thermoelectrics - JoeDoyle LabReportforThermoelectricity...

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Joe Doyle Lab Report for Thermoelectricity Part A Non-insulated (At 3 Amps) Insulated (At 3 Amps) It is clear that adding the foam insulation allows for maximum cooling of the metal  device.  It can be noted from the data above that the metal reached 4*C cooler than when  uninsulated.  By inserting the foam, we are able to effectively block the ambient temperature  (22.78*C) from heating up the metal device.  In general, thermal equilibrium was assumed when  the temperature would not change more than .2*C over a period of 1-2 minutes. Tc(*C) Tr(*C) To(*C) ∆T(*C) 0 26.87 22.78 26.78 Tc(*C) Tr(*C) To(*C) ∆T(*C) -4 26.38 22.78 30.38
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Part B Cooling: Tc(* C) Tr(*C ) To(*C ) ∆T(* C) Tr- To(*C ) I(A) Vm(*C ) 12.8 23.14 22.78 10.34 0.36 0.5 1.76 7.2 23.41 22.78 16.21 0.63 1 3.26 3.71 23.74 22.78 20.03 0.96 1.5 4.63 1.86 24.77 22.78 22.91 1.99 2 6.01 0 25.34 22.78 25.34 2.56 2.5 7.38 -1 26.87 22.78 27.87 4.09 3 8.57
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   Heating: Tc(*C) Tr(*C) To(*C) ∆T(*C) Tr-To(*C) I(A) Vm(*C) 58 25.6 22.78 32.4 2.82 -1.51 -6.02
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From this data it is apparent that as current increases, Tc decreases in a fairly linear  fashion.  It is also clear that Tc>Tr when heating and Tc<Tr when cooling.  In order to determine 
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thermoelectrics - JoeDoyle LabReportforThermoelectricity...

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