bWro/edit?usp=sharing

. . .

World’s Strongest Man: Atlas Stones1. Throughout the challenge each man loses energy. Where

is this energy stored?2. Does one man lose more energy than the other during the

competition? Why?3. How is the winner (the strongest and most powerful man)

determined?

http://www.youtube.com/watch?v=u1MHQRGef5s

Introducing “Power”

“Power” Concept

Strength or POWER is measured by…

A. The energy transferred or “used”.

B. The time it takes to complete the task.

Units:J/s = Watts

…also measured in units of horsepower (746W = 1hp)

Strongest Student Competition

● Find the total work done / energy exerted and the amount of time to do it.

h

m

h = 0m

● A “free day” from conventional learning and electricity. Nothing can be powered using energy provided by the school.

● Lab groups come up with a proposal and present...● Activities (Power requirements & total

energy needed)● How to generate needed energy from

bike (stored prior to the activity).

● Each class will vote and chose one proposed activity. ● If the needed energy is produced / stored we will do

the activity on Off-the-Grid Day.

Measure Average Power Output

Power (W)

time (s)

0

0

Volunteers?

Initial Group Proposals

Total EnergyNeeded

Plan to Provide Needed Energy

byBicycle

Generator

Formal Proposal Presentation

Final Proposal Presentation

● Make a Google Presentation (share with your group and ME).

Name: "Bell# Off-the-Grid Proposal (Name1, Name2, etc...)"

1. Description of the proposed activity for our future Off-the-Grid day.

2. Diagram, picture or illustration advertising your proposed activity.

3. Needed Energy Calculations for all of your electronic devices.

4. Plan to store the needed energy using the bicycle generator. How much time to pedal?

Sample Student Proposal

Project Description!!!

Needed Energy Calculations

Needed Energy Calculations

Needed Energy Calculations

60,000J for the Wii +210,000J for the TV Cart

= 270,000J for the activity

Plan for Storing the Energy

To partake in this activity we calculated that we will need to pedal a mere hour and a half. We have a pedaling incentive of whomever pedals will go before those who did not pedal. From the survey, 24 people responded that they would contribute to pedaling the bike. 90min/24 people = 3.75min per person (time varies depending on your personal power.

Design Activity

Total EnergyNeeded

Plan to Provide Needed Energy

by Bicycle Generator

Whiteboard Off-the-Grid

Proposal

● Activity & Devices

● Total Energy Needed

● Pedaling Time to

store energy

● Related Artwork

*Use Power Ratings Handout*

Sample Power RatingsDevice Power (W or J/s)

LED TV (10 in) 10W

Old TV (20 in) 70W

Speakers ONLY 5W

Blu Ray Player ONLY 22W

Laptop playing DVD 45W

Overhead Projector 250W

N64 8W

Wii 20W

Xbox One (Gameplay) 110W

Playstation 4 (Gameplay)

137W

Black Light (18 inch) 15W

Mini Strobe Light 25W

1Hp Bounce House Fan 780W

Device Power (W or J/s)

Ninja XL Blender 1000W

Nutri-bullet Blender 600W

Air Popcorn Maker (2min)

1440W

Toaster 1150W

George Foreman Grill 1265W

Electric Griddle 1500W

Microwave 1580W

Keurig Coffee Maker 1500W

Ice Cream Maker 93W

LED TV (50 inch) 100W

LCD TV (50 inch) 150W

Plasma TV (50 inch) 300W

Charging Cell Phone 2 - 6 W

Battery Charging Data (2013)

Ongoing Energy TotalsProposed Energy Need

Energy Stored in Battery

Ice Cream + Music

Fruit Smoothies +

Kickball

Roasting Marshmallows

over Flamtube

Shaved Ice

Time of Pedaling (min)

Weighted Average = 47W

Pow

er G

ener

ated

(W) 97%< 10min79%

2013 (117 Data Points)

Off-the-Grid Day 2011

Bla

ck L

ight

Board

Gam

es

Wii - Just Dance

Student Rock Concert

Off-the-Grid Day 2012

Corn

Hole

Ping Pong

Board Games

Milkshakes

Music + Kickball

Off-the-Grid Day 2013

Apples toApples

Bike Generator Construction

https://sites.google.com/site/debbinkbicyclegenerator/

Bike and Generator Stand

Generator and Diode

A diode prevents the battery from running the generator / motor.

Electronics Board

Audio Capacitor (> 5F)

Cigarette LighterAdapter (12V)

Kill-A-Watt Meter

DC to AC Inverter (400W+)

Multi Meter

Extras...

FEEL the Difference Efficiency Makes!