Equilibrium moisture content as a control parameter for a meadow grass drying process in a barn
2000
Stencl, J. (Mendel Univ. of Agriculture and Forestry, Brno (Czech Republic))
The paper presents control algorithms for near ambient air drying of the fresh grass Festuca pratensis on grates. The depth of layer of the material stored was 1.2-1.5 m. No moisture condensation appeared during drying tests. Major factors controlling the drying process through fan operation on/off, i.e. near ambient air temperature, relative air humidity, temperature of the material stored, were continuously tested in real time. Another control variable was equilibrium moisture content of the grass hay, presented in graphs as water sorption isotherms. The predeterminated maximum temperature of forage in a barn was 37 deg C
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