Low-cost irradiance sensors for irradiation assessments inside tree canopies.

Muñoz García, Miguel Angel; Melado Herreros, Angela; Balenzategui, José Lorenzo y Barreiro Elorza, Pilar (2014). Low-cost irradiance sensors for irradiation assessments inside tree canopies.. "Solar Energy", v. 103 ; pp. 143-153. ISSN 0038-092X. https://doi.org/10.1016/j.solener.2014.01.027.

Descripción

Título: Low-cost irradiance sensors for irradiation assessments inside tree canopies.
Autor/es:
  • Muñoz García, Miguel Angel
  • Melado Herreros, Angela
  • Balenzategui, José Lorenzo
  • Barreiro Elorza, Pilar
Tipo de Documento: Artículo
Título de Revista/Publicación: Solar Energy
Fecha: Mayo 2014
Volumen: 103
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Ingeniería Rural [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The solar irradiation that a crop receives is directly related to the physical and biological processes that affect the crop. However, the assessment of solar irradiation poses certain problems when it must be measured through fruit inside the canopy of a tree. In such cases, it is necessary to check many test points, which usually requires an expensive data acquisition system. The use of conventional irradiance sensors increases the cost of the experiment, making them unsuitable. Nevertheless, it is still possible to perform a precise irradiance test with a reduced price by using low-cost sensors based on the photovoltaic effect. The aim of this work is to develop a low-cost sensor that permits the measurement of the irradiance inside the tree canopy. Two different technologies of solar cells were analyzed for their use in the measurement of solar irradiation levels inside tree canopies. Two data acquisition system setups were also tested and compared. Experiments were performed in Ademuz (Valencia, Spain) in September 2011 and September 2012 to check the validity of low-cost sensors based on solar cells and their associated data acquisition systems. The observed difference between solar irradiation at high and low positions was of 18.5% ± 2.58% at a 95% confidence interval. Large differences were observed between the operations of the two tested sensors. In the case of a-Si cells based mini-modules, an effect of partial shadowing was detected due to the larger size of the devices, the use of individual c-Si cells is recommended over a-Si cells based mini-modules.

Más información

ID de Registro: 23045
Identificador DC: http://oa.upm.es/23045/
Identificador OAI: oai:oa.upm.es:23045
Identificador DOI: 10.1016/j.solener.2014.01.027
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0038092X14000450
Depositado por: Memoria Investigacion
Depositado el: 14 Mar 2014 16:13
Ultima Modificación: 31 May 2016 22:30
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