PASCO ET-8782 Energy Transfer– Thermoelectric - Manual (Page 37)

Model No. ET-8782 Energy Transfer –Thermoelectric
37 ®
Experiment 4:
Teachers’ Notes–
Coefficient of Performance
Refrigerator
This sample data is in the file “Coeff of Performance Data Refrig”.
1)
2) This coefficient of performance is similar to that of real heat pumps.
3) An air conditioner pumps heat out of the building and into the outside air.
4) The peltier represents the heat pump, the cold block represents the interior of the building,
and the hot block represents the outside air.
5) You would choose an air conditioner with a high coefficient of performance because it would
use less energy to remove heat from the building (and cost less to run).
k
76.0 J
47.8 J
-------------- 1.59 = =