MAE 334 Lab 3 In the Discussion of Results indicate how successful you were in meeting the Objectives. For the two minute heating runs – are the thermal energy increase and work level in agreement? For the two minute cooling runs is the convective heat loss really “small”? Does your time constant and first order model reasonably represent the process cool down? How do your calculated convection factors H compare? Do you think your full simulation of the 125 rpm temperature rise is reasonable? How long would you have to crank to reach the expected final temperature? Would the temperature be high enough to damage any parts of the apparatus? Specific Questions 1. Given the resistance – temperature data shown on each of the calorimeters for the thermistors, determine a calibration curve in Excel for temperature vs. voltage. Of course, use our simple series circuit with the 100 k Ω resistor and the 5 volt supply. Use a trend line to obtain a linear calibration equation and compare your
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