I am a newbie on refrigeration. I read several documentation to understand how the refrigeration cycle works.
I didn't have the chance to apprentice all the theory in a very deep manner. Therefore I had to concentrate on understanding the basic concepts of the system.
More or less everything is clear to me. I only have a big lack on superheating. In the literature it is told that the superheating measured at the evaporator outlet should be quite low ( usually from 5 to 10 deg Celsius). It is stated that under these conditions, the heat absoprtion efficiency is maximum. In addition I see that when superheating is too low, I risk the flooding while when it is too high, I loss efficiency and I need to blower to speed up to condense the hot vapour.
The concept I can't understand is the following. Why superheating shall be low. In my mind, the higher is the vapour temperature at the outlet and the higher is the amount of heat I have absorbed. What is missing?
Thanks in advance
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