K-values of tropical grains.
1987
Kamaruddin A. | Ridwan Thahir | Sutrisno
K-values are one of the parameters in a drying process. They provide information on the rate of drying of certain products and enable one to estimate the time needed to accomplish the drying process. Although extensive data has been accumulated from past studies in foreign countries, there has been limited effort to obtain data on the K-values for tropical grains. The need for such data becomes evident whenever a new dryer design is required to suit local conditions in the tropical countries. A new design is also desired when one is trying to optimize the use of locally available energy sources to operate the machine. Since 1978, the Laboratory of Energy and Rural Electrification has conducted studies to determine the thermophysical properties of tropical agricultural products, particularly those of grains and fruits and vegetables. This paper presents some of the results obtained so far, including the basic methodology used to measure the K-values of several tropical grains, including paddy, corn and soybean. The discussions will cover verification of the measured values and some applications on a biomass-solar energy operated flatbed dryers.
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