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# hobbs.z.evap - GRADED - ZackHobbs CalculatedValues...

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Zack Hobbs Calculated Values Effect 1 Effect 2 Effect 3 U (Btu/(hr*ft^2*F)) 150 200 300 Area (ft^2) 4000 4000 4000 Cp (Btu/(lb*F)) 0.85 0.89 0.92 Liquor In lb/hr 115452.84 136500 160000 Liquor temp, F 130.51 166.81 183 Solids frac, lb/lb total 0.2 0.17 0.15 BPR, F 3.4 2.76 2.29 Vapor out, lb/hr 17050.88 21047.16 23500 Effect Pressure, psia 1.45 2.26 5.22 Effect Temp., F 114.26 130.51 164.05 Heat of Vap., Btu/lb 1029.02 1019.57 999.8 Q, Btu/hr 16284016.18 17384522.31 21042907.8 Delta T, F 27.14 21.73 17.54 Temp of Vapor In 157.65 188.55 200.54 Vapor In lb/hr 15824.83 17050.88 21047.16 Evaporation, lb/hr 17050.88 21047.16 23500 Liquor flow out, lb/hr 98401.96 115452.84 136500 % Solids Out 23.58% 20.09% 17.00% liquor solids 23200 23200 23200 Evaporator Capacity, lb/hr 61598.04 Steam Economy 3.89

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Steam Table Equations PC 218.17 X 336.33 input TF 100 TK 310.94 (C61-32)/1.8+273.16 A1 3.24 B1 0.01 C1 0 D1 0 output Pressure (atm) 0.06 output Pressure (psia) 0.95 Heat Vap., (Btu/lb) Temp. F a 0.01 a -0.18 b -1.3 b 3.84 c -8.21 c 11.48 d -16.38 d 31.13 e 0 e 0 f 0 f 0 g 1045.81 g 86.59 input Pressure (psia) 5.2 Pressure (psia) 5.2 output Heat of Vap., Btu/lb 999.87 Temp. F 163.92 vapor out of 3
Q=UA delT User Inputs: Effect 1 Effect 2 Effect 3 U (Btu/(hr*ft^2*F)) 150 200 300 Area (ft^2) 4000 4000 4000 Cp (Btu/(lb*F)) 0.85 0.89 0.92 Liquor In lb/hr 160000 Liquor temp, F 183 Solids % 14.5 Steam out, lb/hr 23500 should have used Steam out, in Hg Vacuum 19.3 effected by errors described use solids out of effect  (      temp of vapor in to calculate TK, not temp of liquor  (-3pts) should have used temp of liquor out, not in  (-3pts) should have used heat of vapor in, not out  (-3pts) Effect  1 Properties: U=150 Btu/ (hr ft2 F) A=4000 ft2 Cp=0.85 Btu/ (lb F) Steam In Liquor Out Vapor

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Steam Condensate Out
Effect  2 Effe 3 Properties: U=200  Btu/ (hr ft2 F) A=4000 ft2 Cp=0.89  Btu/ (lb F) Prope U=300 (hr ft2 A=400 Cp=0. (lb F) Vapor Liquor Liquor

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Condensate Out Conden
Flow (lb/hr) 23500 Pressure 19.3 in Hg vacuum ect   erties: Btu/ 2 F) 00 ft2 .92  Btu/ Liquor In Vapor out

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Flow lb/hr 160000 Temp F 183 % Solids 14.5 Liquor In nsate Out
Effect 1 Effect 2 U (Btu/(hr*ft^2*F)) 150 200 Area (ft^2) 4000 4000 Cp (Btu/(lb*F)) 0.85 0.89 Liquor In lb/hr 116126.32 136500 Liquor temp, F 130.51 166.81 Solids frac, lb/lb total 0.2 0.17 BPR, F 3.37 2.76 Vapor out, lb/hr 16377.4 20373.68 Effect Pressure, psia 1.45 2.26 Effect Temp., F 114.26 130.51 Heat of Vap., Btu/lb 1029.02 1019.57 Q, Btu/hr 15581208.37 16697866.43 Delta T, F 25.97 20.87 Temp of Vapor In 156.48 187.69 Vapor In lb/hr 15141.84 16377.4 Evaporation, lb/hr 16377.4 20373.68 Liquor flow out, lb/hr 99748.91 116126.32 % Solids Out 23.26% 19.98% Steam from Flash tank lb/hr 673.48 liquor solids 23200 23200 Evaporator Capacity, lb/hr 60251.09 Steam Economy 3.98 Steam change from base, % -4.32 did not maintain solids in strong liquor  (-5pts) It appea resulted

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Steam Table Equations PC 218.17 X 336.33 input TF 100 TK 310.94 (C61-32)/1.8+273. A1 3.24 B1 0.01 C1 0 D1 0 output Pressure (atm) 0.06 output Pressure (psia) 0.95 Heat Vap., (Btu/lb) Temp. F a 0.01 a b -1.3 b c -8.21 c d -16.38 d e 0 e f 0 f g 1045.81 g input Pressure (psia) 5.2 Pressure (psia) output Heat of Vap., Btu/lb 999.87 Temp. F vapor out of 3
Q=UA delT Effect 3 300 User Inputs: Effect 1 Effect 2 4000 U (Btu/(hr*ft^2*F)) 150 200 0.92 Area (ft^2) 4000 4000 160000 Cp (Btu/(lb*F)) 0.85 0.89 183 Liquor In lb/hr 0.15 Liquor temp, F 2.29 Solids % 23500 Steam out, lb/hr 5.22 Steam out, in Hg Vacuum 164.05 999.8 21042907.8 17.54 200.54 20373.68 23500 136500 17.00% 23200 Effect  1 Properties: U=150 Btu/ (hr ft2 F) A=4000 ft2 Cp=0.85 Btu/

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hobbs.z.evap - GRADED - ZackHobbs CalculatedValues...

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