Investigating carotenoid loss after drying and storage of

Appendix 2c: Low-cost solar dryers
A/Building of low-cost solar dryers
Example: Lualua, Mozambique
Technical information sheet: Aurelie Bechoff;
Building of dryers: Keith Tomlins and Aurelie Bechoff
Tunnel dryer
Open air
sun dryer
The building of low cost solar dryers involves the following steps:
1. Preparing the ground
2. Laying foundations
3. Putting coverage
4. Making trays
249
Shade dryer
Appendix 2
Technical information sheet
1. Preparing the ground
The area should be chosen as flat as possible. Clear the ground from all bush
shrubs. Orientate your dryers toward the midday sun (South in the Northern
hemisphere or North in the Southern hemisphere). Leave sufficient space
between dryers (about 2 meters) to limit shade effect of one dryer to another.
Place sticks to mark the pegs of dryers. Use string; spirit level and protractor
to measure the appropriate angle for the drying table (the table angle
corresponds to the perpendicular angle to the sun at noon; that is the latitude
on annual measurement). Mark the height of pegs.