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Diffstat (limited to '3878/CH2/EX2.1/Ex2_1.sce')
| -rw-r--r-- | 3878/CH2/EX2.1/Ex2_1.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/3878/CH2/EX2.1/Ex2_1.sce b/3878/CH2/EX2.1/Ex2_1.sce new file mode 100644 index 000000000..a8796f8d4 --- /dev/null +++ b/3878/CH2/EX2.1/Ex2_1.sce @@ -0,0 +1,22 @@ +clear +// Variable Declaration +T_l=0+273// The required cooling temperature of room in °C +T_h=30+273// The temperature of outside air in °C +T_e=-5+273// The evaporating temperature of Refrigeration cycle in °C +T_c=35+273// The Condensing temperature of Refrigeration cycle in °C +deltaT=5// The temperature difference at the evaporator and the condenser in K +h_i=249.7// Enthalpy of fl uid entering evaporator in kJ/kg +h_e=395.6// Enthalpy of saturated vapour leaving evaporator in kJ/kg +h_sup=422.5// Enthalpy of superheated vapour leaving compressor in kJ/kg + +// Calculation +CarnotCOP=T_l/(T_h-T_l) +printf("\n The Carnot COP for the process is %0.1f ",CarnotCOP) +// For Refrigeration cycle, +CarnotCOP=T_e/(T_c-T_e) +printf("\n The Carnot COP for the refrigeration cycle is %0.1f ",CarnotCOP) +// For R134a, +Q=h_e-h_i// Cooling effect in kJ/kg +W_in=h_sup-h_e// Compressor energy input in kJ/kg +COP=Q/W_in// Ideal R134a vapour compression cycle COP +printf("\n The Carnot COP for the ideal vapour compression cycle is %0.1f ",COP) |