Abstract
This chapter describes the design and operation of solar agricultural dryers that are used to dry a variety of crops all over the Caribbean region. They range in capacity from a large dryer for ten tonnes of hay, through one for seven tonnes of onions, to small wire basket dryers for 10 kg of sorrel. Solar dryers with a capacity of over a tonne need to have mechanically driven fans for air circulation, which are powered by mains electricity whenever it is available. They are economically viable as long as they do not have to compete with dryers fuelled by cheap natural gas. In isolated communities, solar energy is the only heat source that can be used to dry low-cost agricultural products economically. Solar dryers can therefore be a part of the economic lifeline for farmers in these communities.
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