The discussion revolves around the feasibility of a closed, adiabatic device that claims to generate useful work by expanding steam from high temperature and pressure to lower temperature and pressure. The focus includes theoretical implications of adiabatic processes and the behavior of steam as a real fluid according to steam tables.
The discussion does not reach a consensus on the feasibility of the device. Multiple viewpoints are presented regarding the implications of adiabatic processes and entropy changes.
Participants reference steam tables and the concept of entropy without resolving the implications of these references on the feasibility of the device. There are assumptions about the behavior of steam as a real fluid that are not explicitly stated.
Nah346 said:"Adiabatic" indicates that there is No change in entropy due to heat transfer. Therefore that would eliminate the (SQ/T) and leave us with (S2-S2 = Sgen)