Entropy Balance Equation Calculator

✖Entropy of System is the total entropy of the system.ⓘ Entropy of System [Gsys]			+10% -10%
✖Entropy of Surrounding is the total entropy change of the surrounding.ⓘ Entropy of Surrounding [Gsurr]			+10% -10%
✖Total Entropy Generation is the summation of entropy change of the system and of its surroundings.ⓘ Total Entropy Generation [TEG]			+10% -10%

✖Entropy Change Variable Specific Heat is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.ⓘ Entropy Balance Equation [δs]

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Formula

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Entropy Balance Equation

Formula

`"δs" = "Gsys"-"Gsurr"+"TEG"`

Example

`"105J/kg*K"="85J/kg*K"-"130J/kg*K"+"150J/kg*K"`

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Entropy Balance Equation Solution

STEP 0: Pre-Calculation Summary

Formula Used

Entropy Change Variable Specific Heat = Entropy of System-Entropy of Surrounding+Total Entropy Generation
δs = Gsys-Gsurr+TEG
This formula uses 4 Variables

Variables Used

Entropy Change Variable Specific Heat - (Measured in Joule per Kilogram K) - Entropy Change Variable Specific Heat is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.
Entropy of System - (Measured in Joule per Kilogram K) - Entropy of System is the total entropy of the system.
Entropy of Surrounding - (Measured in Joule per Kilogram K) - Entropy of Surrounding is the total entropy change of the surrounding.
Total Entropy Generation - (Measured in Joule per Kilogram K) - Total Entropy Generation is the summation of entropy change of the system and of its surroundings.

STEP 1: Convert Input(s) to Base Unit

Entropy of System: 85 Joule per Kilogram K --> 85 Joule per Kilogram K No Conversion Required
Entropy of Surrounding: 130 Joule per Kilogram K --> 130 Joule per Kilogram K No Conversion Required
Total Entropy Generation: 150 Joule per Kilogram K --> 150 Joule per Kilogram K No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

δs = Gsys-Gsurr+TEG --> 85-130+150

Evaluating ... ...

δs = 105

STEP 3: Convert Result to Output's Unit

105 Joule per Kilogram K --> No Conversion Required

FINAL ANSWER

105 Joule per Kilogram K <-- Entropy Change Variable Specific Heat

(Calculation completed in 00.004 seconds)

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Created by Anirudh Singh

National Institute of Technology (NIT), Jamshedpur

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< 16 Entropy Generation Calculators

Entropy Change at Constant Volume

Go Entropy Change Constant Volume = Heat Capacity Constant Volume*ln(Temperature of Surface 2/Temperature of Surface 1)+[R]*ln(Specific Volume at Point 2/Specific Volume at Point 1)

Entropy Change at Constant Pressure

Go Entropy Change Constant Pressure = Heat Capacity Constant Pressure*ln(Temperature of Surface 2/Temperature of Surface 1)-[R]*ln(Pressure 2/Pressure 1)

Irreversibility

Go Irreversibility = (Temperature*(Entropy at point 2-Entropy at point 1)-Heat input/Input Temperature+Heat output/Output Temperature)

Entropy Change Variable Specific Heat

Go Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1)

Entropy Change in Isobaric Processin Terms of Volume

Go Entropy Change Constant Pressure = Mass of Gas*Molar Specific Heat Capacity at Constant Pressure*ln(Final Volume of System/Initial Volume of System)

Entropy Change for Isochoric Process given Pressures

Go Entropy Change Constant Volume = Mass of Gas*Molar Specific Heat Capacity at Constant Volume*ln(Final Pressure of System/Initial Pressure of System)

Entropy Change in Isobaric Process given Temperature

Go Entropy Change Constant Pressure = Mass of Gas*Molar Specific Heat Capacity at Constant Pressure*ln(Final Temperature/Initial Temperature)

Entropy Change for Isochoric Process given Temperature

Go Entropy Change Constant Volume = Mass of Gas*Molar Specific Heat Capacity at Constant Volume*ln(Final Temperature/Initial Temperature)

Entropy Change for Isothermal Process given Volumes

Go Change in Entropy = Mass of Gas*[R]*ln(Final Volume of System/Initial Volume of System)

Entropy Balance Equation

Go Entropy Change Variable Specific Heat = Entropy of System-Entropy of Surrounding+Total Entropy Generation

Temperature using Helmholtz Free Energy

Go Temperature = (Internal Energy-Helmholtz Free Energy)/Entropy

Entropy using Helmholtz Free Energy

Go Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature

Internal Energy using Helmholtz Free Energy

Go Internal Energy = Helmholtz Free Energy+Temperature*Entropy

Helmholtz Free Energy

Go Helmholtz Free Energy = Internal Energy-Temperature*Entropy

Gibbs Free Energy

Go Gibbs Free Energy = Enthalpy-Temperature*Entropy

Specific Entropy

Go Specific Entropy = Entropy/Mass

Entropy Balance Equation Formula

Entropy Change Variable Specific Heat = Entropy of System-Entropy of Surrounding+Total Entropy Generation
δs = Gsys-Gsurr+TEG

What is the Total Entropy Generation?

The total entropy generation is the summation of entropy change of the system and of its surroundings.

How to Calculate Entropy Balance Equation?

Entropy Balance Equation calculator uses Entropy Change Variable Specific Heat = Entropy of System-Entropy of Surrounding+Total Entropy Generation to calculate the Entropy Change Variable Specific Heat, Entropy Balance Equation states that the total entropy generation is the summation of entropy change of the system and of its surroundings. Entropy Change Variable Specific Heat is denoted by δs symbol.

How to calculate Entropy Balance Equation using this online calculator? To use this online calculator for Entropy Balance Equation, enter Entropy of System (Gsys), Entropy of Surrounding (Gsurr) & Total Entropy Generation (TEG) and hit the calculate button. Here is how the Entropy Balance Equation calculation can be explained with given input values -> 105 = 85-130+150.

FAQ

What is Entropy Balance Equation?

Entropy Balance Equation states that the total entropy generation is the summation of entropy change of the system and of its surroundings and is represented as δs = Gsys-Gsurr+TEG or Entropy Change Variable Specific Heat = Entropy of System-Entropy of Surrounding+Total Entropy Generation. Entropy of System is the total entropy of the system, Entropy of Surrounding is the total entropy change of the surrounding & Total Entropy Generation is the summation of entropy change of the system and of its surroundings.

How to calculate Entropy Balance Equation?

Entropy Balance Equation states that the total entropy generation is the summation of entropy change of the system and of its surroundings is calculated using Entropy Change Variable Specific Heat = Entropy of System-Entropy of Surrounding+Total Entropy Generation. To calculate Entropy Balance Equation, you need Entropy of System (Gsys), Entropy of Surrounding (Gsurr) & Total Entropy Generation (TEG). With our tool, you need to enter the respective value for Entropy of System, Entropy of Surrounding & Total Entropy Generation and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Entropy Change Variable Specific Heat?

In this formula, Entropy Change Variable Specific Heat uses Entropy of System, Entropy of Surrounding & Total Entropy Generation. We can use 1 other way(s) to calculate the same, which is/are as follows -

Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1)

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