Direct tracking error characterization on a single-axis solar tracker

F Sallaberry, R Pujol-Nadal, M Larcher… - Energy Conversion and …, 2015 - Elsevier
The solar trackers are devices used to orientate solar concentrating systems in order to
increase the focusing of the solar radiation on a receiver. A solar concentrator with a …

Estimation of the influence of different incidence angle modifier models on the biaxial factorization approach

JD Hertel, V Martinez-Moll, R Pujol-Nadal - Energy Conversion and …, 2015 - Elsevier
To minimize the experimental effort of assessing biaxial incidence angle characteristics of
solar collectors with complex geometries, current testing standards (EN 12975-2, ASHRAE …

Optical losses due to tracking error estimation for a low concentrating solar collector

F Sallaberry, AG de Jalón, JL Torres… - Energy Conversion and …, 2015 - Elsevier
The determination of the accuracy of a solar tracker used in domestic hot water solar
collectors is not yet standardized. However, while using optical concentration devices, it is …

Optical and thermal characterization of a variable geometry concentrator using ray-tracing tools and experimental data

R Pujol-Nadal, V Martínez-Moll, F Sallaberry… - Applied Energy, 2015 - Elsevier
Ray-tracing tools are commonly used to optically characterize solar concentrators, but the
International Standards used to certify collectors for heating do not allow the use of these …

Collaborative distributed sun-tracking control system for building integration with minimal plant area and maximum energy-conversion efficiency

B Alorda, R Pujol-Nadal, G Rodriguez-Navas… - International Journal of …, 2015 - Elsevier
This paper presents a collaborative distributed sun-tracking control system for a novel Fixed
Mirror Solar Concentrator (FMSC) structure, which increases the energy-conversion …

Toward a standard testing methodology for solar thermal collectors with variable-geometry: The direct radiation incidence angle modifier issue

F Sallaberry, R Pujol-Nadal, AG de Jalón… - Solar Energy, 2015 - Elsevier
Solar thermal energy is able to provide a considerable fraction of the medium-temperature
energy demand and should be more widely used in specific industrial sectors in 100–250° C …

Influence of thermal losses on the incidence angle modifier factorization approach

JD Hertel, V Martinez-Moll, R Pujol-Nadal - Solar Energy, 2016 - Elsevier
Solar thermal applications for industries must be designed to operate at high temperature
levels; however, the thermal dependency of the accuracy of the incidence angle modifier …

[PDF][PDF] Experimental investigation and exergy analysis of an air heater with a solar concentrator used for drying processes.

H Karoua, A Moummi, A Hamidat… - … Journal of Heat & …, 2018 - researchgate.net
Received: 20 Febraury 2018 Accepted: 5 September 2018 In this paper, a solar air heater
collector is developed and investigated. A concentrating feature of Linear Fresnel Reflector …

Incidence-Angle- and Wavelength-Resolved Ray-Tracing Simulations of a Linear Fresnel Collector Using the In-House Software otsun

JD Hertel, F Bonnín-Ripoll… - Journal of Solar …, 2018 - asmedigitalcollection.asme.org
The set of optical models that is implemented in ray-tracing software determines the
accuracy of its output. A sensitivity analysis was carried out using a powerful in-house …

[HTML][HTML] Study on the general applicability of the collector efficiency model to solar process heat collectors

JD Hertel - 2019 - dialnet.unirioja.es
Según varios estudios, la capacidad instalada de captadores solares térmicos para proveer
calor en procesos industriales se va a incrementar significativamente a lo largo de las …