Abstract

A new facility known as Heliostat Test Field has been developed in Mexico. It consists of a solar tower, a laboratory, and 16 heliostats. Three different optical tests have been implemented for the evaluation of heliostats at this installation: sun tracking test, reflected spot test, and deflectometry test. These tests allow the evaluation of tracking, and slope errors of the heliostats. In particular, the later provides detailed slope maps of the reflecting mirrors

Heliostat Testing at a New Facility in Sonora, Mexico

Camilo A. Arancibia-Bulne s, Manuel I. Peña-Cruz, David Marroquín-García, Rafael E. Cabanillas, Carlos A. Pérez-Rábago, David Riveros-Rosas, Jesús F. Hinojosa and Claudio A. Estrada

Publicado en Memorias de Congresos

Abstract

Due to water pollution at urban as well as industrial and rural level, there exists the need to introduce and improve new alternative technologies to traditional methods for waste water treatment. It is important that new technologies must be economic, effective and environment friendly. The above mentioned alternative technologies are in this case the heterogeneous photocatalysis with TiO2 and photo-Fenton processes which use the solar radiation as exciting source to produce species highly oxidative that can degrade the organic matter present in polluted water. This paper describes the construction of a Photocatalytic Solar Plant located at the installations of the Energy Research Center of the National University of Mexico (CIE-UNAM), which is composed by different photocatalytic reactor integrated with CPC solar concentrators whose concentration varies between 1 and 2 suns. The photoreactors and equipped with temperature, pH, COD and DO online sensors. Moreover, the plant counts with an analytical laboratory equipped with a Total Organic Carbon(TOC) analyzer and a UV-VIS spectrophotometer. In addition, immobilized TiO2 photocatalysts on glass pipes Pyrex® were prepared, which lately were introduced into the photocatalytic reactor. The catalyst immobilization on glass pipes eliminates in an effective way the recovery process of powder photocatalysts, and also saves time and work costs. The technical feasibility and performance of the photocatalytic degradation of the plaguicide carbaryl at pilot level have been here studied.

Ivan SalgadoTránsito, Antonio E. Jiménez González, Claudio A. Estrada Gasca, Camilo Arancibia Bulnes, Rogelio Morán Elvira, Carlos Antonio Pineda Arellano, Eduardo Iragorri, Cesar Pérez Franco and Emmanuel Hernández Martínez

Publicado en Memorias de Congresos

L. A. Díaz-Félix, M. Escobar-Toledo, J. Waissman, N. Pitalúa-Díaz, C. A. Arancibia-Bulnes

Publicado en Memorias de Congresos
Miércoles, 13 Mayo 2015 19:37

Dynamic drift compensation for heliostats

C. Iriarte-Cornejo, C. A. Arancibia-Bulnes, J. Waissman, R. E. Cabanillas, C. A. Estrada

Publicado en Memorias de Congresos

C. A. Arancibia-Bulnes, R. Peón-Anaya, D. Riveros-Rosas, J.J. Quiñones, R. E. Cabanillas, C.A. Estrada

Publicado en Memorias de Congresos

Abstract

In the solar central tower systems, receivers that allow the absorption of concentrated sunlight are used to transfer thermal energy into a fluid. In the design of solar thermal receivers, several aspects are to be considered: reliability of the material surface, efficient heat transfer and the reduction of thermal losses. Therefore, volumetric thermal receivers have great potential for the production of thermal energy and have become an attractive option. This study numerically analyzes behavior of temperature and velocity profiles in a volumetric receiver. Temperature and velocity fields in several depths of the receiver are analyzed; this study provides preliminary results useful for a future experimental study. A parametric study of effects such a variation of velocity at the inlet of the receptor and two different boundary conditions are presented.

Transferencia de calor en receptores volumétricos para sistemas de energía solar térmica

Norma Rodríguez-Muñoz, N. A., Carlos A. Pérez-Rábago, Fernando Hinojosa-Palafox, Claudio A. Estrada.

Publicado en Memorias de Congresos

Videos HoSIER

Entrevista HoSIER Factor Ciencia Canal Once (14/12/2015)