What is enthalpy and how does it relate to a throttling process?

In throttling process enthalpy remains constant ,work done is 0. Throttling process : The process in which a high pressure fluid is converted to low pressure by using a throttle valve is Throttling . In throttling process enthalpy remains constant ,work done is 0.

What happens during throttling process?

Throttling is a process where a high-pressure fluid is converted into low-pressure by using a throttle valve. In a throttling process, the enthalpy remains constant and the work done is zero.

What is constant in a throttling process?

A throttling process is a thermodynamic process in which the enthalpy of the gas or medium remains constant (h = const).

What is the change in entropy when?

Entropy also increases when solid reactants form liquid products. Entropy increases when a substance is broken up into multiple parts. The process of dissolving increases entropy because the solute particles become separated from one another when a solution is formed. Entropy increases as temperature increases.

How does enthalpy change before and after throttling?

A throttling process is defined as a process in which there is no change in enthalpy from state one to state two, h1 = h2; no work is done, W = 0; and the process is adiabatic, Q = 0. Finally, the theory states that an ideal throttling process is adiabatic.

Why Does entropy increase in throttling?

Because of the viscous heat generation in the throttling operation, the temperature change is small, and so the decrease in pressure (increase in volume) will result in an increase in entropy.

Which change results in an increase in entropy?

When a substance goes from a solid to a gas (sublimation) or from a liquid to a gas (evaporation), entropy increases. Likewise, when a solid dissolves in water, entropy increases.

Does enthalpy change in a throttling?

What is entropy change in physics?

Entropy is the loss of energy available to do work. Another form of the second law of thermodynamics states that the total entropy of a system either increases or remains constant; it never decreases. Entropy is zero in a reversible process; it increases in an irreversible process.