Answer Happy

Consider a two-stage cascade refrigeration system operatingbetween -80 o C and 80 o C. Each stage operateson an ideal vapor-compression refrigeration cycle. Upper cycle useR-12 as working fluid, lower cycle use R-13. In the lower cyclerefrigerant condenses at 0 o C, in the upper cyclerefrigerant evaporates at -5 o C. If the mass flow ratein the lower cycle is 1 kg/s, determine what would with COP be ifwe consider a one-stage ideal vapor-compression system between-80 o C and 80 o C with R-13 as the workingfluid?
Consider a two-stage cascade refrigeration system operating between −80 o C and 80 o C. Each stage operates on an ideal vapor-compression refrigeration cycle. Upper cycle use R12 as working fluid, lower cycle use R- 13. In the lower cycle refrigerant condenses at 0 o C, in the upper cycle refrigerant evaporates at −5 o C. If the mass flow rate in the lower cycle is 1 kg/s, determine what would with COP be if we consider a one-stage ideal vapor-compression system between −80 o C and 80 o C with R-13 as the working fluid? 1.21 1.51 1.48 No COP