Professor:
Senthil Chandrasegaran
Karthik Ramani
Devarajan Ramanujan
Andrew Szykula
April 27th, 2010
Charles Weaver

Idea selected! Power generating door.
871 US gallons of
gasoline per person
Total US Residential and Commercial Energy Consumption: Over 19
Quadrillion BTU (Lawrence Livermore National Laboratory,2006 )
• No existing patents found for our product.
• The crank light and revolving door were the closest matches.
Crank Light
Revolving Door
Source:
Fluxxlab
Generate
Electricity
Generate
electricity from
door movement
Harness door
movement energy
Convert door
movement energy
to electrical energy
Generate
Eco-awareness
Gather
information
Transmit Energy
Display
information
Store Energy
Supply Energy
Import
electrical energy
Import
electrical energy
Import
stored energy
Attach to door
Measure
energy
generated
Display
energy
accumulated
Convert energy to
transmittable form
Convert energy to
storable form
Convert energy to
usable form
Attach to frame
Convert into
operable form
Display
eco-branding
Minimize
transmission
losses
Minimize
storage losses
Minimize
supply losses
Attach to ground
Design Decision: Placement?
Top Top
Bottom
Bottom

Design Decision: Import relative motion?
Levers
Spool
Gears

Design Decision: Where will the energy go?
Store in battery
Send to grid
Send to local device
Dynamo
Flywheel
Gearing Mechanism
Casing
Mounting plate



Mounting plate screws
into door
Cover snaps to
baseplate
Unit slides into
mounting plate
Baseplate
Cover
Baseplate
Mounting Plate
Baseplate snaps
connect to cover
Baseplate teeth connect to mounting plate teeth


Schmidt Original
Dynamo – Chosen for
power generation at
low RPMS and high
efficiency
Flywheel steadies shaft
rotation


Baseplate brackets
position gearing
mechanism
Overrunning clutch
design allows power
generation when door
opens or closes.
Flywheel rotates in same direction regardless of opening or closing
Procurement Material Manufacturing Total
Cost ($)
Cost ($)
Cost ($)
Cost ($)
Part
Qty
Dynamo
1
10
10
Wheels
2
2.25
2.25
Shafts
3
0.45
0.15
0.6
Flywheel
1
1.05
1.05
Bevel Gears
3
1.5
1.5
Overruning Clutch 3
4.75
4.75
Casing and Cover 1
0.192
0.1
0.292
Mounting Plate
1
0.176
0.075
0.251
Fastners
8
0.8
0.8
Wires
2
0.35
0.35
LED Lamp
1
1.35
1.35
Total Estimated
23.19
Cost
Power (W)

Inputs for power simulation:
◦ Door Open Distance
◦ Time to Open
◦ Time to Close
Parameters:
◦ Normal distributions
◦ Monte Carlo simulation
Power Generated vs. Dynamo Speed
6
4
2
0
0
1
2
3
Speed (rps)
Power Simulation
Power Generated
RMS Power
8
Power Generated (Watts)

7
6
5
4
3
2
0
200
400
600
Nth Simulation run
800
1000
4
5
6

35W Fluorescent Lamp (Always on)
23.52 KiloWatt Hours ( In one month)
$1.94 a month in electricity consumption
Return on Investment – 18 months

Can replace the infrared trigger



Source: