Low-cost sale of used corn dryer Dryer Used Used wheat paddy dryer

1.4 Data table method by thermodynamic calculation, the conversion coefficient parameters change under various conditions tabulated, converted and then inserted into the law, standards are given two forms, a conversion table is atmospheric conditions, and the other is food condition Conversion table, find the two coefficients from the table, its product is the total conversion coefficient. Based on the in-depth analysis and study of existing research results, based on the analysis and discussion of the conversion of standard conditions, the calculation method and conditions of use reduction coefficient of various models and different drying grain drying process. 2 drying parameters determined conversion standard conditions in order to compare the performance of grain dryer drying under different conditions, you must specify a recognized standard conditions; non-standard conditions in the drying process must be measured data are converted during the drying operation or testing to standard conditions before it can be relatively dry performance. The so-called standard conditions generally include precipitation rate, ambient temperature, humidity, hot temperatures and drier types. Currently the standard conditions developed in different countries are different (see Table 1). British standard conditions as early wheat dried to 20% moisture, final moisture Qiao%, ambient temperature 20 ℃, humidity of 80%. Heilongjiang Province, the required standards of dried corn for precipitation rate of 5% (20% a coincidence%), hot air temperature 90 ℃, ambient temperature of 20 ℃, relative humidity of 60%. France provides for different seasons different standard conditions. Russian regulations precipitation rate of 6%, the ambient temperature ro ℃. No grain dryer performance of the commuted national standards. Some units are studying it, who may soon be released in parallel with national standards. Conversion factor of three different conditions of food grain categories such as corn, wheat, rice drying characteristics are different, such as equilibrium moisture content, thin layer drying equation, specific heat, latent heat, resistance to air flow, bulk density, etc., converted It must consider a variety of grain drying capacity conversion coefficient.