Quasi-equilibrium process : can be viewed as a sufficiently slow process that allows the system to adjust itself internally and remains infinitesimally close to an equilibrium state at all times.
What is a process during which the temperature remains constant?
An isothermal process is a change of a thermodynamic system, in which the temperature remains constant.
What is the quasi-equilibrium process?
A quasi-equilibrium process is one in which the system remains very nearly at equilibrium at all times during the process . The process can be represented by a line on a P-V or T-S diagram, which makes the process much simpler to visualize and to analyze.
What is quasi-static process explain?
In thermodynamics, a quasi-static process (also known as a quasi-equilibrium process. From the Latin quasi, meaning ‘as if'), is a thermodynamic process that happens slowly enough for the system to remain in internal thermodynamic equilibrium . ... The theoretical term ‘reversible process' is sometimes used.
What is meant by reversible process?
A reversible process is defined as a process in which the system and surroundings can be returned to the original conditions from the final state without producing any changes in the thermodynamics properties of the universe, if the process is reversed.
What is quasi equilibrium process importance in engineering?
: When a process proceeds in such a manner that the system remains infinitesimally close to an equilibrium state at all times . That can be viewed as a sufficiently slow process that allows the system to adjust itself internally.
What is equilibrium process?
A state of equilibrium exists in a process when the rate of the forward process equals the rate of the reverse process . The equilibrium condition exists in relation to thermal, mechanical, and chemical changes. ... A state of thermal equilibrium exists when the heat loss of a system is equal to the heat gain.
What is constant temperature process diagram?
A curve in a P-V diagram generated by the equation PV = const is called an isotherm. For an isothermal, reversible process, the work done by the gas is equal to the area under the relevant pressure -volume isotherm.
Which of the following is wrong in an isothermal process?
In isothermal process, heat enters or leaves the system, to keep the temperature constant , so statement (c) is wrong.
What is constant temperature pressure?
The pressure of a gas is inversely proportional to its volume when temperature is constant. The product of pressure and volume is constant when temperature is constant. This relationship is known as Boyle's law or Mariotte's law . A constant temperature process is said to be isothermal .
Why quasi-static process is important?
This is crucial in order to have well-defined state variables such as the temperature or the pressure of the system, which are defined only for systems in equilibrium. Thus, if one pretends to track the value of these variables as one progresses along a thermodynamic process , the process needs to be quasi static.
Is adiabatic process quasi static?
Adiabatic: A process in which there is no energy exchanged by heating. An adiabatic quasistatic process is isentropic (by the definition of entropy), and we often use the two words interchangeably (because we usually consider quasistatic processes). Chemists may tell you that an adiabatic process is fast.
Why reversible processes are quasi static?
A process, carried out in a stepwise manner, becomes quasi-static when the number of intermediate steps tends to infinity . Usually, the net entropy production approaches zero under this limiting condition. Hence, such cases are termed reversible.
Which is irreversible process?
Irreversible processes are actual processes carried out in finite time with real substances . ... In irreversible processes, heat transfer occurs through a finite temperature difference. • In irreversible processes, mass transfer occurs through a finite chemical potential difference.
Which of the following is irreversible process?
Water at −4∘C temperature will be in the solid state only. It can only convert to a liquid state in high temperature or even the standard room temperature. Hence, the given example is an irreversible process. So, the correct answer is Option A,C,D.
What is irreversible process example?
Examples of Irreversible Processes
Throttling . Heat transfer . Diffusion . Electricity flow through a resistance .
