Refrigeration & Heat Pumps
Reverse Heat Cycle
Taking heat out of cold system and adding to a hot system
Opposes natural heat flow - requires outside work
Hot Reservoir @ TH
Rankine Cycle Example 1
Steam is generated in a power plant @ 90 bar and 400C enters a
turbine. The turbine exhaust is at 4 bar. Assume the turbine and
pump both operate at 80% efficiency.
A.) What is Qboil, Qcond, Wturb, and Wpump?
Gibbs Free Energy for Multi-Component Systems
Gibbs Free Energy & its FPR can be extended to mixtures
dG = VdP SdT
dG = V dP S dT
d(nG) = (nV)dP (nS)dT
However, we should expect that nG = Gt should