TY  - JOUR
T1  - Thermal Pyranometer Using the Open Hardware Arduino Platform
AU  - Avallone, Elson
AU  - Mioralli, Paulo César
AU  - Scalon, Vicente Luiz
AU  - Padilha, Alcides
AU  - Oliveira, Santiago Del Rio
PY  - 2018
DA  - March
DO  - 10.5541/ijot.5000209000
JF  - International Journal of Thermodynamics
PB  - Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi
WT  - DergiPark
SN  - 1301-9724
SP  - 1
EP  - 5
VL  - 21
IS  - 1
LA  - en
AB  - Thermal Pyranometers are very importantdevices for evaluating the intensity of solar radiation under differentclimatic conditions. These devices utilize thermal radiation for comparison anddetermination of their efficiency. Because of this wide use associated with thedevelopment of new technologies, a simple and low-cost version of thermalpyranometer has been studied, designed and manufactured. A blackened aluminumdisk is used as a hot junction, and the cold junction is exposed to ambientair. The two terminals are connected to a digital amplifier with output signaldirected to an Arduino board. A device calibration was performed by comparingthe results with a commercial photodiode sensor. Statistical analysis of thecalibration data considering a 99% confidence level leads to an estimatedstandard error of 20.8 W/m². An analysis of its response time also estimatedfrom a dynamic model. This model uses a numerical solution of the energybalance on heat exchange between the aluminum disc and the environment. Theinstrument response time based on the average of the estimates obtained fromthe dynamic model is about 1.5 minutes. Based on these studies it was concludedthat the characteristics of the sensor are adequate for most solar energy testsand the final cost of US $ 60.00 is much lower than the large majority of suchcommercial devices.
KW  - Pyranometer; Radiometer; Thermal sensor; Arduino
CR  - [1]	I. Zanesco and A. Krezinger, “On the threshold of the accuracy of using silicon solar cells to measure global solar irradiance,” in 11th Photovoltaic energy conference, Montreux Swizerland, Montreux - Suíça, 1992.[2]	S. Awasthi, A. Dubey, J. M. Kellar, and O. Mor, “Design and simulation of eletronic instruments for solar energy measurement system,” Int. J. Sci. & Eng. Res., 3, 1, Jan-2012.[3]	H. Vera Luiz, A. J. Busso, and F. Benitez, “Piranómetro fotovoltaico con sistem autónomo de adquisición de datos,” Avances en Energías Renovables y Medio Ambiente, 9, 2005.[4]	I. Zanesco, “Analise e Construçao de um Piranômetro Fotovoltaico,” Dissertação de Mestrado, Universidade Federal do Rio Grande do Sul, Porto Alegre, 1991.[5]	M. A. Martínez, J. M. Andújar, and J. M. Enrique, “A new inexpensive pyranometer for the visible spectral range,” Sensors, 9, 4615–4634, 2009.[6]	D. W. Medugu, F. W. Burari, and A. A. Abdulazeez, “Construction of a reliable model pyranometer for irradiance measurements,” African Journal of Biotechnology, 9, 1719–1725, 2010.[7]	ISO 9847, Solar Energy — Calibration of field pyranometer by comparison to a reference pyranometer. 2013.[8]	ISO 9060, Standard & Pyranometer  Measurement Accuracy. 2012.[9]	W. A. Vilela, “Estudo, desenvolvimento e caracterização de radiômetros para medição da raciação solar,” Tese de Doutorado, Instituto Nacional de Pesquisas Espaciais - INPE, São José dos Campos - SP, 2010.[10]	WMM, “Instruments and observing methodos - Report No 98.” World Meteorological Organization, 2009.[11]	M. et al Krazenerg, “Rastreabilidade de radiômetros para medida da energia solar,” in Meteorologia 2003 - Meteorologia para a vida, Recife - PE, 2006.[12]	M. A. M. Bohórquez, J. M. E. Gómez, E. D. Aranda, M. J. V. Vázquez, and J. M. A. Márquez, “Sistema de instrumentación de bajo coste para la medición de irradiancia en el rango espectral visible,” in XXXII Jornadas de Automática, Sevilla - Espanha, 1, 2011. 1.[13]	S. N. Nwankowo, M. N. Nnabuchi, and J. E. Ekpe, “Construction and characterization of a pyranometer using locally avaliable materials for global solar radiation measurement,” Asian Transactions on Basic and Applied Sciences, 2, 2012.[14]	J. L. Souza and J. F. Escobedo, “Construção de um saldo radiômetro com termopilha de filme fino e avaliação de sua performance,” Revista Brasileira de Meteorologia, 10, 29–36, 1995.[15]	J. F. Escobedo, V. A. Frisina, R. P. Ricieri, and A. P. Oliveira, “Radiômetros solares com termopilhas de filmes finos - I Descrição e custos,” Revista Brasileira de Aplicações de Vácuo, 16,, 1997.[16]	J. M. Gomes, P. M. Ferreira, and A. E. Ruano, “Implementation of an intelligent sensor for measurement and prediction of solar radiation and atmospheric temperature,” in Sensors Journal, IEEE, Floriana - Malta, 2011, 1–6.[17]	E. Avallone, “Avaliação da Eficiência Térmica de um Coletor Solar Tipo Tubo Evacuado  Modificado,” Master Thesis, Universidade Estadual Paulista - Júlio de Mesquita Filho, Campus de Bauru, 2013.[18]	J. A. Duffie and W. A. Beckman, Solar Engineering of Thermal Process, 4a., vol. 1. USA: John Wiley & Sons, 2013.[19]	S. A. Kalogirou, “Solar thermal collectors and applications,” Progress in Energy and Combustion Science, 30, 231–295, 2004.[20]	S. A. Kalogirou, Solar Energy Engineering, 1a., vol. 1. United States of America: British Library Cataloguing-in-Publication, 2009.[21]	P. Berdahl and M. Martin, “Emissivity of clear skies,” Solar Energy, vol. 32, no. 5, p. 663, 1984.[22]	K. G. T. Hollands, T. E. Unny, G. D. Raitby, and L. Konieck, “Free convection heat transfer across inclined air layers,” Trans ASME J. Heat Transfer, 98, 1976.[23]	F. P. Incropera, D. P. Dewit, T. I. Bergman, and A. S. Lavine, Fundamentos de transferência de calor e massa, 6th ed., vol. 1, 1 vols. Rio de Janeiro: LTC - Livros técnicos e científicos Editora Ltda, 2008.[24]	V. L. Scalon and S. D. R. Oliveira, “Theoretical analysis of a flat pyranometer,” presented at the VII SiAT - Simpósio de Análise Térmica, Universidade Estadual Paulista “Júlio de Mesquita Filho,” 4, 2015.
UR  - https://doi.org/10.5541/ijot.5000209000
L1  - https://dergipark.org.tr/en/download/article-file/433022
ER  -