Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
PERFORMANCE COMPARISON OF A SOLAR THERMAL AND A PHOTOVOLTAIC ENERGY SOURCE TO POWER A DESICCANT DRYING SYSTEM
Submission Author:
Bruno Carneiro , CE
Co-Authors:
Bruno Carneiro, Maria Eugenia V. da Silva, Francisco Nivaldo Aguiar Freire
Presenter: Bruno Carneiro
doi://10.26678/ABCM.COBEM2019.COB2019-1045
Abstract
The theoretical study compares the performance of the solar energy utilization, on a solar air heating system and on a photovoltaic (PV) system, to power a drying testbench. The objective is to evaluate the efficiency of each system when supplying hot air at certain temperatures at the inlet of a desiccant wheel on the drying system. The testbench is composed of a desiccant wheel, with two separate ducts (process and regeneration) in order to attend the parameters of optimum adsorption at the wheel, in which air heating is provided by a bank of electrical resistances. The energy supply to power the drying system is compared with an off-grid PV system and a flat plate solar collector for air heating. System designs present the required number of PV modules and the solar fraction covered by solar air collector according to the monthly average solar radiation data at Fortaleza, Brazil. The comparison shows that, with a single solar collector from the module described, the solar fraction is 0.73 of the air heating at 50 °C, 0.51 at 71.5 °C and 0.40 at 91 °C.
Keywords
drying, Desiccant, photovoltaics, Solar Collector
