Mechanical Engineering - Thermodynamics - Discussion

1. Hyperbolic Process- it is the process where the gas is heated or expanded in such a way that the product of its pressure and volume remains constant. This process is governed by Boyle's law.

Mathematically, p * v = constant

2. Isothermal Process- it is the process in which the temperature of the working substance remains constant during expansion or compression. In an isothermal process, there is no change in temperature and internal energy.

It may be noted that the hyperbolic process is governed by Boyle, s law i.e. p we = constant. If we plot a graph of pressure and volume, during the process as shown in fig we shall get a rectangular hyperbola. Hence, this process is termed as a hyperbolic process. It is merely a theoretical case and has a little importance from the subject point of view. Its practical application is an isothermal process.

Yes @Anil.

It's because Hyperbolic process: A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called a hyperbolic process. This process is governed by Boyle's law.

In the gas law, PV = mRT, for a given gas m and are constant. The product of P and V is constant when T is constant. Thus isothermal process (for gas only) is the correct answer.

It is not known why the answer was given is B (ie. NO).

In gas PV = constant. It is an isothermal process and in steam, PV = constant in the wet region is a hyperbolic process and superheated state is the isothermal process. Therefore right answer is "A".

In general gas equation is pv=mRt.

According to question, pv=constant and at last of question told isothermal process so Temp. Also constant. So, I think the Correct Answer is A not B.

I think the isothermal process is the right answer. But If hyperbolic process are available then then we choose hyprobalic process right.

They should explain the state of the medium, if it is gas then it will be isothermal and if it is vapor then it is hyperbolic.

Process is given as heated that means there will be change in temperature. So it must be hyperbolic process.

In an isothermal process, the product of pressure and volume is constant, hence correct option is yes.