Consider the steam power cycle of example 4.2. As an engineer, you are always interested in improving the efficiency of processes. One approach to improve the efficiency of such a power cycle is to raise the pressure of the boiler, say to P= P = 60 bar. Assuming that the temperature to which the condenser cools the incoming stream is still 373 K, that liquid cannot be present in the turbine, and that vapor cannot be present in the pump, what are the new pressures, temperatures, work produced, and efficiency of the cycle? Are there any potential disadvantages of this "new and improved" design over the original?

70 Chapter 4. Power Generation and Cooling Figure 4.5 Temperature-entropy diagram for Rankine cycle. The hatched area is the 2 phase region for the working fluid