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In this study, a new type of sorption process was developed using activated carbon (AC) as a porous host to carry LiCl. A silica solution (SS) and expanded natural graphite treated with sulfuric acid (ENG-TSA) were added to increase heat transfer and mechanical strength of the composite. Thermal conductivities of the samples were measured using the Transient Plane Source (TPS) technique. Results found higher thermal conductivities directly correlated to larger ...
The potential for the use of multi-walled carbon nanotubes (MWCNTs) for the adsorption of ammonia in solid-gas adsorption refrigeration applications has been investigated by experimental determination of ammonia adsorption properties, as well as the thermal conductivity of a composite adsorption material. In addition to this, two models for estimating the adsorption of ammonia on MWCNTs were evaluated. It was determined that the adsorption amount of ammonia on MWCNTs at equilibrium ...
Consolidated water sorbents with varying densities were prepared by adding expanded graphite treated with sulphuric acid to activated carbon-lithium chloride composites for use as a lab-scale prototype for thermal energy storage. The sorption reactor prototype that was designed was unable to reach the 1 kWh heat storage target. Further research will be done with the goal of developing a 15 kWh reactor which would be capable of meeting the heating demand of ...
Expanded graphite (EG)/paraffin composite materials were prepared with the weight % of EG varying from 0 to 10%. It was found that the addition of EG to paraffin greatly improved the thermal conductivity of the material. The melting and freezing points of the PCM were compared to those of the pure paraffin. Also the heat storage/retrieval rates were studied and demonstrated improved properties....
