Analysis of Energy Efficiency in LiBr/H2O Absorption Heat Systems for Water Treatment Technologies

Owdeh Khaleef Shahad  Alabbas

doi:10.51699/cajotas.v6i3.1558

Owdeh Khaleef Shahad Alabbas Shahid Madani University of Azerbaijan / Department of Mechanical Engineering / Energy Conversion

DOI: https://doi.org/10.51699/cajotas.v6i3.1558

Keywords: LiBr/H₂O Absorption System, Energy Efficiency, Water Treatment, Thermal Energy, Membrane Distillation

Abstract

As people everywhere look for better ways to treat water in an environmentally friendly way, absorption heat systems have become a good choice because they can work with low levels of heat energy. Lithium bromide/water (LiBr/H₂O) absorption systems are gaining traction due to their applicability in thermal water treatment techniques like multi-effect distillation (MED) and membrane distillation (MD).This study examines how efficiently LiBr/H2O absorption heat systems use energy and whether they are effective for water treatment. The research studies how LiBr/H2O systems work with heat and energy in different situations. The study uses models and test data to see how well the system performs. It looks at important factors such as how well it works (COP), how much energy it uses (SEC), and how effectively it captures heat. The study also examines how the temperatures of the absorber and generator, the strength of the solutions, and outside heat sources influence how well the system performs. The results show that LiBr/H₂O absorption systems can significantly improve energy use in water treatment processes if they are set up with the proper heat and working conditions. These systems can use solar power or heat from waste, so they are helpful for areas that don't have regular electricity connections. Also, using these systems together with water cleaning methods can reduce carbon emissions and lower operating costs compared to older methods. The study shows that if properly designed and managed, LiBr/H₂O absorption systems can be an effective and eco-friendly choice for modern water treatment. In the future, we will work on making better systems and improving how they work in real-time to make them more useful.

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References

C. Nadjahi, H. Louahlia, and S. Lemasson, “Thermal management and innovative cooling solutions in data centers: A review,” Sustainable Comput. Informatics Syst., vol. 19, pp. 14–28, 2018.

T. Lu, X. Lü, M. Remes, and M. Viljanen, “Case study on air management and energy efficiency in a Finnish data center,” Energy Buildings, vol. 43, pp. 3360–3372, 2011.

S. Zimmermann, I. Meijer, M. K. Tiwari, S. Paredes, B. Michel, and D. Poulikakos, “Aquasar: A hot-water-cooled data center enabling direct energy reuse,” Energy, vol. 43, pp. 237–245, 2012.

K. Ebrahimi, G. F. Jones, and A. S. Fleischer, “A comprehensive review of data center cooling methods, operating conditions, and opportunities for low-grade heat recovery,” Renew. Sustain. Energy Rev., vol. 31, pp. 622–638, 2014.

A. Haywood, J. Sherbeck, P. Phelan, G. Varsamopoulos, and S. K. S. Gupta, “Sustainable data center design using heat-activated cooling,” in Proc. 12th Intersoc. Conf. Thermal Thermomech. Phenom. Electron. Syst. (ITHERM), 2010, pp. 2–5.

H. Chen, W. Cheng, W. Zhang, et al., “Energy savings assessment of an innovative spray cooling system for supercomputer centers,” Energy, vol. 141, pp. 304–315, 2017.

H. Chen, Y. Peng, and Y. Wang, “Thermodynamic evaluation of a hybrid cooling system incorporating waste heat recovery and load shifting for data centers,” Energy Convers. Manag., vol. 183, pp. 427–439, 2019.

P. Behnam, A. Arefi, and M. B. Shafii, “Exergy and thermoeconomic analysis of a trigeneration system powered by low-temperature geothermal energy,” Energy Convers. Manag., vol. 157, pp. 266–276, 2018.

X. G. Zhao and G. Wan, “Current status and future outlook of geothermal resources in China,” Renew. Sustain. Energy Rev., vol. 32, pp. 651–661, 2014.

W. L. Cheng, C. L. Wang, Y. L. Nian, et al., “Factors influencing heat extraction from enhanced geothermal systems considering water loss,” Energy, vol. 115, pp. 274–288, 2016.

C. L. Wang, W. L. Cheng, Y. L. Nian, et al., “Simulation of CO₂-based enhanced geothermal systems for heat extraction and CO₂ sequestration,” Energy, vol. 142, pp. 157–167, 2018.

D. Brown, “Two decades of reservoir testing in the U.S. Hot Dry Rock Program,” in Proc. World Geotherm. Congr., 1995.

R. Baria, J. Baumgärtner, F. Rummel, et al., “Conceptual development and understanding of HDR/HWR geothermal reservoirs,” Geothermics, vol. 28, no. 4–5, pp. 533–552, 1999.

R. Baria, J. Baumgärtner, A. Gérard, et al., “The European HDR project at Soultz-sous-Forêts, France (1987–1996),” Geothermics, vol. 28, no. 4–5, pp. 655–669, 1999.

W. L. Cheng, J. Liu, Y. L. Nian, and C. L. Wang, “Enhancing geothermal energy extraction from abandoned oil wells via thermal reservoir systems,” Energy, vol. 109, pp. 537–545, 2016.

J. Liu, W. L. Cheng, and Y. L. Nian, “Impact of stratigraphy and operation parameters on economic performance of geothermal double-well systems,” Energy, vol. 159, pp. 264–276, 2018.

W. L. Cheng, B. C. Han, Y. L. Nian, et al., “Theoretical analysis of wind-heat energy conversion and long-distance thermal transmission systems,” Energy Convers. Manag., vol. 137, pp. 21–33, 2017.

B. C. Han, W. L. Cheng, Y. L. Nian, et al., “Assessment of an ammonia–water absorption system for long-distance heating/cooling using geothermal energy,” Energy Convers. Manag., vol. 192, pp. 346–358, 2019.

X. Q. Zhai, M. Qu, Y. Li, et al., “A review on research and new design options for solar absorption cooling systems,” Renew. Sustain. Energy Rev., vol. 15, no. 9, pp. 4416–4423, 2011.

K. R. Ullah, R. Saidur, H. W. Ping, et al., “A review of solar thermal cooling and refrigeration technologies,” Renew. Sustain. Energy Rev., vol. 24, pp. 499–513, 2013.

X. Luo, Y. Wang, J. Zhao, et al., “Grey relational analysis for integrated cascade utilization of geothermal water,” Int. J. Green Energy, vol. 13, no. 1, pp. 14–27, 2016.

C. Vasilescu and C. I. Ferreira, “Solar-driven double-effect absorption cycles for sub-zero applications,” Int. J. Refrig., vol. 39, pp. 86–94, 2014.

G. P. Xu and Y. Q. Dai, “Theoretical analysis and optimization of a parallel-flow double-effect absorption chiller,” Appl. Therm. Eng., vol. 17, no. 2, pp. 157–170, 1997.

W. L. Cheng, C. L. Wang, Y. L. Nian, B. B. Han, and J. Liu, “Analysis of factors affecting heat extraction from EGS with water loss considerations,” Energy, vol. 115, pp. 274–288, 2016.

I. Bell, S. Quoilin, J. Wronski, et al., “CoolProp: Open-source fluid property database (Version 4.0.0),” Retrieved Nov. 20, 2013. [Online]. Available: https://coolprop.org