Abstract
Some additives and binders were chosen for the preparation of 4A-zeolite-based composites with high equivalent thermal conductivity for heat pumps application. Additives (SiC, Si3N4, graphite) and binders (PTFE, Al(OH)3) were tested for their effectiveness in terms of equivalent thermal conductivity and maximum water adsorption capacity of the composites. The influence of the equivalent thermal conductivity of the composite adsorbents on the specific power of the heat pump was also calculated. Results show a significant improvement in the equivalent thermal conductivity of the composite samples which are prepared using aluminum hydroxide as binder, over that of zeolite pellet beds. Such composite materials could be used to build adsorption heat pumps with higher specific power and, consequently, with lower investment cost.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cacciola, G. and N. Giordano, “Chemical Processes for Energy Storage and Transmission,”Applied Energy,25, 315–337 (1986).
Cacciola, G., V. Recupero, and G. Restuccia, “Pompe Di Calore and Adsorbimento Di Vapor D'acqua Su Zeolite,”La Termotecnia,41(1), 23–30 (1987).
Cacciola, G., G. Restuccia, H. Mirzaian, and N. Giordano, “Elementi Preformati a Base Di Materiale Adsorbente Solido e Procedimento Per La Loro Preparazione,” Italian Patent Appl., 48591A88, 1988.
Cacciola, G., L. Czepirski, G. Restuccia, and N. Giordano, “Pre-Formed Zeolite Products to be Used in Adsorption Heat Pumps. Part I: Preparation Methodology and Adsorption Measurements,”Adsorption Science & Technology,7(3), 163–171 (1990).
Cacciola, G., A. Hajji, G. Maggio, and G. Restuccia, “Dynamic Simulation of a Recuperative Adsorption Heat Pump,”Energy The Int. J.,18(11), 1125–1137 (1993).
Cacciola, G., G. Restuccia, A. Muller, J.C. Jansen, and H. van Bekkum, “Zeolite Synthesized on Metal for more Efficient Adsorption Machines,”International Absorption Heat Pump Conference 96. Toronto, Sept. 17–20, 1997.
Carslaw, H.S., and J.C. Jaeger,Conduction of Heat in Solids, Clarendon Press Oxford, Oxford, 1959.
Donati, A., A. Lanciani, P. Morabito, P. Rossi, F. Barberis, R. Berti, A. Capelli, and P. Sona, “Evaluation of Thermal conductivity and Diffusivity of Concrete by Means of the Two-Linear-Parallel-Probe Method,”High Temperatures-High Pressures,19, 371–380 (1987).
Douss, N. and F. Menier, “Experimental Study of Cascading Adsorption Cycles,”Chem. Eng. Sci.,44(2), 225–235 (1989).
Guilleminot, J.J., A. Choisier, J.B. Chalfen, S. Nicolas and J.L. Reymonet, “Amélioration Des Transfers Thermiques Dans Les Adsorbeurs a Lits Fixes Consolidés,”Proc. of the Symposium: Solid Sorption Refrigeration, Paris, Nov. 18–20, 1992, pp. 215–200.
Guilleminot, J.J., J.B. Chalfenand and A. Choisier, “Heat and Mass Transfer, Characteristics of Composites for Adsorption Heat Pumps,”Proc. of the International Absorption Heat Pump Conference, New Orleans, Jan. 19–21, 1994, R. Radermacher et al. (Eds.), ASME, New York, AES Vol. 31, pp. 401–406, 1994.
Guilleminot, J.J., J.B. Chalfen, and F. Poyelle, “Transfers de masse et de chaleur dans les Composites Adsorbents Consolides. Influence sur les Performances d'une Pompe a Chaleur a Adsorption Solide,”Proc. of the 19th International Congress of Refrigeration, Vol. IV, pp. 261–268, 1995.
Liù, Z.Y., G. Cacciola, G. Restuccia, and N. Giordano, “Fast Simple and Accurate Measurement of Zeolite Thermal Conductivity,”Zeolites,10, 565–570 (1990).
Outzourhit, A. and J.U. Trefny, “Simple Apparatus for Thermal Conductivity Measurements of Unconsolidated Powders,”Experiment Heat Transfer,7, 319–331 (1994).
Sahnoune, H. and Ph. Grenier, “Measure de la Conductivité Thermique d'une Zéolithe,”The Chem. Eng. J.,40, 45–54 (1989).
Takegoshi, E., S. Imura, Y. Hirasawa, and T. Takenaka, “A Method of Measuring the Thermal Conductivity of Solid Materials by Transient Hot Wire Method of Comparison,”Bull. JSME,25, 395–402 (1982).
van Benthem, G.H.W., G. Cacciola, and G. Restuccia, “Regenerative Adsorption Heat Pump: Optimization of the Design,”Heat Recovery System & CHP,15, 531–544 (1995).
Woodside, W. and J.H. Messmer, “Thermal Conductivity of Porous Media. II Consolidated Rocks,”J. of Applied Physics,32(9), 1699–1706 (1961).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pino, L., Aristov, Y., Cacciola, G. et al. Composite materials based on zeolite 4A for adsorption heat pumps. Adsorption 3, 33–40 (1997). https://doi.org/10.1007/BF01133005
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01133005