Is a Fully Adiabatic Process Truly Possible?

In summary, an adiabatic process is a thermodynamic process in which there is no heat transfer. However, it is important to understand that in reality, nothing is completely frictionless and there will always be some heat transfer. It is possible to model certain processes as adiabatic, either by insulating them from heat transfer or by happening quickly enough that heat does not have time to influence the process. Understanding when an adiabatic process can be accurately modeled is crucial in simplifying calculations and creating correct models.
  • #1
moust
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fully adiabatic process?

:confused: by definition i know that adiabatic process is a thermodynamic process in which there is no heat transfer and it the same time i also know that nothing is frictionless even though we sometimes assume thing to be. so therefore there will be always heat transfer but i am not still sure if i am wright and was wondering if it possible to have a process which is fully adiabatic??
 
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  • #2
I think the important thing to learn is not how a process might not be perfectly adiabatic (or isothermal). The important thing to understand is what processes you can model using the assumption that the process is adiabatic. If you look at this from the perspective that you want to model an actual process, and you want to make simplifying assumtions such that you can calculate such things as fluid states, then you have to understand when you can model such a process as being adiabatic in order to simplify it sufficiently to create the correct model.

There are two general classes of adiabatic processes that I can think of.
1. A process that is insulated such that there is insignificant heat transfer.
2. A process that happens so quickly that heat has little or no time to influence what happens.

What processes can you think of that might fit those two catagories?
 
  • #3


Yes, it is possible to have a process that is fully adiabatic. This means that there is no heat transfer at all during the process. While it is true that nothing is completely frictionless, the term "adiabatic" refers specifically to heat transfer and not friction. In a fully adiabatic process, all forms of heat transfer, including conduction, convection, and radiation, are prevented or minimized. This can be achieved through the use of insulating materials or by designing a system in such a way that heat transfer is negligible. Fully adiabatic processes are often used in thermodynamics to simplify calculations and analysis.
 

1. What is a fully adiabatic process?

A fully adiabatic process is a thermodynamic process in which no heat is transferred to or from the system. This means that the system is completely insulated and there is no exchange of thermal energy with the surroundings.

2. How is a fully adiabatic process different from an isothermal process?

In an isothermal process, the temperature of the system remains constant throughout, while in a fully adiabatic process, the temperature can change due to internal energy changes. However, both processes involve no heat transfer.

3. What are some examples of fully adiabatic processes?

Some examples include a gas expanding rapidly in a perfectly insulated container, a chemical reaction occurring in a vacuum, and a perfectly insulated cup of hot coffee cooling down.

4. Is a fully adiabatic process reversible?

In theory, a fully adiabatic process can be reversible if it occurs slowly enough to maintain equilibrium. However, in practice, it is difficult to achieve a fully reversible process.

5. How is the first law of thermodynamics applied to a fully adiabatic process?

The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. In a fully adiabatic process, there is no heat transfer, so the change in internal energy is equal to the work done by the system.

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