DRYING OF MEDICINAL PLANTS IN A PLASTIC-HOUSE TYPE SOLAR DRYER
A solar heated dryer in modular design has been developed at the Institute for Agricultural Engineering in the Tropics and Subtropics of Hohenheim University. The roof of a standard plastic film covered greenhouse is used as solar air heater area. A batch dryer has been installed inside the greenhouse. Different medicinal plants have been dried in a high quality with this type of dryer. A comparative economic evaluation showed, that the plastic-house type solar, dryer is economically more efficient than the conventional drying system, as soon as supplementary heating is used.
MÜLLER, J., CONRAD, T., TEŠIC, M. and SABO, J. (1993). DRYING OF MEDICINAL PLANTS IN A PLASTIC-HOUSE TYPE SOLAR DRYER. Acta Hortic. 344, 79-85
Solar energy, medicinal plants, drying, economics, unit costs of solar drying