I have a refrigeration plant fitted with coil in coil condensors. I have always found them to have excessive subcooling, in the region of 10-20 degrees C, even after I have just recharged the plant with the correct gas charge and it is running at the design HP. I have eliminated air in the system as a cause, so does anyone have any idea whether this is a quirk of this type of condensor, or is there amother possible cause? As an aside, I also have a small A/C plant that has the same condensors and also has siimilar degrees of subcooling. In both cases the condensors are fed with seawater and HP is controlled by way of Penn valves.
Yours, hitting himself on the head with a hammer in order to make the thinking valve work, Bernoulli.