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Cycle stability of sorption materials and composites for the use in heat pumps and cooling machines

Henninger, S.K.; Munz, G.; Ratzsch, K.-F.; Schossig, P. - In: Renewable Energy 36 (2011) 11, pp. 3043-3049

Thermally driven adsorption chillers and heat pumps are a very promising approach toward an efficient use of energy as …

Persistent link: https://www.econbiz.de/10010806594

Towards a one tonne per day solar ice maker

Critoph, R.E. - In: Renewable Energy 9 (1996) 1, pp. 626-631

There is a need for heat operated refrigeration systems in areas of the world which have a warm climate and also have no firm electricity supply. Research is underway on carbon - ammonia refrigerators driven by the heat of steam condensing in a thermosyphon heat pipe. The heat source can be...

Persistent link: https://www.econbiz.de/10010806874

Regeneration and efficiency characterization of hybrid adsorbent for thermal energy storage of excess and solar heat

Dicaire, Daniel; Tezel, F. Handan - In: Renewable Energy 36 (2011) 3, pp. 986-992

Adsorption Thermal Energy Storage (TES) is a promising technology for long term thermal energy storage of excess and … solar heat. By using the exothermic reversible adsorption process, excess heat from an incinerator or solar heat from the … this study, a lab scale high throughput open loop forced air adsorption TES has been built. A series of adsorption …

Persistent link: https://www.econbiz.de/10010806938

Research and development of consolidated adsorbent for adsorption systems

Wang, S.G.; Wang, R.Z.; Li, X.R. - In: Renewable Energy 30 (2005) 9, pp. 1425-1441

Adsorption heat pump and refrigeration systems are noiseless, non-corrosive and environment friendly. For these reasons … adsorption chillers due to their various economic and impressive environmental benefits, enabling solar energy or waste heat to … paper provides a literature review on current progress of consolidated adsorbent for adsorption systems. A number of …

Persistent link: https://www.econbiz.de/10010807007

Improved lumped-capacitance model for heat and mass transfer in adsorbed gas discharge operations

Sphaier, L.A.; Jurumenha, D.S. - In: Energy 44 (2012) 1, pp. 978-985

An improved lumped-capacitance formulation for heat and mass transfer in adsorbed gas discharge operations has been developed. The formulation is obtained by employing the Coupled Integral Equations Approach (CIEA) for reducing one-dimensional transport equations for adsorbed gas storage in a...

Persistent link: https://www.econbiz.de/10010809139

Adsorptive Removal of Dye from Industrial Effluents Using Natural Iraqi Palygorskite Clay as Low-Cost Adsorbent

Taha, Dakhil Nasir; Isra'a Sadi Samaka; Mohammed, Luma Ahmed - In: Journal of Asian Scientific Research 3 (2013) 9, pp. 945-955

aqueous solution. Batch adsorption studies are carried out by observing effect of amount of adsorbent dose, contact time, pH …, initial concentration of ( BR-2) and particle size of adsorbent on the adsorption capacity of the adsorbent were studied …. Adsorption data fits the Langmuir and Freundlich adsorption isotherms. The calculated value of the Langmuir parameter for …

Persistent link: https://www.econbiz.de/10010727651

Comparison of split-operator methods for solving coupled chemical non-equilibrium reaction/groundwater transport models

Barry, D.A.; Bajracharya, K.; Crapper, M.; Prommer, H.; … - In: Mathematics and Computers in Simulation (MATCOM) 53 (2000) 1, pp. 113-127

Numerical models of reactive solute transport in groundwater are often solved using an approximate two-step approach that separates the transport and reaction processes. Even though the transport and reaction steps are split, using a novel formulation it is possible to pose the reaction step in...

Persistent link: https://www.econbiz.de/10010750188

Kinetic models of self-organization effects in lattice systems

Dubrovskii, V.G.; Cirlin, G.E.; Bauman, D.A.; Kozachek, V.V. - In: Physica A: Statistical Mechanics and its Applications 260 (1998) 3, pp. 349-373

A non-linear model for time-dependent occupation of lattice gas sites is studied. A self-consistent approximation for the diffusion operator is proposed and studied in discrete and continual forms. It is shown that self-organization effects in the spinodal region lead to a spontaneous...

Persistent link: https://www.econbiz.de/10010871627

Reversible adsorption on a random site surface

Oleyar, C.; Talbot, J. - In: Physica A: Statistical Mechanics and its Applications 376 (2007) C, pp. 27-37

We examine the reversible adsorption of hard spheres on a random site surface in which the adsorption sites are … is at least one diameter away. We use a numerical method to obtain the adsorption isotherm, i.e. the number of adsorbed … exactly in the limits of low and high site density. An approximate theory for the adsorption isotherms, valid at low site …

Persistent link: https://www.econbiz.de/10010871847

Anomalous transport in activated carbon porous samples: power-law trapping-time distributions

Drazer, G; Rosen, M; Zanette, D.H - In: Physica A: Statistical Mechanics and its Applications 283 (2000) 1, pp. 181-186

a continuous-time random-walk approach, establishing a relation between the waiting time distribution and the adsorption …

Persistent link: https://www.econbiz.de/10010872218