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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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IntroductionExperimentalMethod
Results andDiscussion
Conclusion
Experimental apparatus:
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IntroductionExperimentalMethod
Results andDiscussion
Conclusion
Experimental setup:
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IntroductionExperimentalMethod
Results andDiscussion
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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IntroductionExperimentalMethod
Results andDiscussion
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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IntroductionExperimentalMethod
Results andDiscussion
Conclusion
Fig 1. Illustration of temperature changes before and after being
mixed with cold water
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IntroductionExperimentalMethod
Results andDiscussion
Conclusion
Fig 2. Illustration of temperature changes before and after being
mixed with aluminum
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IntroductionExperimentalMethod
Results andDiscussion
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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IntroductionExperimentalMethod
Results andDiscussion
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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IntroductionExperimentalMethod
Results andDiscussion
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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IntroductionExperimentalMethod
Results andDiscussion
Conclusion
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Open Question
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-Nothing shocks me, Im a scientist-
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