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7/31/2019 Presentasi Scicom

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The Influence of Thermal Conductivity

on Heat Absorption

Aziz Zulnesar Rasyid

Department of Physics, Faculty of Mathematics and Natural Sciences

Bandung Institute of Technology


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Outline

Introductiona. What is heat?

b. Heat transfer

c. Specific heat

d. Experiment purposeExperimental Method

a. Experimental apparatus

b. Experimental setup and procedure

Results and Discussiona. Results

b. Analysis

Conclusion

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IntroductionExperimentalMethod

Results andDiscussion

Conclusion

Experiment purposeThe purpose of this experiment is to understand the relationbetween thermal conductivity and heat absorption.


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Conclusion

Experimental apparatus:


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Conclusion

Experimental setup:


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Conclusion

Experimental procedure:

Experiment 1:

Measuring 200mL of distilled water using a measuring cup andput the water into empty vessel and labeled A.

Measuring 200mL of distilled water using a measuring cup and

put the water into calorimeter. Measuring the temperature of water in A vessel using

thermometer.

We turn on DC voltage to heat the distilled water in calorimeteruntil the temperature of water reach 70C. The temperaturechange can we see from vernier logger pro software oncomputer.

We turn off DC voltage and we put the water from A vessel intocalorimeter.

We stir the mixture until the temperature both of systems isconstant.


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Conclusion

Experimental procedure:

Experiment 2:

Weighing pieces of aluminum using technical balance and putaluminum into empty vessel and labeled B.

Measuring 200mL of distilled water using a measuring cup and

put the water into calorimeter. Measuring the temperature of aluminum in B vessel using

thermometer.

We turn on DC voltage to heat the distilled water in calorimeteruntil the temperature of water reach 70C. The temperaturechange can we see from vernier logger pro software oncomputer.

We turn off DC voltage and we put aluminum from A vessel intocalorimeter.

We stir the mixture until the temperature both of systems isconstant.


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Conclusion

Fig 1. Illustration of temperature changes before and after being

mixed with cold water


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Conclusion

Fig 2. Illustration of temperature changes before and after being

mixed with aluminum


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Conclusion

First Experiment Second Experiment

Equation: y= 0.2x -43.6

Gradient: 0.2

Equation: y= 0.5x -164

Gradient: 0.5


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Conclusion

Heat

Molecules movefaster (themolecule has akinetic energy)

Striking anothermolecule that isnext to it

Because ofcrushing, the othermolecules movefaster

This situation

occurs until allmolecules havethe same energy


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Conclusion

Structure of an atom

Water Aluminum

Reference:

Density: 0.99704 gram/cm3

Thermal conductivity: 0.609 W/m K

Specific heat: 4200 J/kg K

Reference:

Density: 2.70 gram/cm3

Thermal conductivity: 237 W/m K

Specific heat: 908 J/kg K

Source: Faber, P.; Garby, L. (1995). "Fat content affects heat capacity: a study in mice". Acta

Physiologica Scandinavica 153 (2): 1857.


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The distance was much closer among molecules, thermal

conductivity would increase and heat which was neededwould be smaller.

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Conclusion


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Open Question

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-Nothing shocks me, Im a scientist-

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