1. LAB 01
HEAT & MASS TRANSFER LAB 1
Experiment no. 01
Objective:
Determination of thermal conductivity of different metal samples.
Apparatus:
The apparatus shown in Fig. 1, consists on an input heat section, several central sections of
metallic material with different thermal conductivities and a refrigeration section. The input
heat section is provided of a cylindrical metal bar for the realization of a series of experiments
of heat transfer. While the other one consists of two different disks (diameter = 25 mm) that
allows studying the influence of the heat transfer in different metals. These sections are
provided with a number of temperature sensors included with the unit. To maintain the
temperature gradient constant, a water cooling circuit, whose flow rate can be measured with
a sensor, has been included on one side of the model.
Fig. 1 Metal to Metal Heat Transfer Module
1. Heating Element 2. Test metal Specimens
3. Cooling System 4. Temperature sensors
2. LAB 01
HEAT & MASS TRANSFER LAB 2
Experimental Procedure:
1) Place two of the test sections in the intermediate area.
2) Ensure that all the temperature sensors and heating element have been connected.
3) Make a water flow circulate through cooling system with SC-2 at 2 l/min.
4) Set the voltage of heating resistor to 10W with the power controller.
5) Wait until the temperature reading on the sensor becomes stable.
6) Repeat the previous steps for different heating powers i-e 15, 20, 30, 50W.
7) Exchange the position of test sections and repeat the experiment.
8) Use Fourier’s Law, calculate the thermal conductivity by keeping the distance
between temperature sensors is 10mm.
Observations and Calculations:
Specimen 01: Copper
Parameters T1 T2 T3 T4
Sensors Temperature 37.7 29.8 36.6 32
x 0.01 0.02 0.03 0.04
Q 20watt
Diameter 25mm
Area .00049m2
∆T/∆x - 103K/m
k 394W/mK
