For　the　purpose　of　redesigning　of　superheater　in　refrigeration　system　during　R22　phase-out,　the　effect　of　operating　parameters　on　effective　superheat　performance　of　R22　and　its　seven　alternative　refrigerants　have　been　studied　by　thermodynamic　calculation　and　analysis.　The　results　showed　that　the　influencing　factors　of　performance　contrast　between　effective　superheat　refrigeration　cycles　and　ideal　refrigeration　cycles　include　not　only　refrigerant　species,　but　also　parameters　of　operating　condition　of　cycle.　For　R22,　R152a　and　R410A,　the　performance　contrast　between　cycles　with　or　without　effective　superheat　is　strongly　depending　on　operating　conditions.　R290,　R134a,　R407C　and　R507　always　benefit　from　effective　superheat　in　regard　to　refrigerating　capacity　per　unit　swept　volume.　The　effective　superheat　has　negative　influence　on　cycle　performance　of　R717　under　all　calculated　conditions.