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Ingeniare. Revista chilena de ingeniería

versión On-line ISSN 0718-3305

Resumen

MORENO GARCIA, Francisco Ernesto; BANDARRA FILHO, Enio Pedone  y  GUEVARA IBARRA, Dinael. Design and evaluation of an experimental refrigeration system working by solar adsorption. Ingeniare. Rev. chil. ing. [online]. 2018, vol.26, n.4, pp.622-630. ISSN 0718-3305.  http://dx.doi.org/10.4067/S0718-33052018000400622.

This work presents a characterization of a cooling system using solar radiation as the only source of energy to generate the adsorption phenomenon assisted in a stationary flat plate collector. This collector has an area of 1.1m2 working with activated charcoal as adsorbate and using methanol as an adsorbent. The experimental results were compared in two conditions of tests with the objective to cool two liters of water. Temperatures of generation were recorded in the solar collector above 50 °C for solar radiation above 800 [W/m2]. The COP of the system presented values above 0.4, according to isobaric cooling and adsorption stages. Measurements of solar radiation, temperatures of the system were performed, resulting in temperature differences of up to 8.6 °C between the ambient temperature and the cold room. Local radiation samples of up to 1155 [W/m2] were obtained, showing efficiency of the collector up to 75%, at specific periods and 35% at total daily efficiency. Using the Design of Experiments (DOE), through response surfaces, a model of behavior in thermodynamic equilibrium to be used as a reference in futures control systems.

Palabras clave : Adsorption; activated carbon; solar collector; methanol and refrigeration.

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