Hello all,

I am new to the forum but not a refrigeration tech or engineer. I need assistance developing a liquid chiller for a medical application. I am using an off the shelf system that needs to be modified for the application. Refrigeration lines need to be modified and a custom evaporator needs to be built. The compressor is variable speed but the latency associated with the speed change vs. temperature is long and inconsistent. It does not appear that 2x motor speed provides 2x cooling. I am thinking a combination of an adjustable expansion valve and varying the speed of the compressor could satisfy the requirements but have no idea how to design the system.

I am in San Jose, California and looking for engineering support out here. Any recommendations?