Dear Friends,
Would you please help me to solve this problem ?

View 1 :
Regarding sub-cooling, When I see different sources I see we should read discharge pressure then get saturation temperature from discharge pressure (T1), Also get liquid line temperature after condenser (T2) , Sub-cooling = T1 – T2.

View 2 :
But when I see SPORLAN documents (Photo below) , SPORLAN says as you know pressure at inlet of condenser is different with condenser outlet and at condenser we have pressure lost. By this while we want to measure sub-cooling we should get saturation pressure of receiver tank to know saturation temp. Also measure liquid line temperature. Decrease these two temp. form each other to get sub-cooling.

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Please share your opinion with me.

Sincerely yours.