Enthelpy change for Helium liquefaction

Thread starter Testa
Start date Dec 11, 2016
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In summary, Enthalpy change is a measure of the energy absorbed or released during a chemical reaction or physical process. It is calculated by taking the difference between the enthalpy of the products and the enthalpy of the reactants. It is important for Helium liquefaction as it affects the efficiency of the process. Factors that affect enthalpy change for Helium liquefaction include pressure, temperature, and the properties of the Helium gas. Enthalpy change can be controlled during the process by adjusting pressure and temperature, using a pure and cold Helium gas, and implementing proper insulation and heat exchange methods.

Dec 11, 2016

Testa

Why does helium lose enthalpy faster when cooled at a high constant pressure? Thank you.

Last edited: Dec 11, 2016

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Dec 12, 2016

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FAQ: Enthelpy change for Helium liquefaction

1. What is Enthalpy Change?

Enthalpy change is a measure of the energy absorbed or released during a chemical reaction or physical process. It is also known as heat of reaction or heat of formation.

2. How is Enthalpy Change calculated?

Enthalpy change is calculated by taking the difference between the enthalpy of the products and the enthalpy of the reactants. This can be represented by the equation ΔH = H_products - H_reactants.

3. Why is Enthalpy Change important for Helium liquefaction?

Enthalpy change is important for Helium liquefaction because it is a crucial factor in determining the efficiency of the process. Helium has a low boiling point and requires a large amount of energy to be liquefied. Therefore, understanding and optimizing the enthalpy change is essential for efficient liquefaction.

4. What factors affect Enthalpy Change for Helium liquefaction?

The main factors that affect enthalpy change for Helium liquefaction include the pressure and temperature of the system, as well as the specific properties of the Helium gas being used, such as its purity and initial temperature.

5. How can Enthalpy Change be controlled during Helium liquefaction?

Enthalpy change can be controlled during Helium liquefaction by adjusting the pressure and temperature of the system, as well as using a pure and cold helium gas as the starting material. Additionally, proper insulation and heat exchange methods can also help to control and optimize the enthalpy change during the process.