Solar dryer efficiency considering the total drying potential. Application of this potential as a resource indicator in north-western Argentina

Evaluación energética de un deshidratador solar tipo túnel para frutas

“…El concepto de eficiencia del sistema durante el proceso de secado está relacionado principalmente con las condiciones del entorno y del aire ambiente. Este hace referencia al parámetro que relaciona la ganancia de energía por parte del aire atmosférico , conocido también como la tasa de extracción de calor, y la radiación solar total incidente sobre la cámara de secado durante un periodo de tiempo en particular: [15].…”

Development of a sustainable methodology for life-cycle performance evaluation of solar dryers

“…In most of the recently-proposed methodologies for characterizing the performance of solar dryers (Altobelli et al, 2014;López-Vidaña et al, 2013;Singh and Kumar, 2012), parameters, such as the pick-up efficiency (g p ), the drying efficiency (g d ), the Nomenclature d discount rate (%) LC life-cycle DPBP discounted payback period (years) F v future value of energy FCV future consumption value (J) FPV future production value (J) P v present value of energy (J) NPVEER net present value to embodied energy ratio IRR internal rate of return (%) MARR minimum attractive rate of return (%) MC moisture content (kg kg À1 ) n time into the kiln service life E modulus of elasticity (Pa) NPV net present value (J) Q radiation energy flow rate (W) A surface area (m 2 ) I T total solar radiation (W m À2 ) G cb beam radiation R b ratio of the beam radiation on a tilted surface to that on a horizontal surface (Singh and Kumar, 2012). In Altobelli et al (2014), a model of free water evaporation in a forced solar dryer, where the total solar radiation and the saturation deficit of ambient air were considered as the driving force for drying processes, was described.…”

“…In Altobelli et al (2014), a model of free water evaporation in a forced solar dryer, where the total solar radiation and the saturation deficit of ambient air were considered as the driving force for drying processes, was described.…”

Simulation of a passive solar dryer to charqui production using temperature and pressure networks

“…The charqui temperature node has the same heat transfer coefficients mentioned above and solar radiation gain similar to Eq. (10), except that the solar collection area is A ch , the charqui area.The energy required to convert water into steam with speed _ m w is, l eV _ m w where l ev (kJ kg À1 ) is the water evaporation latent heat (Altobelli et al, 2014). Once the evaporation occurs, and steam is incorporated, the air gains energy.…”