- #1
Sunfire
- 221
- 4
Hi,
trying to find the error here
compressing ideal gas from p1 to p2 adiabatically means the invested energy in the gas is negative and equal to
E = -αnRT1[(p2/p1)γ-1/γ-1] = -cvm(T2-T1)
If then the gas is allowed to cool down isochorically back to T1, it would lose heat
Q =cvm(T2-T1)
This is equal to the invested energy, therefore in the end the gas is back where it started. Is this correct?
Does this mean if one needs compressed gas at temperature T1, the only way to achieve it is to compress the gas starting at some T3<T1?
Thank you
trying to find the error here
compressing ideal gas from p1 to p2 adiabatically means the invested energy in the gas is negative and equal to
E = -αnRT1[(p2/p1)γ-1/γ-1] = -cvm(T2-T1)
If then the gas is allowed to cool down isochorically back to T1, it would lose heat
Q =cvm(T2-T1)
This is equal to the invested energy, therefore in the end the gas is back where it started. Is this correct?
Does this mean if one needs compressed gas at temperature T1, the only way to achieve it is to compress the gas starting at some T3<T1?
Thank you