mocs mike hobbs mike steele mike mcgann scott daniels james linder pbl-7-98 chemical heat pump
Post on 20-Dec-2015
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![Page 1: MOCS Mike Hobbs Mike Steele Mike McGann Scott Daniels James Linder PBL-7-98 Chemical Heat Pump](https://reader035.vdocument.in/reader035/viewer/2022062516/56649d415503460f94a1b3bf/html5/thumbnails/1.jpg)
MOCS
Mike HobbsMike SteeleMike McGannScott DanielsJames Linder
PBL-7-98
Chemical Heat Pump
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Topics of Discussion
Problem Statement
Given
Required
Solutions
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Problem Statement
Analysis of Chemical Heat Pump
Analysis of Cooling Tower
Analysis of Boiler
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Flash tank
Heat exchangerExothermicreactor
Distillation column
endo reactor
Flash tankH2Acetone2-Propanol
H2
condenser
MIXED
Acetone
H2
Acetone2-prop
Compressor 1
Pump 1
Compressor 2
Liquid
gas
Reduction valve
water
Hot airCool air
Pump 2
Air 79 % N2 21 % O2
Natural gas
Combustion gassesCO2, H2O, N2, O2T= 375 F
BFW
SS
CR
BOILER
reboiler
Cooling tower
Ambient air85 F80 % RH
CWR 103 F
Exit air
Pump 3
CWS 75 F
COOLING TOWER
MOCSWORKING DIAGRAMPBL-7-98
WATER
2- prop & acetone
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Given: Chemical Heat Pump
Diameter of L1 = 6.35 mm
Average Velocity = 10 m/sec
Temperature L6 = 200 C
Mole composition of L1= .97 2-Propanol
Mole composition of L5= .02 2-Propanol
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Given: Chemical Heat Pump (continued)
Hot Air going into Endo 23.8 C
Relative Humidity 80 %
Cool Air coming out of Endo 15.5 C
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Required: Chemical Heat Pump
Energy Supplied into Endo Reactor (Qin)
Diameter of L6
Partial Pressures of L6
Amount of Water Condensed in Endo
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Endo Reactor
Q in
Hot air
Nextpage
L 202
L 2
L 201
Acetone2- Prop
L 3Condenser
L 5
L 4
L 803
Water
Cool air
L 303
Pump 2
L 1L 101
H2
Re-boiler
Reduction valve
Acetone2-Prop
L 801
CWR
Flash Tank 1
DistillationColumn
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Analysis: Chemical Heat Pump (Endo)
Qin = 353000 Btu/ hr (29 ton unit)
Water Condensed 168 lb/hr (21 gal/hr)
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Exothermic Reactor
L 202 L 203Compressor 1
L 5Pump 1
ExoReactor
L 6L 501 Acetone
Heat ExchangerL 7
L 802
L 801
Gas
Compressor 2
L 8
L 804
H2
H2
Acetone2-Propanol
Flash Tank 2
H2
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Analysis: Exothermic Reactor
Diameter of L6 = 29.0 mm
Partial Pressure: 1.96 ATM Acetone
0.04 ATM 2-Propanol
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Given: Cooling Tower
Cold Water Return 39.4 C
Cold Water Supply 23.8 C
Input Ambient Air 29.4 C
Relative Humidity 80 % (Ambient Air)
Exit Air 30.5 C RH 90 %
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Given: Cooling Tower (continued)
Diameter for CWS and CWR: 0.05 m
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Cooling Tower
CWR103 FCooling
Tower
Ambient Air85 F80 % RH
L 301
L 302
Exit Air
Pump 3
WaterL 303CWS 75 F
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Required: Cooling Tower
Velocity for Cold Water Supply
Velocity for Cold Water Return
Pounds of Dry Air from Cooling Tower
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Analysis: Cooling Tower
Velocity of Cold Water Supply: 1418.0 m/hr
Velocity of Cold Water Return: 1425.0 m/hr
Pounds of Dry Air: 34,600 lb dry air/ hr
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Given: Boiler
Steam Supply 220 psig (q=1)
Cold Return (q=0)
Temperature of Exit Gas 190.5 C
Combustion Gasses: CO2, H2O, N2, O2
Excess Air 40 %
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Given: Boiler (continued)
Diameter for SS and CR: .05 m
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Boiler
Boiler Feed WaterBoiler
CombustionGassesCO2,H20,N2,O2
L 901L 903
CR
SS
Natural GasAir79 % N221 % O2
T= 375F
L 902
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Required: Boiler
Velocity of Steam Supply
Velocity of Cold Return
Flow Rate of Natural Gas
Percent Composition of Exit Gasses
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Analysis: Boiler
Velocity Steam Supply: 3960.0 m/hr
Velocity Cold Return: 36.7 m/hr
Amount of Natural Gas: 3.51 tons/month
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Analysis: Boiler (continued)
Composition of Flue Gasses:
CO2 = 7.0 %
H20 = 13.9 %
O2 = 5.6 %
N2 = 73.5 %
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Questions