Actual Enthalpy Change using Isentropic Compression Efficieny Calculator

✖Change in Enthalpy (Isentropic) is the thermodynamic quantity equivalent to the total difference between the heat content of a system under reversible and adiabatic conditions.ⓘ Change in Enthalpy (Isentropic) [ΔH_S]			+10% -10%
✖Compressor Efficiency shows how efficient the compressor is in the process.ⓘ Compressor Efficiency [η_c]			+10% -10%

✖Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system.ⓘ Actual Enthalpy Change using Isentropic Compression Efficieny [ΔH]

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Actual Enthalpy Change using Isentropic Compression Efficieny

Formula

`"ΔH" = "ΔH"_{"S"}/"η"_{"c"}`

Example

`"553.5714J/kg"="310J/kg"/"0.56"`

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Actual Enthalpy Change using Isentropic Compression Efficieny Solution

STEP 0: Pre-Calculation Summary

Formula Used

Change in Enthalpy = Change in Enthalpy (Isentropic)/Compressor Efficiency
ΔH = ΔH_S/η_c
This formula uses 3 Variables

Variables Used

Change in Enthalpy - (Measured in Joule per Kilogram) - Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system.
Change in Enthalpy (Isentropic) - (Measured in Joule per Kilogram) - Change in Enthalpy (Isentropic) is the thermodynamic quantity equivalent to the total difference between the heat content of a system under reversible and adiabatic conditions.
Compressor Efficiency - Compressor Efficiency shows how efficient the compressor is in the process.

STEP 1: Convert Input(s) to Base Unit

Change in Enthalpy (Isentropic): 310 Joule per Kilogram --> 310 Joule per Kilogram No Conversion Required
Compressor Efficiency: 0.56 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ΔH = ΔH_S/η_c --> 310/0.56

Evaluating ... ...

ΔH = 553.571428571429

STEP 3: Convert Result to Output's Unit

553.571428571429 Joule per Kilogram --> No Conversion Required

FINAL ANSWER

553.571428571429 ≈ 553.5714 Joule per Kilogram <-- Change in Enthalpy

(Calculation completed in 00.004 seconds)

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Created by Shivam Sinha

National Institute Of Technology (NIT), Surathkal

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< 23 Application of Thermodynamics to Flow Processes Calculators

Isentropic Work Done Rate for Adiabatic Compression Process using Gamma

Go Shaft Work (Isentropic) = [R]*(Temperature of Surface 1/((Heat Capacity Ratio-1)/Heat Capacity Ratio))*((Pressure 2/Pressure 1)^((Heat Capacity Ratio-1)/Heat Capacity Ratio)-1)

Volume Expansivity for Pumps using Entropy

Go Volume Expansivity = ((Specific Heat Capacity at Constant Pressure per K*ln(Temperature of Surface 2/Temperature of Surface 1))-Change in Entropy)/(Volume*Difference in Pressure)

Enthalpy for Pumps using Volume Expansivity for Pump

Go Change in Enthalpy = (Specific Heat Capacity at Constant Pressure per K*Overall Difference in Temperature)+(Specific Volume*(1-(Volume Expansivity*Temperature of Liquid))*Difference in Pressure)

Volume Expansivity for Pumps using Enthalpy

Go Volume Expansivity = ((((Specific Heat Capacity at Constant Pressure*Overall Difference in Temperature)-Change in Enthalpy)/(Volume*Difference in Pressure))+1)/Temperature of Liquid

Entropy for Pumps using Volume Expansivity for Pump

Go Change in Entropy = (Specific Heat Capacity*ln(Temperature of Surface 2/Temperature of Surface 1))-(Volume Expansivity*Volume*Difference in Pressure)

Isentropic Work done rate for Adiabatic Compression Process using Cp

Go Shaft Work (Isentropic) = Specific Heat Capacity*Temperature of Surface 1*((Pressure 2/Pressure 1)^([R]/Specific Heat Capacity)-1)

Overall Efficiency given Boiler, Cycle, Turbine, Generator, and Auxiliary Efficiency

Go Overall Efficiency = Boiler Efficiency*Cycle Efficiency*Turbine Efficiency*Generator Efficiency*Auxiliary Efficiency

Shaft Power

Go Shaft Power = 2*pi*Revolutions per Second*Torque Exerted on Wheel

Isentropic Change in Enthalpy using Compressor Efficiency and Actual Change in Enthalpy

Go Change in Enthalpy (Isentropic) = Compressor Efficiency*Change in Enthalpy

Compressor Efficiency using Actual and Isentropic Change in Enthalpy

Go Compressor Efficiency = Change in Enthalpy (Isentropic)/Change in Enthalpy

Actual Enthalpy Change using Isentropic Compression Efficieny

Go Change in Enthalpy = Change in Enthalpy (Isentropic)/Compressor Efficiency

Isentropic Change in Enthalpy using Turbine Efficiency and Actual Change in Enthalpy

Go Change in Enthalpy (Isentropic) = Change in Enthalpy/Turbine Efficiency

Actual Change in Enthalpy using Turbine Efficiency and Isentropic Change in Enthalpy

