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Diffstat (limited to '2510/CH18/EX18.18')
| -rwxr-xr-x | 2510/CH18/EX18.18/Ex18_18.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/2510/CH18/EX18.18/Ex18_18.sce b/2510/CH18/EX18.18/Ex18_18.sce new file mode 100755 index 000000000..3ba48e148 --- /dev/null +++ b/2510/CH18/EX18.18/Ex18_18.sce @@ -0,0 +1,24 @@ +//Variable declaration: +m1 = 144206 //Mass flow rate of flue gas (lb/h) +cp = 0.3 //Average flue gas heat capacity (Btu/lb. F) +T1 = 2050 //Initial temperature of gas ( F) +T2 = 560 //Final temperature of gas ( F) +T3 = 70 //Ambient air temperature ( F) + +//Calculation: +Q = m1*cp*(T1-T2) //Duty rate (Btu/h) +//From appendix: +cpa = 0.243 //Average ambient air heat capacity 70 F (Btu/lb. F) +MW = 29 //Molecular weight of air at 70 F +Q5 = round(Q*10**-5)/10**-5 +ma = Q5/(cpa*(T2-T3)) //Mass of air required (lb/h) +m2 = round(ma)/MW //Moles of air required (lb mol/h) +m3 = round(ma)*13.32 //Volume of air required (ft^3/h) +ma = round(ma*10**-2)/10**-2 +m2 = round(m2*10**-1)/10**-1 +m3 = round(m3*10**-3)/10**-3 + +//Result: +printf("The mass of air required is : %f lb/h .",ma) +printf("The moles of air required is : %f lb mol/h .",m2) +printf("The volume of air required is : %f ft^3/h .",m3) |