Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Development of model based sensors for the supervision of a solar dryer
Year:2011
Research Areas
  • Agriculture
Information
Abstract
Solar dryers are increasingly used in developing countries as an alternative to drying in open air, however the inherent variability of the drying conditions during day and along year drive the need for achieving low cost sensors that would enable to characterize the drying process and to react accordingly. This paper provides three different and complementary approaches for model based sensors that make use of the psychrometric properties of the air inside the drying chamber and the temperature oscillations of the wood along day. The simplest smart sensor, Smart-1, using only two Sensirion sensors, allows to estimate the accumulated water extracted from wood along a complete drying cycle with a correlation coefficient of 0.97. Smart-2 is a model based sensor that relays on the diffusion kinetics by means of assesing temperature and relative humidity of the air inside the kiln. Smart-2 model allows to determine the diffusivity, being the average value of D for the drying cycle studied equal to 5.14 × 10?10 m2 s?1 and equal to 5.12 × 10?10 m2 s?1 for two experiments respectively. The multidistributed supervision of the dryer shows up the lack of uniformity in drying conditions supported by the wood planks located in the inner or center of the drying chamber where constant drying rate kinetics predominate. Finally, Smart-3 indicates a decreasing efficiency along the drying process from 0.9 to 0.2.
International
Si
JCR
Si
Title
Computers And Electronics in Agriculture
ISBN
0168-1699
Impact factor JCR
1,846
Impact info
Datos JCR del año 2011
Volume
78
http://dx.doi.org/10.1016/j.compag.2011.07.004
Journal number
2
From page
167
To page
175
Month
SEPTIEMBRE
Ranking
Participants
  • Autor: Eva Cristina Correa Hernando (UPM)
  • Autor: Francisco Javier Arranz Saiz (UPM)
  • Autor: Belen Diezma Iglesias (UPM)
  • Autor: Eduardo Juliá (Grupo de Energías Renovables, Facultad de Mecánica, Universidad de Oriente, Avenida Las Américas, Santiago de Cuba, Cuba)
  • Participante: Robla José Ignacio (Laboratorio de Tecnología de Sensores, Centro Nacional de Investigaciones Metalúrgicas, Consejo Superior de Investigaciones Científicas)
  • Autor: Luis Ruiz Garcia (UPM)
  • Autor: Javier García-Hierro (Laboratorio de Tecnología de Sensores, Centro Nacional de Investigaciones Metalúrgicas, Consejo Superior de Investigaciones Científicas)
  • Autor: Pilar Barreiro Elorza (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: LPF-TAGRALIA: Técnicas Avanzadas en Agroalimentación
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)