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Related Experiment Videos

A small volume thermodynamic system for B/A measurement.

J Zhang1, F Dunn

  • 1Department of Electrical and Computer Engineering, University of Illinois, Urbana-Champaign 61801.

The Journal of the Acoustical Society of America
|January 1, 1991
PubMed
Summary

A new thermodynamic method accurately determines the B/A value using ultrasonic velocity measurements during rapid pressure changes. This technique requires only small sample volumes and achieves a measurement error below 0.7%.

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Area of Science:

  • Thermodynamics
  • Acoustics
  • Physical Chemistry

Background:

  • The B/A value is a crucial thermodynamic parameter.
  • Accurate measurement of thermodynamic properties is essential for material characterization.
  • Existing methods may require larger sample volumes or more complex procedures.

Purpose of the Study:

  • To describe a novel thermodynamic method for determining the B/A value.
  • To enable B/A value determination using small sample volumes (4-ml).
  • To achieve high accuracy in B/A measurements.

Main Methods:

  • Utilizes a thermodynamic approach.
  • Involves rapid alteration of static sample pressure to approximate an adiabatic process.
  • Measures ultrasonic velocity during the pressure change.

Related Experiment Videos

  • Calculates the B/A value from the measured velocity change.

    • Main Results:

    • Successfully determines the B/A value for small sample volumes.
    • Achieves a measurement error of less than 0.7% for the B/A value.
    • The method is based on ultrasonic velocity changes under adiabatic conditions.

    Conclusions:

    • The described thermodynamic method offers an accurate and efficient way to determine the B/A value.
    • The technique is suitable for samples as small as 4-ml.
    • This method provides a reliable tool for thermodynamic property assessment.