e then recorded the initial micrometer gauge reading and inserted a thermometer into the exchanger to get the initial temperature reading. Once the exchanger was ready, we connected the steam generator to the apparatus using rubber tubes and applying weights on the generator to allow minimal leakage of steam.

Figure [8]. Steam Generator Attached to Heat Exchange

Attached to the other end of the apparatus, another hose was led into the sink to allow drainage. On average, the groups waited several minutes for the steam to fully heat up each rod until it was stabilized. The final temperatures were recorded, and we were able to record the change in length based off the change in the micrometer (in mm).

Figure [9]. Overview of Fully Set Up Experiment

Following the final readings, the hose attached to the steam generator was pulled off and attached to a faucet. This allowed for cold water to flow through the apparatus and cool the rods which were returned to their initial lengths. This process was repeated for all rods until sufficient data was collected.

Figure [10]. Heat Exchanger Attached to Faucet to Cool Rod

Results and Discussion

Following the conclusion of our experiment, all the groups came together to discuss their results and compare what they found out about their given materials. The following table below will show all of the groups recorded data from the investigation including each metals coefficient of linear expansion.

Group Metal Ti (℃) Tf (℃) Li (m) △L (m) ⍺