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Abstract

This is a thermodynamic study of fixed bed adsorption cycles using two pairs; zeolite-water and activated carbon-methanol. It proves the benefit of the activated carbon-methanol pair for refrigeration (-20 C to +10 C) and of multibed cycles. A three adsorber cycle combining a high temperature two adsorber zeolite-water cycle and a low temperature intermittent activated carbon-methanol cycle yields a cooling COP equal to 1 for air conditioning, which is an excellent ratio. As two components (evaporator and adsorber) are rate limiting for those cycles, solutions for improvements are sought. A good solution for methanol evaporation consists of a vapour lift evaporator. Experiments show that bimodal beds do not lead to good results in the optimisation of fixed bed adsorbers, where low pressure conditions are required, whereas metallic foam addition leads to very good results. Isotherm measurements of natural zeolite from Messina show that these zeolite samples are not suitable for heat pump applications since their adsorption capacity is too low.

Additional information

Authors: DOUSS N, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);ABDALLAH K, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);GRENIER P H, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);GUILLEMINOT J J, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);GURGEL J, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);SUN, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);L M, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);SAHNOUNE H, LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR);MEUNIER F LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR), LIMSI, CAMPUS UNIVERSITAIRE, ORSAY (FR)
Bibliographic Reference: EUR 12533 EN (1989) 79 PP., MF, ECU 4, BLOW-UP COPY ECU 10 AVAILABLE FROM THE OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES, L-2985 LUXEMBOURG
Availability: Can be ordered online
Record Number: 1989128031700 / Last updated on: 1990-11-09
Category: PUBLICATION
Available languages: en
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