PASCO ET-8782 Energy Transfer– Thermoelectric - Manual (Page 39)

Model No. ET-8782 Energy Transfer –Thermoelectric
39 ®
ef
ficiency (%)
Carnot ef
ficiency (%)
DT (°C)
Experiment 5:
Teachers’ Notes–
Carnot Efficiency
With the electronic workbook
contained on the CD-ROM,
students will study the efficiency
of the peltier heat engine. They
will record data for
∆T, power
generated and heat flow, calculate
efficiency, and discover the
relationship between efficiency
and
∆T. Finally they will compare
the actual efficiency of the heat
engine to the Carnot efficiency.
Have your students open the
DataStudio file “Carnot Efficiency
Workbook” and follow the on-
screen instructions. As they go
through the electronic workbook
they should take notes and record
their answers to questions on paper.
You can find sample data in the file
“Carnot Efficiency Workbook with
Data”.
Equipment Required Part Number
Thermoelectric circuit board part of ET-8782
Foam insulators (qty. 2) part of ET-8782
Banana patch cords (qty. 5) part of ET-8782
Temperature cables (qty. 2) part of ET-8782
DC Power Supply (10 V, 1 A minimum) SE-9720A or equivalent
PASPORT Voltage/Current Sensor PS-2115
PASPORT Quad Temperature Sensor PS-2143
PASPORT interface(s) PS-2001 or equivalent
DataStudio software See PASCO catalog
“Carnot Efficiency Workbook” file for DataStudio part of ET-8782
Time (s)
Temperature (°C)
Power Generated (mW)