Quick update: After swithching the cap length a little...
Idle: -44c load block.
50w: -42c load block.
100w: -36c load block.
150w: -30c load block
200w: -23c load block
250w: -18c load block.
One thing is extremely clear from the pattern... it is handling load in very linear fashion. Which is what I would like to see.
No flood back on this situation as well as first test. Superheat is tad lower now that it is behaving more like it should. I am wondering about effect of over suction heat exchange at the moment as it is definitely putting more strain on compressor and condenser than I think it should. Around 250w is the max I would tune my system for using the current condenser (which is incredible to begin with but proper tuning dictates that I need even bigger condenser beyond this point). Desuperheater is viable option for another 20-30w but I rather not risk few undesirable effect... besides, can't imagine benefitting more than 250w on actual CPU with temp drop vs voltage increase (just like I used to tune for best temp around 180w in time of X2s, and 200w if requested).
Cascades, I can see the need for 300w capacity which can't really easily be reproduced from single stage as gas utilized is vastly different... maybe one of them is in target for my next cascade build which is planned up.
One thing I would like to really see in this evap actually is the size reduction if possible on diameter while increase in height with chamber depth. Total inner volume greater than what it is now, total mass being greater as well without adding too much height on bottom plate part of it. Instead of keep increasing bottom plate, I believe thermal inertia can be obtained by higher wall height to add in the mass. Another thing I would like to see has already been personally mentioned to Ron and Goss, so that could be viable option if it IS practical for production process in brazing.
I wonder how newer revision (believe I am playing with Rev.1) works like...
I might have to change my production with NEK on this evap while leaving other line of NF series with previous evap. Evap works wonderfully with some characteristics of NEK compressor I didn't quite like too much and makes strong combination that NF compressor probably won't be able to touch.