Transcript heat exchanger (Chemcad)

Heat Exchangers (in ChemCAD)
Team 4
David Bigelow, Sean Coluccio, Luke Rhodes, Peguy Touani
February 12th, 2015
CHBE 446 0201
Heat Exchangers in ChemCAD
 ChemCAD offers a variety of heat exchangers for abundant uses
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Heating
Cooling
Reboiling
Condensing
Evaporating
 Can be specified minimally or with exact specifications
Types of Heat Exchangers
Heat Exchanger Setup
• Requires input and output of specified components
• Operating parameters must be specified
• Desired heat exchange specified
• Ability to control heating/cooling steams with detailed heat exchangers
Basic Heat Exchanger #1
 Specify components for feed stream
 Defined feed parameters
 Can be specified from previous process
 Ensure that units are as desired
 Example using Common SI
Basic Heat Exchanger #1
 Specify desired
performance at a
minimum
 Example using specified
outlet temperature
 Can specify pressure
drop or outlet pressure
 Further specifications
available via other tabs
HE #1 Results
 ChemCAD will not allow “run” if process
improperly specified
 Results can be displayed in multiple formats
 Can display balances as well
Two-Stream Heat Exchanger (HE #5)
 Ability to manipulate hot
and cold streams
 Useful for two product
streams of differing
temperature
 Allows for different
specifications and
variations of operation
Two-Stream Heat Exchanger
CHEMCAD Simulation
Two-Stream Heat Exchanger
CHEMCAD Simulation (cont.)
Two-Stream Heat Exchanger
CHEMCAD Simulation (cont.)
Two-Stream Heat Exchanger
CHEMCAD Simulation (cont.)
Two-Stream Heat Exchanger
CHEMCAD Simulation (cont.)
Pros and Cons
 Cons
 Not always accurate with reality
 Does not consider corrosion or operating detriments
 Cost estimation not always reasonable
 Pros
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Effective for simulation of processes for varying scales
Able to insert heat exchangers throughout process
Produces results in multiple formats
Abundant variations and possibilities
Questions?