Slide 1
Energy recovery by pinch and mathematical programming method in
HEAT exchanger network (HEN)
FACULTY OF CHEMICAL ENGINEERINGUNIVERSITI TEKNOLOGI
MARA,SAMARAHANADDISON JUTTIE ANAK BANGGA2011482162
SUPERVISOR: PN.SUNITA JOBLITYPES OF HENTo determine the percent
energy saving by using different method and its evolution
To determine the best method of heat exchanger network by using
Pinch Technology or Mathematical Programming Method.
OBJECTIVESTo use data that extracting from literature of
chemical plant only
This study focuses on Pinch Technology Method and Mathematical
Programming Method only
SCOPE OF THE RESEARCHMajor aim is to focus on the best
performance of the network
HEN design and optimization is largely handled using
optimization methods
These algorithms have been extensively applied to HEN synthesis
problems which promised simple, fast and robust optimization
solutions
LITERATURE REVIEWMETHODOLOGY
RESULT ON PINCH TECHNOLOGY
Case Study 1 based on Recent Development in the Retrofit of Heat
Exchanger Networks
Existing NetworkBefore OptimizationEnergy SavingAfter
OptimizationEnergy SavingUtilities cost
(MM$/yr)27.2922.7817%21.4222%Energy and cost Reduction for case
study 1Case Study 2 based on Detailed equipment design in heat
exchanger networks synthesis and optimization
Existing NetworkBefore OptimizationEnergy SavingAfter
OptimizationEnergy SavingUtilities cost
(U$/yr)248530023889034%214824514%Energy and cost Reduction for case
study 2RESULT ON MATHEMATICAL PROGRAMMINGCase Study 6 based on
Simultaneous synthesis of mass exchange networks for waste
minimization
Existing NetworkBefore OptimizationEnergy SavingAfter
OptimizationEnergy SavingUtilities cost (U$/yr)9180009180000
%42970053 %Energy and cost Reduction for case study 6Case Study 8
based on Detailed equipment design in heat exchanger networks
synthesis and optimizationExisting NetworkBefore OptimizationEnergy
SavingAfter OptimizationEnergy SavingUtilities cost
(U$/yr)94317383778311 %59712537 %Energy and cost Reduction for case
study 8
DISCUSSION
Comparison Energy Saving (%) at Before and After Optimization
for Pinch Technology MethodComparison Energy Saving (%) at Before
and After Optimization for Mathematical Programming
MethodMathematical Programming Method gave the higher percentage of
energy saving (36%-53% )
Pinch Technology Method just around (6% - 22%)
Mathematical Programming Method produced higher energy
savings
CONCLUSIONThe number of data can be increased to achieve more
accurate results
Further investigation on the other types of HEN Method
In order to get the higher amount of energy saving, the type of
method must be chosen correctlyRECOMMENDATIONTHANK YOU
