Thoretical Study for an Adsorption Refrigerator


  • Abdulghani Ramadan Faculty of Engineering, Garaboulli, Elmergib University, Libya
  • Khairi Mufth Faculty of Engineering, Garaboulli, Elmergib University, Libya
  • Abdul-Gaffr Omran Faculty of Engineering, Garaboulli, Elmergib University, Libya
  • Saif-Eddin Aloud Faculty of Engineering, Garaboulli, Elmergib University, Libya



Adsorption capacity, cooling, evaporator, condenser, driving temperature, equilibrium pressure


Adsorption cooling technology is one of the effctive means to convert low grade thermal energy in to effctive cooling, which improves energy effiency and lowers environmental pollution. The main objective of this study is to investigate the thermal performance of an adsorption refrigerator theoretically.
The working adsorbent/adsorbate pair used is Granular Activated Carbon, GAC/R134a pair. The effct of diffrent design parameters and operating conditions on the system performance is studied and interpreted. Some assumptions and approximations are also considered. A computer program is written using Matlab. Results show that the equilibrium adsorption capacity is highly affcted by the driving temperature and equilibrium pressure. Increasing equilibrium pressure leads to a corresponding increase in the equilibrium adsorption capacity whereas it is value is decreased as the driving temperature increases. Moreover, increasing the driving and evaporator temperatures raise the values of the Specifi Cooling Effct (SCE) and Coeffient of Performance (COP). The maximum values of SCE and COP are 60 KJ/kg and 0.4 corresponding to driving and evaporator temperatures of 100 oC and 20 oC respectively. However, increasing the condenser temperature leads to a remarked decrease in SCE and COP of the cooling system. SCE and COP values are 32 KJ/kg and 0.22 at driving and condenser temperatures of 100 oC and 40 oC respectively. When comparing
the present study results with literature, there is a good agreement in general. It is clear that the adsorption cooling system can be driven effctively by low grade heat sources such as, solar energy, waste heat energy, geothermal energy…etc.


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. NPTEL Courses,“History of refrigeration”, Version 1 ME, IIT Kharagpur, 1999.

. Ahmed A. Askalany, M. Salem, I.M. Ismael , A.H.H. Ali, M.G. Morsy, Bidyut B. Saha,” An overview on adsorption pairs for cooling”, Renewable and Sustainable Energy Reviews, Vol. 19, pp 565-572, 2013.

. Dalia Attan, M.A. Alghoul, B.B. Saha, J. Assadeq, K. Sopian,” Th role of activated carbon fier in adsorption cooling

cycles”. Renewable and Sustainable Energy Reviews, 15, pp 1708-1721, 2011.

. El-Sharkawy, I.I., Saha, B.B., Koyama, S., Srinivasan, K., “Isosteric heats of adsorption extracted from experiments of ethanol and HFC 134a on carbon based adsorbents”, Int. J. Heat Mass. Transfer, Vol. 50, pp 902-907, 2007.

. Askalany, A.A., Salem, M., Ismael, I.M., Ali, A.H.H., Morsy, M.G., “Experimental study on adsorption-desorption

characteristics of granular activated Carbon/R134apair”, Int. J. Refrigeration, Vol. 35, pp 494-498, 2012.

. Habib, K., Saha, B.B., Chakraborty, A., Koyama, S., Srinivasan, K., “Performance evaluation of combined adsorption refrigeration cycles”, Int. J. Refrigeration, Vol. 34, pp 129-137, 2001.

. Loh, W.S., El-Sharkawy, I.I., Ng, K.C., Saha, B.B., “Adsorption cooling cycles for alternative adsorbent/adsorbate pairs working at partial vacuum and pressurized conditions”, Appl. Thrm. Eng., Vol. 29, pp 793-798, 2009..

. Ahmed A. Askalany, Bidyut B. Saha , Mahmoud S. Ahmed, Ibrahim M. Ismail,” Adsorption cooling system employing granular activated carbon-R134a pair for renewable energy applications”, International Journal of Refrigeration, Vol.36, pp 1037-1044, 2013.

. M. Attalla, S. Sadek “Experimental Investigation of Granular Activated Carbon/R-134a Pair for Adsorption Cooling

System Applications”, Journal of Power and Energy Engineering, Vol. 2, pp 11-20, 2014.




How to Cite

A. . Ramadan, K. . Mufth, A.-G. . Omran, and S.-E. . Aloud, “Thoretical Study for an Adsorption Refrigerator”, Solar Energy and Sustainable Development Journal, vol. 8, no. 1, pp. 34–45, Jun. 2019.