Volume : 1, Issue : 1, NOV 2015


S. Sultana


The performance of three-stage chiller with different mass allocation among upper, middle and bottom beds has been investigated numerically to determine the influence of the heat source temperature on cooling capacity, COP, and chilled water outlet temperature. It is found that the chiller can be driven effectively by the waste heat of temperature 50°C with the heat sink at environment temperature. Results show that cooling capacity can be improved with the optimum allocation of adsorbent mass to the bottom beds than that to the upper two beds. The improvement in Coefficient of Performance (COP) values, however, is less significant. It is also seen that the improvement in cooling capacity is more significant for the relatively higher heat source temperature.


Adsorption chiller, Three-stage, Re-heat scheme, Silica gel, Water

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[1] Ongoing Research Relevant for Solar Assisted Air Conditioning
Systems, International Energy Agency, Solar Heating and
Cooling Programme, Freiburg, 2002.
[2] Calm, J. M., Emissions and Environmental Impacts from Air-
Conditioning and Refrigeration Systems, International Journal
of Refrigeration, vol. 25, no. 3, pp. 293-305, 2002.
[3] McMullan, J. T., Refrigeration and the Environment - Issues and
Strategies for the Future, International Journal of Refrigeration,
vol. 25, no. 1, pp. 89-99, 2002.
[4] Papadopoulos, A. M., Oxizidis, S., and Kyriakis, N., Perspectives
of Solar Cooling in View of the Developments in the Air-
Conditioning Sector, Renewable and Sustainable Energy
Reviews, vol. 7, no. 5, pp. 419-438, 2003.
[5] Kashiwagi, T., Akisawa, A.,Yoshida, S., Alam, K.C.A., Hamamoto,
Y., Heat driven sorption refrigerating and air conditioning cycle in
Japan, In: Proceeding of the International Sorption Heat Pump
Conference, September 23-27, pp 50-60, shanghi china ,2002.
[6] Boelman, E.C. Saha, B.B., Kashiwagi, T., Experimental
investigation of a silica-gel water adsorption refrigeration cycle
the influence of operating conditions on cooling output and COP,
ASHRAE Trans Res, Vol-101(2), pp 358-366, 1995.
[7] M.Z.I. Khan, B.B. Saha, T. Miyazaki, A. Akisawa and T.
Kashiwagi: Proc. of the 2005 JSRAE Annual Conf. Japan, paper
no: C111.
[8] Saha, B.B., Boelman, E. C., Kashiwagi, T., Computatianalysis of an advanced adsorption refrigeration cycles,Energy
Vol-20, pp 983-994, 1995.