PASCO ET-8782 Energy Transfer– Thermoelectric - Manual (Page 22)

Energy Transfer –Thermoelectric Load Resistance and Efficiency
22 ®
3. Predict how your results would differ if you repeated your analysis for a different value of
∆T? Test your prediction.
4. For your graph of Power vs. Load Resistance, what did you do to ensure that only R
L
and P
varied, and that all other experimental parameters stayed constant? Evaluate how successful
these measures were. Discuss how you could improve them.
5. In the analysis we assumed that V
out
was constant for all values of
∆T = 30 °C. Do an
experiment to test that assumption.
6. For any given output load, quantitatively describe the relationship between P and
∆T.