Skip to main content
Physics

Return to Question

added 10 characters in body
Source Link
Roger V.
Roger V.
  • 65k
  • 7
  • 69
  • 215

In an adiabatic irreversible compression process, suppose the pressure P(ext)$P_{ext}$ compresses the piston and does some work say 50J.  (50J of energy is lost by surrounding). Since the pressure P(int)$P_{int}$ is less than the P(ext)$P_{ext}$, the work done by system on surrounding will be -20J(suppose). Negative sign shows that 20J of energy is lost my surrounding. But initially we saw that surrounding lost 50J! How to tackle this discrepancy? I am very confused.

In an adiabatic irreversible compression process, suppose the pressure P(ext) compresses the piston and does some work say 50J.(50J of energy is lost by surrounding). Since the pressure P(int) is less than the P(ext), the work done by system on surrounding will be -20J(suppose). Negative sign shows that 20J of energy is lost my surrounding. But initially we saw that surrounding lost 50J! How to tackle this discrepancy? I am very confused.

In an adiabatic irreversible compression process, suppose the pressure $P_{ext}$ compresses the piston and does some work say 50J.  (50J of energy is lost by surrounding). Since the pressure $P_{int}$ is less than the $P_{ext}$, the work done by system on surrounding will be -20J(suppose). Negative sign shows that 20J of energy is lost my surrounding. But initially we saw that surrounding lost 50J! How to tackle this discrepancy? I am very confused.

Source Link
Nikhil Negi
Nikhil Negi
  • 154
  • 7

Work done on system and surroundings in an irreversible adiabatic compression

In an adiabatic irreversible compression process, suppose the pressure P(ext) compresses the piston and does some work say 50J.(50J of energy is lost by surrounding). Since the pressure P(int) is less than the P(ext), the work done by system on surrounding will be -20J(suppose). Negative sign shows that 20J of energy is lost my surrounding. But initially we saw that surrounding lost 50J! How to tackle this discrepancy? I am very confused.