Lab Report

Conduction in Solids

Figure 1.1- Taken from http://www.mansfieldct.org/schools/mms/staff/hand/Image124.gif

Unit Ops Lab

Table of Contents:

1.) Lab Objectives pg. 3

2.) Description of Equipment Used pg. 3

3.) Experimental Procedure pg. 4

4.) Data Collected pg. 4-5

5.) Experimental Findings pg. 5-6

6.) Discussion of Results and Conclusion pg. 6

1.) Lab Objectives

In this lab, the group experimented with conductive heat transfer in solids exposed to two different environments. The time was measured that it took two different cylinders to reach equilibrium in a cold water and an ambient water environment. From this, the students demonstrated how the driving force for heat transfer diminishes as the solid reaches equilibrium.

This experiment should leave the group with a practical idea of the heat transfer mechanics that affect their everyday lives. Application may range from complex engineering solutions down to the way our favorite beverages are cooled to make them even tastier!

2.) Description of Equipment Used

Cylinders-

Two different cylinders, one brass and one stainless steel, were used in the experiment. They are solid with the exception of a hole that allows a thermocouple to be inserted through the top. Each is 2” diameter and approximately a foot long. For each trial, the cylinder was placed in the bottom of the water bath

Water Baths-

Two five gallon buckets contained the hot and cold water baths. The first bucket was filled with full of ice and water to ensure a mixture at approximately zero Celsius. The second was filled with tap water at ambient temperatures. Once finished the stopcock on the bottom of each bucket was opened and drained into the floor drain through.

Thermocouples-

A thermocouple with its digital readout provided the system temperature at each time interval. This temperature was recorded in 30 second intervals until the system had appeared to reach equilibrium. As stated above,...