What is Falling Rate Period Drying?
The falling rate drying period is a stage in the drying process where the rate of moisture removal from the material decreases over time as the internal moisture content of the material is reduced. During this period, the drying rate is typically controlled by the rate of moisture diffusion within the material, which is slower than the rate of heat and mass transfer at the surface of the material. In this stage, the moisture content of the material decreases more slowly than during the constant rate drying period, as the remaining moisture is located deeper within the material and must diffuse to the surface before it can be removed. The length of the falling rate period depends on the properties of the material being dried, such as its porosity, particle size, and moisture distribution.
How to Calculate Falling Rate Drying Time from Initial to Final Weight of Moisture?
Falling Rate Drying Time from Initial to Final Weight of Moisture calculator uses Falling Rate Drying Time = ((Initial Weight of Moisture for Falling Rate Period-Equilibrium Weight of Moisture)/(Drying Surface Area*Rate of Constant Drying Period))*(ln((Initial Weight of Moisture for Falling Rate Period-Equilibrium Weight of Moisture)/(Final Weight of Moisture for Falling Rate Period-Equilibrium Weight of Moisture))) to calculate the Falling Rate Drying Time, The Falling Rate Drying Time from Initial to Final Weight of Moisture formula is defined as the time taken for drying in the falling rate period based on drying from initial to final weight of moisture for specified drying conditions. Falling Rate Drying Time is denoted by tf symbol.
How to calculate Falling Rate Drying Time from Initial to Final Weight of Moisture using this online calculator? To use this online calculator for Falling Rate Drying Time from Initial to Final Weight of Moisture, enter Initial Weight of Moisture for Falling Rate Period (Mi(Falling)), Equilibrium Weight of Moisture (MEq), Drying Surface Area (A), Rate of Constant Drying Period (Nc) & Final Weight of Moisture for Falling Rate Period (Mf(Falling)) and hit the calculate button. Here is how the Falling Rate Drying Time from Initial to Final Weight of Moisture calculation can be explained with given input values -> 30.09932 = ((10-5)/(0.1*2))*(ln((10-5)/(6.5-5))).