Optimum Design of an Absorption Heat Pump Integrated with a Kraft Industry using Genetic Algorithm

In this study the integration of an absorption heat pump (AHP) with the concentration section of an industrial pulp and paper process is investigated using pinch technology. The optimum design of the proposed water-lithium bromide AHP is then achieved by minimizing the total annual cost. A comprehensive optimization is carried out by relaxation of all stream pressure drops as well as heat exchanger areas involving in AHP structure. It is shown that by applying genetic algorithm optimizer, the total annual cost of the proposed AHP is decreased by 18% compared to one resulted from simulation.

Authors:

• B. Jabbari
• N. Tahouni
• M. H. Panjeshahi

Keywords:

• Absorption Heat Pump
• Genetic Algorithm
• Kraft Industry
• Pinch Technology

References:

[1] L. Savulescu, B. Poulin, A. Hammache, S. Bedard, S. Gennaoui, "Water
and Energy Savings at a Kraft Paperboard mill using Process
Integration", P&PC 106, 29-31 (2005).
[2] B. Bakhtiari, E. Mateos, R. Legres, J. Paris, "Integration of an
Absorption Heat Pump in the Kraft Pulping Process": Feasibility study,
Repr. PAPTAC Ann. Meet., A, 235-239, Montreal (2007).
[3] A. Costa, V. Neuhann, J. Vaillancourt, "Applications of Absorption Heat
Pumps in the Pulp and Paper industry for Increased Efficiency and
Reduction of GHG Emissions", 191-195, Montreal (2004).
[4] A. Costa, B. Bakhtiari, S. Schuster, J. paris, "Integration of Absorption
Heat Pumps in a Kraft Pulp Process for Enhanced Energy Efficiency",
Energy 34, 254-260 (2009).
[5] H. Jarlos, "Thermodynamic Modeling of Absorption Heat Pumps",
Master-s Thesis, Department of Energy and Environment, Chalmers
University, 2010.
[6] S. Kalogirou, G. Florides, S. Tassou, L. Wrobel, "Design and
Construction of A Lithium Bromide Water Absorption Refrigerator",
CLIMA 2000/Napoli 2001 World Congress - Napoli (I), 15-18
September 2001
[7] R. Smith, "Chemical Process Design and Integration", Wiley: New
York, 2005.
[8] A. Costa, E. Queiroz, "Design Optimization of Shell and Tube Heat
Exchangers", Applied Thermal Engineering 28 (2008) 1798-1805.
[9] M. Serna, A Jime'nez, "An efficient method for the design of shell and
tube heat exchangers". Heat Transfer Engineering 2004; 25:5-16.
[10] R. Selbas,O¨ . Kizilkan, M. Reppich, "A new design approach for shell
and tube heat exchanger using genetic algorithms from economic point
of view", Chemical Engineering and Processing 45 (2006) 268275.
[11] B. Allen, L. Gosselin, "Optimal Geometry and Flow Arrangement for
Minimizing the Cost of Shell and Tube Condenser", International
Journal of Energy Research 32, 958-969 (2008).
[12] J. M. Ponce, M. Serna, V. Rico, A. Jime'nez, "Optimal design of shell
and tube heat exchangers using genetic algorithm", 16th European
Symposium on Computer Aided Process Engineering and 9th
/International Symposium on Process Systems Engineering, 2006.
[13] Ph. Wildi-Tremblay, L. Gosselin, "Minimizing shell and tube heat
exchanger cost with genetic algorithm and considering maintenance",
International Journal of Energy Research 31, 867-885 (2007).
[14] TW. Botsch, K. Stephan, "Modelling and simulation of the dynamic
behavior of shell-and-tube condenser", International Journal of Heat and
Mass Transfer 1997; 40:4137-4149
[15] JL. Alcock, DR. Webb, "An experimental investigation of the dynamic
behavior of a shell and tube condenser", International Journal of Heat
and Mass Transfer 1997; 40: 4129-4135.
[16] G.A. Smook, "Handbook for Pulp Paper Technologists", Angus Wild
Publication Inc., Vancouver (2002).
[17] M. Marinova, E. Mateos-Espejel, B. Bakhtiari, J. Paris, "A New
Methodology for the Implementation of Trigeneration in Industry":
Application to the Kraft Process, 333-351, (2007).
[18] B. Jabbari, N. Tahouni, M. H. Panjeshahi, "Improving Energy
Efficiency in Pulp and Paper industry, Using a CCHP System",
Proceeding of the 7th International Chemical Engineering Congress &
Exhibition, (IChEC), Kish Island, Iran, 21-24 Nov, 2011.
[19] M. R. Jafari Nasr, G. T. Polley, "An Algorithm for Cost Comparison of
Optimized Shell-and-Tube Heat Exchangers with Tube Inserts and Plain
Tubes", Chem. Eng. Technol. 23 (2000) 3.
[20] R. S. Hall, J. Matley, and K. J. McNaughton, "Current Costs of Process
Equipment", Chem. Eng. 89(7), 80-116 (Apr. 5, 1982).
[21] RK. Sinnot, Coulson and Richardson-s Chemical Engineering.
Butterworth-Heinemann: Stoneham, 1996.
[22] RK Shah, DP. Sekulic, "Fundamentals of Heat Exchanger Design",
Wiley: New Jersey, 2003
[23] V.K. Patel, R.V. Rao, "Design optimization of shell-and-tube heat
exchanger using particle swarm optimization technique", Applied
Thermal Engineering, Vol. 30, pp. 1417-1425, (2010).
[24] D.Q. Kern, Process Heat transfer, McGraw-Hill, New York (1950), p.
161-167
[25] J. C. Chen, "Correlation for boiling heat transfer to saturated fluids in
convective flow", Ind Eng Chem Proc Des Dev, 5: 322-329, 1996.
[26] D. Chisholm, "A theoretical basis for the Lockhart-Martinelli correlation
for two phase flow", Int J Heat Mass Trans, 10: 1767-1778, 1967.
[27] IDR. Grant, D. Chisholm, "Two-phase flow on the shell side of a
segmentally baffled shell and tube heat exchanger", International Journal
of Heat Transfer 1979; 101:38-42.