Go Change in Enthalpy = Turbine Efficiency*Change in Enthalpy (Isentropic)

Actual Work done using Compressor Efficiency and Isentropic Shaft Work

Go Actual Shaft Work = Shaft Work (Isentropic)/Compressor Efficiency

Isentropic Work Done using Compressor Efficiency and Actual Shaft Work

Go Shaft Work (Isentropic) = Compressor Efficiency*Actual Shaft Work

Compressor Efficiency using Actual and Isentropic Shaft Work

Go Compressor Efficiency = Shaft Work (Isentropic)/Actual Shaft Work

Actual Work Done using Turbine Efficiency and Isentropic Shaft Work

Go Actual Shaft Work = Turbine Efficiency*Shaft Work (Isentropic)

Isentropic Work Done using Turbine Efficiency and Actual Shaft Work

Go Shaft Work (Isentropic) = Actual Shaft Work/Turbine Efficiency

Turbine Efficiency using Actual and Isentropic Shaft Work

Go Turbine Efficiency = Actual Shaft Work/Shaft Work (Isentropic)

Nozzle Efficiency

Go Nozzle Efficiency = Change in Kinetic Energy/Kinetic Energy

Mass Flow Rate of Stream in Turbine (Expanders)

Go Mass Flow Rate = Work Done Rate/Change in Enthalpy

Change in Enthalpy in Turbine (Expanders)

Go Change in Enthalpy = Work Done Rate/Mass Flow Rate

Work Done Rate by Turbine (Expanders)

Go Work Done Rate = Change in Enthalpy*Mass Flow Rate

Actual Enthalpy Change using Isentropic Compression Efficieny Formula

Change in Enthalpy = Change in Enthalpy (Isentropic)/Compressor Efficiency
ΔH = ΔH_S/η_c

How does a compressor work?

The compression of gases may be accomplished in equipment with rotating blades (like a turbine operating in reverse) or in cylinders with reciprocating pistons. Rotary equipment is used for high-volume flow where the discharge pressure is not too high. For high pressures, reciprocating compressors are often required. The energy equations are independent of the type of equipment; indeed, they are the same as for turbines or expanders because here, too, potential and kinetic-energy changes are presumed negligible.

How to Calculate Actual Enthalpy Change using Isentropic Compression Efficieny?

Actual Enthalpy Change using Isentropic Compression Efficieny calculator uses Change in Enthalpy = Change in Enthalpy (Isentropic)/Compressor Efficiency to calculate the Change in Enthalpy, The Actual Enthalpy Change using Isentropic Compression Efficieny is given formula is defined as the ratio of the change in enthalpy done by the compressor under reversible and adiabatic conditions (which is isentropic condition) to the compressor efficiency. Change in Enthalpy is denoted by ΔH symbol.

How to calculate Actual Enthalpy Change using Isentropic Compression Efficieny using this online calculator? To use this online calculator for Actual Enthalpy Change using Isentropic Compression Efficieny, enter Change in Enthalpy (Isentropic) (ΔH_S) & Compressor Efficiency (η_c) and hit the calculate button. Here is how the Actual Enthalpy Change using Isentropic Compression Efficieny calculation can be explained with given input values -> 553.5714 = 310/0.56.

FAQ

What is Actual Enthalpy Change using Isentropic Compression Efficieny?

The Actual Enthalpy Change using Isentropic Compression Efficieny is given formula is defined as the ratio of the change in enthalpy done by the compressor under reversible and adiabatic conditions (which is isentropic condition) to the compressor efficiency and is represented as ΔH = ΔH_S/η_c or Change in Enthalpy = Change in Enthalpy (Isentropic)/Compressor Efficiency. Change in Enthalpy (Isentropic) is the thermodynamic quantity equivalent to the total difference between the heat content of a system under reversible and adiabatic conditions & Compressor Efficiency shows how efficient the compressor is in the process.

How to calculate Actual Enthalpy Change using Isentropic Compression Efficieny?

The Actual Enthalpy Change using Isentropic Compression Efficieny is given formula is defined as the ratio of the change in enthalpy done by the compressor under reversible and adiabatic conditions (which is isentropic condition) to the compressor efficiency is calculated using Change in Enthalpy = Change in Enthalpy (Isentropic)/Compressor Efficiency. To calculate Actual Enthalpy Change using Isentropic Compression Efficieny, you need Change in Enthalpy (Isentropic) (ΔH_S) & Compressor Efficiency (η_c). With our tool, you need to enter the respective value for Change in Enthalpy (Isentropic) & Compressor Efficiency 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 Change in Enthalpy?

In this formula, Change in Enthalpy uses Change in Enthalpy (Isentropic) & Compressor Efficiency. We can use 3 other way(s) to calculate the same, which is/are as follows -

Change in Enthalpy = (Specific Heat Capacity at Constant Pressure per K*Overall Difference in Temperature)+(Specific Volume*(1-(Volume Expansivity*Temperature of Liquid))*Difference in Pressure)
Change in Enthalpy = Work Done Rate/Mass Flow Rate
Change in Enthalpy = Turbine Efficiency*Change in Enthalpy (Isentropic)

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