I'm trying to get a good understanding of the two images attached. So when calculating the coefficient of performance, I will need to use qL/wc. This is something that I've read in my textbook. Now when I was working with another student on this he told me that the work of the compressor will change due to qH? I'm not sure what he's talking about, and I think he just copied someone's work. And I thought that qH was to be calculated from: qH = h2 - h1. Is this not correct? Can someone help me understand what is going on here?