i thought there is no way to figure out SH with the info provided or just when evap in equilibrium only.
i did the same calculation but end up with 5 SH. i misread 30.5psig to 35.5 psig=40*. 40psig=45*
i always rely on thermometer and gauge to get SH ans SC reading.
Yes, that was assuming stable operation, and an ideal TXV. Of course no such TXV exists, so this was all correct only on paper.