Attached is the peer reviewed paper these diagrams come from. https://files.engineering.com/getfile.aspx?folder=5e54378c-b6d9-4931-a59d-61c7d1ed6642&file=Project2_ExergyAnalysis_PowerPlants.pdf
I am super lost here. I keep getting 26% thermal efficiency using first law analysis and cannot figure out what I am doing wrong. The paper I am using to help solve this problem is Teaching Power cycles by comparative first-amd-second-law analysis of their evolution by Dunbar et al.
Thanks in...