Physics Lab Equipment

LETI-10 Specific Heat Ratio of Air

LETI-10 Specific Heat Ratio of Air

Features

  • High performance

  • Simple structure, stable and reliable

  • Affordable






Introduction


The specific heat ratio (also known as the adiabatic index) of air is a fundamental thermodynamic property widely studied in general physics courses. Traditionally, determining this ratio required the use of manual methods such as open U-shaped manometers and mercury thermometers to measure gas pressure and temperature. However, modern advancements in sensor technology have allowed for more precise and efficient measurement techniques. 


The LETI-10 Apparatus for measuring the specific heat ratio of air leverages advanced diffused Silicon pressure sensors and integrated temperature sensors, providing higher accuracy and sensitivity in measurements. The apparatus allows students to observe clear thermodynamic phenomena with an experimental error of less than 3% when compared to standard values, making it an ideal tool for both learning and practical application in the study of thermodynamics.


The LETI-10 Apparatus enables the following experiments:

1. Measure the Specific Heat Capacity Ratio of Air:

   Students can perform experiments to measure the specific heat capacity ratio of air at both constant volume and constant pressure. These measurements are fundamental for understanding thermodynamic processes and the behavior of gases in various physical systems.

2. Observe Thermodynamic Processes of Air:

   Through controlled experiments, students can explore the thermodynamic processes of air, examining how temperature and pressure change under different conditions, and understanding key concepts like adiabatic expansion and compression.

3. Measure Gas Pressure and Temperature:

   Learn how to measure gas pressure and temperature accurately using the integrated sensors. Students will gain hands-on experience with modern measurement tools, improving their understanding of sensor technology in practical thermodynamics.


The LETI-10 Apparatus offers valuable learning opportunities, enabling students to: gain a solid understanding of the specific heat ratio and its significance in thermodynamics; learn the principles of gas pressure and temperature measurement using advanced Silicon sensors; conduct experiments to observe and understand real-world thermodynamic processes, and gain insight into the role of the specific heat ratio in determining the behavior of gases in both theoretical and practical contexts.


The instruction manual includes detailed experimental configurations and step-by-step setup instructions, clear guidance for performing each experiment and understanding the results, explanations of the principles behind the specific heat ratio, thermodynamic processes, and sensor technology, and example results to help students interpret data and gain deeper insights into thermodynamic concepts.


For a deeper understanding of the specific heat ratio of air, thermodynamics, and the application of Silicon pressure sensors, refer to the Experiment Theory and Contents. The LETI-10 Apparatus is an essential tool for studying the fundamental principles of thermodynamics in a modern physics curriculum.


Key Specifications

DescriptionSpecifications
Digital voltmeter3-1/2 digits: pressure measurement; 4-1/2 digits: temperature measurement
Pressure sensordiffused Silicon; range: 0-10 kPa; sensitivity: 20 mV/kPa
Temperature sensorsensitivity: 1 µA/℃


Part List

DescriptionQty
Electric Unit1
Rubber Inflation Ball with Tube1
Glass Bottle with Sensors & Wires1
Multifunction Barometer/Thermometer1
Manual1

  LETI-10 Air Specific Heat Ratio.png

1. Inlet Valve

2. Outlet Valve

3. Sealant

4. Pressure Sensor

5. Temperature Sensor


Schematic of system


 LETI-10 Air Specific Heat Ratio.png

Experimental process

(Click figure to enlarge)

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