Water is the working fluid in an ideal rankine cycle with reheat. superheated vapor enters the turbine at 12 mpa, 480°c, and the condenser pressure is 8 kpa. steam expands through the first-stage turbine to 1.2 mpa and then is reheated to 480°c. assume the pump and each turbine stage has an isentropic efficiency of 85% and 92%, respectively. determine the thermal efficiency.

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?