Recent content by square_root_pharms

Im looking to take a 2 ton window AC unit and build a glycol recirculating chiller. Most AC unit evaporators will not get below sub zero temps. is there a refrigerant type change or modification that can be made to a 230v 2600watt 2-ton window ac to get the evap coil temps lower? the colder the...

pulled the tstat thermocouple from the sheath so it would read warmer than it was. overnight the freezer was able to get down to -25F this was as cold as i could get it.

understandable, which is why the expensive ultra low freezers are 2 stage refrigeration loops i guess.

my current use deep freezer cycles down to about -18f when the compressor runs and heats back up to around -10f when the compressor kicks off. right now at full cold setting with the oem thermostat the compressor runs for about 30 mins then kicks off for 30 mins. Ive thought about skinning the...

Has anyone wired in a Temp controller to bypass a factory t-stat to get their cheap deep freezers colder? What is the chilling “limits” of standard R134a refrigerant in a chest freezer? ive read online on different websites and PC benchmark / overclocking crowds that getting below -20F could...