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The Drying Surface Area is the total area in the drying mass transfer operation i.e. exposed in contact with the drying medium. Check FAQs
A=(Mc-MEqtfNc)(ln(Mc-MEqMf(Falling)-MEq))
A - Drying Surface Area?Mc - Critical Weight of Moisture?MEq - Equilibrium Weight of Moisture?tf - Falling Rate Drying Time?Nc - Rate of Constant Drying Period?Mf(Falling) - Final Weight of Moisture for Falling Rate Period?

Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period Example

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Here is how the Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period equation looks like with Values.

Here is how the Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period equation looks like with Units.

Here is how the Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period equation looks like.

0.1124Edit=(11Edit-5Edit37Edit2Edit)(ln(11Edit-5Edit6.5Edit-5Edit))
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Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period Solution

Follow our step by step solution on how to calculate Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period?

FIRST Step Consider the formula
A=(Mc-MEqtfNc)(ln(Mc-MEqMf(Falling)-MEq))
Next Step Substitute values of Variables
A=(11kg-5kg37s2kg/s/m²)(ln(11kg-5kg6.5kg-5kg))
Next Step Prepare to Evaluate
A=(11-5372)(ln(11-56.5-5))
Next Step Evaluate
A=0.112402245496207
LAST Step Rounding Answer
A=0.1124

Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period Formula Elements

Variables
Functions
Drying Surface Area
The Drying Surface Area is the total area in the drying mass transfer operation i.e. exposed in contact with the drying medium.
Symbol: A
Measurement: AreaUnit:
Note: Value should be greater than 0.
Critical Weight of Moisture
The Critical Weight of Moisture is the amount of moisture present in the solid at which the constant rate drying period ends and the falling period starts at the given conditions.
Symbol: Mc
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
Equilibrium Weight of Moisture
The Equilibrium Weight of Moisture is the amount of moisture in kg present in the solid that is in equilibrium with the solid for the given drying conditions.
Symbol: MEq
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
Falling Rate Drying Time
The Falling rate drying time is the time taken for drying operation in the falling rate period.
Symbol: tf
Measurement: TimeUnit: s
Note: Value should be greater than 0.
Rate of Constant Drying Period
The Rate of Constant Drying Period is the rate of drying that takes place for a given set of drying conditions in the constant rate period.
Symbol: Nc
Measurement: Mass FluxUnit: kg/s/m²
Note: Value should be greater than 0.
Final Weight of Moisture for Falling Rate Period
The Final Weight of Moisture for Falling Rate Period is the amount of moisture in kg present in the solid after the completion of drying operation.
Symbol: Mf(Falling)
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
ln
The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function.
Syntax: ln(Number)

Other Formulas to find Drying Surface Area

​Go Drying Surface Area based on Initial to Critical Moisture Content for Constant Rate Period
A=WSXi(Constant)-XctcNc
​Go Drying Surface Area based on Initial to Critical Weight of Moisture for Constant Rate Period
A=Mi(Constant)-MctcNc
​Go Drying Surface Area based on Initial to Final Moisture Content for Constant Rate Period
A=WSXi(Constant)-Xf(Constant)tcNc
​Go Drying Surface Area based on Initial to Final Weight of Moisture for Constant Rate Period
A=Mi(Constant)-Mf(Constant)tcNc

Other formulas in Drying from Critical to Final Moisture category

​Go Total Drying Time based on Constant Drying Time and Falling Drying Time
t=tc+tf
​Go Constant Drying Time from Initial to Critical Moisture Content
tc=WS(Xi(Constant)-Xc)(ANc)
​Go Constant Drying Time from Initial to Critical Weight of Moisture
tc=Mi(Constant)-McANc
​Go Critical Moisture Content based on Initial Moisture Content for Constant Rate Period
Xc=Xi(Constant)-(AtcNcWS)

How to Evaluate Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period?

Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period evaluator uses Drying Surface Area = ((Critical Weight of Moisture-Equilibrium Weight of Moisture)/(Falling Rate Drying Time*Rate of Constant Drying Period))*(ln((Critical Weight of Moisture-Equilibrium Weight of Moisture)/(Final Weight of Moisture for Falling Rate Period-Equilibrium Weight of Moisture))) to evaluate the Drying Surface Area, The Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period formula is defined as the drying surface area required for drying from critical to final weight of moisture in the falling rate period for the specified drying conditions. Drying Surface Area is denoted by A symbol.

How to evaluate Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period using this online evaluator? To use this online evaluator for Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period, enter Critical Weight of Moisture (Mc), Equilibrium Weight of Moisture (MEq), Falling Rate Drying Time (tf), Rate of Constant Drying Period (Nc) & Final Weight of Moisture for Falling Rate Period (Mf(Falling)) and hit the calculate button.

FAQs on Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period

What is the formula to find Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period?
The formula of Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period is expressed as Drying Surface Area = ((Critical Weight of Moisture-Equilibrium Weight of Moisture)/(Falling Rate Drying Time*Rate of Constant Drying Period))*(ln((Critical Weight of Moisture-Equilibrium Weight of Moisture)/(Final Weight of Moisture for Falling Rate Period-Equilibrium Weight of Moisture))). Here is an example- 0.112402 = ((11-5)/(37*2))*(ln((11-5)/(6.5-5))).
How to calculate Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period?
With Critical Weight of Moisture (Mc), Equilibrium Weight of Moisture (MEq), Falling Rate Drying Time (tf), Rate of Constant Drying Period (Nc) & Final Weight of Moisture for Falling Rate Period (Mf(Falling)) we can find Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period using the formula - Drying Surface Area = ((Critical Weight of Moisture-Equilibrium Weight of Moisture)/(Falling Rate Drying Time*Rate of Constant Drying Period))*(ln((Critical Weight of Moisture-Equilibrium Weight of Moisture)/(Final Weight of Moisture for Falling Rate Period-Equilibrium Weight of Moisture))). This formula also uses Natural Logarithm Function function(s).
What are the other ways to Calculate Drying Surface Area?
Here are the different ways to Calculate Drying Surface Area-
  • Drying Surface Area=Dry Weight of Solid*(Initial Moisture Content for Constant Rate Period-Critical Moisture Content)/(Constant Rate Drying Time*Rate of Constant Drying Period)OpenImg
  • Drying Surface Area=(Initial Weight of Moisture for Constant Rate-Critical Weight of Moisture)/(Constant Rate Drying Time*Rate of Constant Drying Period)OpenImg
  • Drying Surface Area=Dry Weight of Solid*(Initial Moisture Content for Constant Rate Period-Final Moisture Content for Constant Rate Period)/(Constant Rate Drying Time*Rate of Constant Drying Period)OpenImg
Can the Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period be negative?
No, the Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period, measured in Area cannot be negative.
Which unit is used to measure Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period?
Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period is usually measured using the Square Meter[m²] for Area. Square Kilometer[m²], Square Centimeter[m²], Square Millimeter[m²] are the few other units in which Drying Surface Area based on Critical to Final Weight of Moisture for Falling Rate Period can be measured.
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