How to cite: Jiménez, S.; Carrillo, V.; Alvarado, M., Swimming pool heating systems: a review of applied models, TECCIENCIA, Vol. 10 No. 19., 17-26, 2015 Bogotá, Colombia, ma.al.al.be@hotmail.com Received: 24-06-2015 Accepted: 23-07-2015, Available online: 03-08-2015 AbstractSwimming pool heating that is both efficient and ecological has become increasingly important to the development of new technologies and initiatives to protect the environment. This article, therefore, outlines previous research on the subject, acquired primarily from secondary sources and filtered based on criteria such as relevance, credibility, consistency, and applicability. Our goal is to provide an overview of the current literature and point out less-developed areas where research could be expanded. The results of the various studies suggest a widespread disagreement over calculating evaporation and make clear the need to generate integrative models that standardize this calculation.Keywords: heating, swimming pools, modeling, verification. ResumenLa climatización de piscinas de manera eficiente y ecológica aumenta en relevancia con el pasar del tiempo, debido al desarrollo de nuevas tecnologías e iniciativas de protección al medio ambiente. Por estas razones, este artículo describe investigaciones desarrolladas sobre el tema, adquiridas principalmente de fuentes secundarias y filtradas sobre criterios de selección sobre su relevancia, credibilidad, coherencia y aplicabilidad, para establecer un panorama sobre el estado del arte actual y sugerir la profundización de la investigación sobre las áreas que presenten menor desarrollo. Los resultados de los diferentes estudios sugieren una inconformidad generalizada sobre el cálculo de la evaporación y la necesidad por generar modelos integradores que estandaricen su cálculo.

En este documento, se estimó el coeficiente promedio de transferencia de calor por convección natural sobre la superficie de una esfera de cobre caliente que se enfría al aire ambiental. Experimentalmente, se obtuvieron los valores de 17.4 W/m2K y de 18.62 W/m2K. Para comparar, se calculó el valor de 15.03 W/m2K con las correlaciones empíricas de la literatura especializada. Los coeficientes estimados presentan un buen acuerdo con los publicados en la literatura. También, se determinaron los campos escalares transitorios de temperatura por medio de cuatro experimentos computacionales, para determinar cuál se acercaba más al proceso real de enfriamiento. Las temperaturas finales de la esfera concuerdan bien con la temperatura final medida experimentalmente.

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The current development of renewable energies has originated a number of new structural typologies that are the physical support of the energy production systems. Photovoltaic energy is a very mature source and it is obtained using rows of panels implemented in a longitudinal grillage. Many studies have been carried out in the past with an aim to improve the capacity to obtain electrical power, but another important issue is the need to guarantee the performance of these industrial facilities under the phenomena induced by the turbulent wind flow, taking into account the fact that they are usually built in wide open spaces. This paper describes an extensive research carried out on two configurations of solar trackers by experimental and computational methods. The former was composed of a number of tests of reduced models of segments of the solar trackers, which were carried out in an aerodynamic wind tunnel. The latter consisted of a series of structural analyses worked out through a finite element model of the full panel subjected to aerodynamic and aeroelastic loads. Several angles of attack of the wind flow and a wide range of wind speeds were included in the study. This approach allowed to clearly evaluate the structural and dynamic performance of both the configurations of solar trackers under the most important wind-induced phenomena such as vortex shedding, torsional divergence, and flutter. The paper relates the phases of the study and informs about the more relevant numerical results obtained in the experiments and the computer analysis.