hobbs.z.evap - GRADED

hobbs.z.evap - GRADED - Zack Hobbs Calculated Values Effect...

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Unformatted text preview: 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 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 D1 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 f 0 f 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 Effect 1 Properties: U=150 Btu/ (hr ft2 F) A=4000 ft2 Cp=0.85 Btu/ (lb F) Steam In Liquor Out Vapor Steam Condensate Out Steam Condensate Out Effect 2 Eff 3 Properties: U=200 Btu/ (hr ft2 F) A=4000 ft2 Cp=0.89 Btu/ (lb F) Prope U=30 (hr ft2 A=400 Cp=0. (lb F) Vapor Liquor Liquor Effect 2 Eff 3 Properties: U=200 Btu/ (hr ft2 F) A=4000 ft2 Cp=0.89 Btu/ (lb F) Prope U=30 (hr ft2 A=400 Cp=0. (lb F) Vapor Liquor Liquor Condensate Out Conden Condensate Out Conden Flow (lb/hr) 23500 Pressure 19.3 in Hg vacuum fect erties: 0 Btu/ 2 F) 00 ft2 .92 Btu/ Liquor In Vapor out fect erties: 0 Btu/ 2 F) 00 ft2 .92 Btu/ Liquor In Vapor out Flow lb/hr 160000 Temp F 183 % Solids 14.5 Liquor In nsate Out 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., FEffect Temp....
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This note was uploaded on 02/07/2011 for the course PSE 417 taught by Professor Kirkman during the Fall '10 term at N.C. State.

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hobbs.z.evap - GRADED - Zack Hobbs Calculated Values Effect...

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