- Dryer Sizes:
There is a limitation to the size of a dryer unit, especially those suitable for viable micro and small business. Larger units lead to construction, transportation, installation and operational constraints.
- Timing of drying process:
Even with solar dryers, the drying process is considerably slowed down during cloudy or rainy season.
- Quality control of the dried product:
Quality of the dried produce has an influence on the marketing capability and the income, since higher prices can be achieved by higher quality. For products to compete in international and high end local markets, a very strict quality control regime must be maintained.