Assessment of Aqueous Lithium-based Salt Solutions as Working Fluid for Absorption Chillers using Aspen Plus

https://doi.org/10.22146/ajche.49555

Adonis P. Adornado(1*), Allan N. Soriano(2), Vergel C. Bungay(3)

(1) School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Intramuros, Manila 1002, Philippines
(2) School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Intramuros, Manila 1002, Philippines
(3) Department of Chemical Engineering, De La Salle University, Taft Ave., Manila 1004, Philippines
(*) Corresponding Author

Abstract


Absorption chillers are a viable option for providing waste heat-powered cooling
or refrigeration, thereby improving overall energy efficiency-less primary energy input,
lower emissions, and cost savings. This study focuses on the assessment of aqueous
lithium-based salt solutions as working fluid for absorption chiller in exploring the
possibility of developing new mixtures for absorption chillers to improve the performance
of the absorption refrigeration systems (ARSs). In this paper, the coefficient of
performance (COP) of a single-effect absorption chiller using aqueous lithium-based salt
solutions (LiF-H2O, LiCl-H2O, LiBr-H2O, and LiI-H2O) as working fluid was assessed using
Aspen Plus®. The simulation results obtained showed that the mass and energy were well
balanced for all systems. Furthermore, a direct proportionality relationship between COP
of absorption chillers and the van't Hoff factor, i of dissociated aqueous salt solutions was
observed. The highest COP value is 0.8930 for LiI-H2O among others.


Keywords


absorption chiller, lithium-based salt, refrigerant-absorbent pairs, water, coefficient of performance, Aspen Plus®

Full Text:

PDF


References

  1. Adornado, A. P., Soriano, A. N., Orfiana, O. N., Pangon, M. B. J., & Nieva, A. D. (2017). “Simulated Biosorption of Cd (II) and Cu (II) in Single and Binary Metal Systems by Water Hyacinth (Eichhornia crassipes) using Aspen Adsorption”. AJChE, 2, 21-43.
  2. Aspen Plus®, Version 2006, Aspen Technology Inc., 200 Wheeler Road Burlington, MA, USA.
  3. Florides, G., S. Kalogirou, S. Tassou, and L. Wrobel (2002). “Modelling and simulation of an absorption solar cooling system for Cyprus”. Solar Energy, 72, 43-51.
  4. Gebreslassie, B., G. Guillén-Gosálbez, L. Jiménez, and D. Boer (2009). “Design of environmentally conscious absorption cooling systems via multi-objective optimization and life cycle assessment”. Appl. Energy, 86, 1712-1722.
  5. Hufford, P. (1992). “Absorption chillers improve cogeneration energy efficiency”. ASHRAE Journal, 34, 46-53.
  6. Leron, G. M., A. P. Adornado, D. G. Zalvidea, L. P. Gutierrez, S. W. B. Suarez, A. N. Soriano, and M.-H. Li (2014). Selection of single and blended aqueous alkanolamine for post- combustion carbon dioxide capture using rate-based non-equilibrium process simulation. PIChE Journal, Vol. 15 (1).
  7. Maidment, G. and R. Tozer (2002). “Combined cooling heating and power in supermarkets”. Appl. Therm. Eng., 22, 653-665.
  8. Moné, C., D. Chau, and P. Phelan (2001). “Economic feasibility of combined heat and power and absorption refrigeration with commercially available gas turbines”. Energ. Convers. Manage., 42, 1559-1573.
  9. Nieva, A. D., F. C. De Vera, A. P. Adornado, B. P. Gallarte, and B. T. Doma Jr. (2016). “Simulation of biosorption of lead and copper with Pinus insularis using Aspen Adsorption®”. PIChE Journal, Vol. 16 (1).
  10. Sieres, J., J. Fernandez-Seara, and F. Uhia (2009). “Experimental characterization of the rectification process in ammonia-water absorption systems with a large-specific-area corrugated sheet structured packing”. Int. J. Refrig., 32, 1230-1240.
  11. Somers, C., A. Mortazavi, Y. Hwang, R. Radermacher, P. Rodgers, and S. Al- Hashimi (2011). “Modeling water/lithium bromide absorption chillers in ASPEN Plus”. Appl. Energy, 88, 4197-4205.
  12. Soriano, A. N., A. P. Adornado, A. A. Pajinag, D. J. F. Acosta, N. M. Averion, G. M. Leron, and V. C. Bungay (2015). “Multicriterial analysis of simulated process of post-combustion capture of pure H2S and mixtures of H2S and CO2 using single and blended aqueous alkanolamines”. AJChE, 1, 72-92.
  13. Sumathy, K., Z. Huang, and Z. Li (2002). “Solar absorption cooling with low grade heat source-a strategy of development in South China”. Solar Energy, 72, 155-165.
  14. Tremblay, D., S. Watanasiri, Y. Song, and C.-C. Chen (2010). “Benefits of the new electrolyte models in Aspen Plus® version 7.2”. Best in Class Electrolyte Thermodynamics. Aspen Technology Incorporated, Ten Canal, Cambridge, U. S. A.



DOI: https://doi.org/10.22146/ajche.49555

Article Metrics

Abstract views : 1636 | views : 3653

Refbacks

  • There are currently no refbacks.


ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.