Proceedings of the 1986 International Congress on Renewable Energy Sources. Feasibility of using a flat plate solar collector as a hot air source in drying processes. International Congress on Renewable Energy Sources [18-23 Mayo 1986, Madrid].
The possibility of using an air flat plate solar collector in drying systems is studied. For this study the performance of an air solar collector has been simulated using a mathematical model. This simulation has been carried out for an average day in the month of July in Madrid (Ciudad Universitaria). The collector overall energy loss coefficient per unit area, the total energy collected by the collector and the outlet air temperature have been studied as a function of the total collector air flow rate and the collector area. The simulation has been carried out for air flow rates ranging from 2000 to 15000 Kg/h and for collector areas from 10 to 50 m2. The overall energy loss coefficient for a fixed collector area decreases as the air flow rate increases and increases with the collector area. The collected energy increases with the air flow rate, tending to a limit value which is proportional to the collector area. The outlet air, temperature reaches its maximum at aproximately 2.00 p.m. (solar time), and this maximun value increases as the air flow rate decreases. All this information shows the possibility of using this collector as a generator of hot air in a drying system and let us know the capacity of drying that is possible to obtain from it.. ABSTRACT. METHOD. RESULTS AND DISCUSSIONS. Overall collector heat loss coefficient study. The total energy collected. Outlet air temperature. Feasibility of using the collector as a hot air source in drying processes. ACKNOWLEDGEMENTS. REFERENCES.
Ministerio de Ambiente y Energía. Secretaría de Planificación del Sub-Sector Energía - Centro de Información de Energía y Ambiente, CIENA
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