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  1. flow processes
  2. non-flow processes
  3. adiabatic processes
  4. None of the above
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1 Answers

Option 1 : flow processes

Explanation:

Flow process:

  • The processes occurring in the open system which permit the transfer of mass to and from the system are known as the Flow process.
  • Flow work is the amount of work that is required to displace an infinitely small fluid element to flow into or out of the control volume.

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  • Control mass is known as a closed system and control volume is known as an open system.
  • The boundary of the control volume is known as a control surface.

Non-Flow Processes

These are compression and expansion processes on gases in a cylinder with complete leakproof. In these, there is only energy transfer with zero mass transfer.

These nonflow processes can be the followings:

  • constant pressure process
  • constant volume process
  • constant temperature process
  • reversible adiabatic process
  • poly-tropic process
  • constant internal energy process

Adiabatic Process:

  • Adiabatic process: When a thermodynamic system undergoes a change in such a way that no exchange of heat takes place between Systems and surroundings, the process is known as an adiabatic process.
  • During the adiabatic process, no exchange of heat takes place between the system and the surroundings. i.e. ΔQ = 0.
  • Change in pressure (P), volume (V), and temperature (T) takes place.
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