ES 1000 – Orientation to Engineering
Fall 2014
Engineering Design Challenge
Results Form
Team Name _________________________
Collected Data
Time (minutes)
0
5
10
15
20
25
30
Team Members ____________________________
Artificial Light
Temperature (oF)
Sunlight
Temperature (oF)
Reflective area (in2) _________
Thermal heat capacity of liquid
water (Btu/lb-oF) ___________
Density of liquid water (lb/ft3)
_____________
Design notebook (Y/N) ______
Temperature vs Time
T
e
m
p
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
5
10
15
20
25
30
Time, min
Produce graphs of ∆𝑇 versus time and draw the best straight line through the individual data
points for both the artificial light source and the sunlight source.
For the artificial light source only, compute the following values:
“Efficiency” of the design as defined by the equation,
𝐸=
∆𝑇 (𝑎𝑡 30 𝑚𝑖𝑛𝑢𝑡𝑒𝑠) o
. ( F/in2)
𝐴
____________________
Weight of water: 8 US ounces * 0.0010444 ft3/US ounce * ______ lb/ft3 = _______ lb
The amount of energy absorbed by the water:
∆𝐻 = 𝑊 ∗ 𝑐𝑝 ∗ ∆𝑇 = _______ lb * _______ Btu/lb-oF * ______ oF = _______ Btu