diff options
Diffstat (limited to '3878/CH6')
| -rw-r--r-- | 3878/CH6/EX6.2/Ex6_2.sce | 9 | ||||
| -rw-r--r-- | 3878/CH6/EX6.4/Ex6_4.sce | 15 |
2 files changed, 24 insertions, 0 deletions
diff --git a/3878/CH6/EX6.2/Ex6_2.sce b/3878/CH6/EX6.2/Ex6_2.sce new file mode 100644 index 000000000..f56ea478e --- /dev/null +++ b/3878/CH6/EX6.2/Ex6_2.sce @@ -0,0 +1,9 @@ +clear +// Variable declaration +deltaT=5.2// The temperature rise in K +E=930// Total duty at the condenser in kW +C_pw=4.187// The specific heat of water in kJ/kg K + +// Calculation +mdot=E/(deltaT*C_pw)// The amount of water required in kg/s +printf("\n %0.3f kg/s water flow is required.",mdot) diff --git a/3878/CH6/EX6.4/Ex6_4.sce b/3878/CH6/EX6.4/Ex6_4.sce new file mode 100644 index 000000000..17bab9448 --- /dev/null +++ b/3878/CH6/EX6.4/Ex6_4.sce @@ -0,0 +1,15 @@ +clear +// Variable declaration +Cc=700// The cooling capacity in kW +P_c=170// The compressor power in kW +c_b=0.0012// Concentration of solids in bleed-off (kg/kg) +c_m=0.00056// Concentration of solids in make-up water in kg/kg + +// Calculation +E_tc=Cc+P_c// Cooling tower capacity in kW +h_fg=2420// Latent heat of water vapour in kJ/kg +w_e=E_tc*10**3/h_fg// Rate of evaporation in g/s +w_m=(w_e*(c_b))/(c_b-c_m)// Rate of make up in kg/s +w_bo=w_m-w_e// Rate of bleed off in kg/s +printf("\n \nRate of make up=%0.2f kg/s \nRate of bleed off=%0.2f kg/s",w_m/1000,w_bo/1000) + |