Quote Originally Posted by chillyblue View Post
If the superheat is high would the delta-T be much higher than when you have a normal superheat??

Am i correct in saying you should have approx (commercial refrigeration) 3 to 6 Deg C temp difference (air on to air air off)

Would the temp difference (air on to air off) be the same regardless of the high or correct room temp???

I.e design room temp 0 deg C
will the air on-off temp still be 3- 6 deg C difference when the room temp is 20 deg C
And will it still be 3-6 deg C when the room is at 1 deg C

CB
Delta=T upper limit differs for various types of systems as well as for different design temperature and humidity requirements. And this goes beyond the scope of "Refrigeration 101".

Suffice it to say that if you are familiar with the delta-T limit for a particular type of system, anything above this limit is an unambiguous indicator of an airflow problem.