International Scientific Journal

Thermal Science - Online First

Authors of this Paper

External Links

online first only

Thermal analysis of a novel single-effect absorption refrigeration system using water/ionic liquid as working fluids

Based on the demand of improving the cooling performance of traditional absorption refrigeration system, a novel single-effect refrigeration system(SEARS) with assisted compressors using water/ionic liquids(ILs)as working fluids was comprehensively analyzed. In present work, four kind of ILs:1-butyl-3-methylimidazoliumdibutylphosphate[BMIM][DBP], 1-methyl-3-methylimidazoliumdimethylphosphate[MMIM][DMP], 1-ethyl-3-methylimidazolium dimethylphosphate[EMIM][DMP]and 1-ethyl-3-methylimidazolium acetate[EMIM][AC], which was studied as working fluid in absorption system at the first time, was modeled and simulated in both systems. Thermodynamic properties of new SEARS were numerically analyzed by non-random two-liquid(NRTL) models and the mass and energy conservation equations. The effects of compression ratio(pr) and temperature on the coefficient of performance(COP) and exergetic efficiency(ECOP) were graphed and discussed. The simulating results showed the potential of IL to be used as substitute for traditional working fluids. Moreover, comparison results suggested the system with auxiliary compressors was better than the traditional system for its lower heat source temperature and higher cooling performance. It was better to increase the pr of the compressor located between the absorber and the evaporator than to increase the pr of the compressor located between the generator and the condenser.
PAPER REVISED: 2021-11-20
PAPER ACCEPTED: 2021-11-25
  1. M.M. A. Saleh, Optimization study of a single effect water lithium bromide absorption refrigeration system powered by flat plate collector in hot regions, Energy Conversion and Management , 87 (2014) 29 36.
  2. Y.H. Paul Kalinowski, Reinhard Radermacher, Saleh Al Hashimi, Peter Rodgers, Application of waste heat powered absorption refrigeration system to the LNG recovery process, International Journal of Refrigeration , 32 (2009) 687 694.
  3. C.W. Yufei Wang, Xiao Feng, Optimal match between heat source and absorption refrigeration, Compu ters and Chemical Engineering , 102 (2017) 268 277.
  4. A.A. S.C. Kaushik, Energy and exergy analysis of single effect and series flow double effect water lithium bromide absorption refrigeration systems, International Journal of Refrigeration , 32 (2009) I2 47 I258.
  5. A.M. Bhaumik Modi, Bhavesh Patel, Energy and Exergy Investigation of Small Capacity Single Effect Lithium Bromide Absorption Refrigeration System, Energy Procedia , 109 (2017) 203 210.
  6. H.P.a.F.Z. T. Berlitz, An ammonia water absorption refr igerator with a large temperature lift for combined heating and cooling, International Journal of Refrigeration , 21 (1998) 219 229.
  7. K.R.S. Robin D. Rogers, Ionic Liquids Solvents of the Future?, SCIENCE , 302 (2003) 792 793.
  8. A. Yokozeki, Theoretical performances of various refrigerant absorbent pairs in a vapor absorption refrigeration cycle by the use of equations of state, Applied Energy, 80 (2004) 383 399.
  9. Z.Z. Jing Ren, Xiaodong Zhang, Vapor pressures, excess enthalpies, and specific heat cap acities of the binary working pairs containing the ionic liquid 1 ethyl 3 methylimidazolium dimethylphosphate, The Journal of Chemical Thermodynamics, 43 (2011) 576 583.
  10. Z.Z. Zongbao He, Xiaodong Zhang, Hao Feng, Thermodynamic properties of new heat p ump working pairs:1,3 Dimethylimidazolium dimethylphosphate and water,ethanol and methanol, Fluid Phase Equilibria , 298 (2010) 83 91.
  11. S.P. Markus Preißinger, Dieter Brüggemann, Ionic liquid based absorption chillers for usage of low grade waste heat i n industry, I nternational J ournal of E nergy R esearch , 37 (2013) 1382 1388.
  12. F.M. El Shaimaa Abumandour, Dominique Alonso, Performance of an absorption heat transformer using new working binary systems composed of {ionic liquid and water}, Applied Therm al Engineering , 94 (2016) 579 589.
  13. D.Z. Li Dong, Nan Nie, Yun Li, Performance prediction of absorption refrigeration cycle based on the measurements of vapor pressure and heat capacity of H2O +
  14. R.R.B. Gorakshnath D. Takalkar, Nilesh A. Mali, Sunil S. Bhagwat, Thermodynamic analysis of EMISE Water as a working pair for absorption refrigeration system, Applied Thermal Engineering , 148 (2019) 787 795.
  15. S.K. Yoon Jo Kim, Yogendra K. Joshi, Andrei G. Fedorov, Paul A. Kohl, Thermodynamic analysis of an absorption refrigeration system with ionic liquid/refrigerant mixture as a working fluid, Energy 44 (2012) 1005 1016.
  16. V.R.F. Daniel Moreno, Juan de Riva, Rubén Santiago, Cristian Moya, Marcos Larriba, José Palomar, Absorption refrigeration cycles based on ionic liquids: Refrigerant/absorbent selection by thermodynamic and process analysis, Applied Energy , 213 (2018) 179 194.
  17. A.L. R. Ventas, A. Zacarías, M. Venegas, Ammonia lithium nitrate absorption chiller with an integrated low pressure compression booster cycle for low driving temperatures, Applied Thermal Engineering , 30 (2010) 1351 1359.
  18. M.V. D. Boer, A. Coronas, Performance of double effect absorption compression cycles for air conditioning using methanol TEGDME and TFE TEGDME systems as working pairs, International Journal of Refrigeration , 21 (1998) 542 555.
  19. Q.S. Wei Chen, Yang Bai, Bin Zhang, Numerical investigation of the thermal performance of compressor assisted double effffect absorption refrigeration using
  20. Z.Y. Xiangyang Liu, Lihang Bai, Maogang He, Performance comparison of two abs orption compression hybrid refrigeration systems using R1234yf/ionic liquid as working pair, Energy Conversion and Management , 181 (2019) 319 330.
  21. G.D. Yanjun Sun, Jian Wang, Xiaopo Wang, Wei Wu, Performance analysis of R1234yf/ionic liquid working fluids for single effect and compression assisted absorption refrigeration systems, International Journal of Refrigeration , 109 (2020) 25 36.
  22. F. A. COSTELLO, A hybrid solar air conditioning system, Salar Energy , 18 (1976) 149 152.
  23. D.H. Xiaodong Zhang, Performance simulation of the absorption chiller using water and ionic liquid 1 ethyl 3 methylimidazolium dimethylphosphate as the working pair, Applied Thermal Engineering , 31 (2011) 3316 3321.
  24. Q. Feng, The Properties Research on New Working Pairs of 1 butyl 3 methylimidazolium Dibutylphosphate and Water / Alcohol, in: College of Chemical Engineering, Dalian University of Technology, 2011.
  25. Z. Zhou, The Thermodynamic Properties Research of The New Working Pairs of Ionic Liquid
  26. Q.X. Ding Lu, Gaofei Chen, Xueqiang Dong, Yin Bai, Maoqiong Gong,Yanxing Zhao, Jun Shen, Modeling and analysis of an ammonia water absorption refrigeration system utilizing waste heat with large temperature span, International Journal of Refrigeration , 103 (2019) 180 190.