:Extention of Schumann's Theory to the Case of Heat and Mass Transfer
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概要
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A compact analytical expression was obtained for aeration cooling of deep bed of high moisture rough rice, after extention of Schumann's theory to the case of heat and mass transfer.The equations obtained in this paper (Eqs. (10), (11)) are based on the following new assumptions. (1) The heat rate transferred between grain particles and air is proportional to difference between enthalpy of saturation steam at grain temperature and air enthalpy. (2) The relation between enthalpy and temperature for a saturated condition is approximated by a linear function. (3) The increase of air enthalpy is equal to the decrease of sensible heat of grain particles. These equations formally correspond to Schumann's equations, and so, it is convenient to apply the analyticall solution and the calculated chart.The calculated results were in satisfactory agreement with the experimental values. And the availability of this analytical method was confirmed.
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