Solar dryer And to study the products using the drying process with solar dryer Using the technology of solar dryer in Thailand. Can be divided according to the solar collector has 3. Collector directly,. Indirect and mixed with the air circulation within the 2 style is natural circulation (Passive system) and forced circulation. (Active system) by the main factor of increasing performance drying with solar radiation is the temperature, speed and the humidity of the air in the system. Including the development of the system to be consistent. And increase the duration of drying heat from solar radiation and, as a result, it is found that the temperature and the intensity of sunlight effect on the reduction rate of moisture of turmeric in drying.
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