Entropy at point 1 Calculator

✖Liquid Entropy at Point 1 is the entropy of the liquid refrigerant at the first point in the vapour compression refrigeration cycle.ⓘ Liquid Entropy at Point 1 [s_f1]			+10% -10%
✖Dryness Fraction at Point 1 is the measure of the amount of dry air in the refrigerant at the first point of the vapour compression refrigeration cycle.ⓘ Dryness Fraction at Point 1 [x₁]			+10% -10%
✖Latent Heat of Fusion is the energy required to change the state of a substance from solid to liquid during the vapour compression refrigeration cycle.ⓘ Latent Heat of Fusion [h_fg]			+10% -10%
✖Temperature at the suction of compressor is the temperature of the refrigerant at the suction side of the compressor in a vapour compression refrigeration cycle.ⓘ Temperature at The Suction of Compressor [T₁]			+10% -10%

✖Entropy at Point 1 is a thermodynamic property that measures the disorder or randomness of a system at a specific point in the vapour compression refrigeration cycle.ⓘ Entropy at point 1 [s₁]

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Formula

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Entropy at point 1

Formula

s 1 = s f1 + (\frac{x 1 \cdot h fg}{T 1})

Example

3.64 kJ/kg*K = 3 kJ/kg*K + (\frac{0.16 \cdot 1000 kJ/kg}{250 K})

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Entropy at point 1 Solution

STEP 0: Pre-Calculation Summary

Formula Used

Entropy at Point 1 = Liquid Entropy at Point 1+((Dryness Fraction at Point 1*Latent Heat of Fusion)/Temperature at The Suction of Compressor)
s₁ = s_f1+((x₁*h_fg)/T₁)
This formula uses 5 Variables

Variables Used

Entropy at Point 1 - (Measured in Joule per Kilogram K) - Entropy at Point 1 is a thermodynamic property that measures the disorder or randomness of a system at a specific point in the vapour compression refrigeration cycle.
Liquid Entropy at Point 1 - (Measured in Joule per Kilogram K) - Liquid Entropy at Point 1 is the entropy of the liquid refrigerant at the first point in the vapour compression refrigeration cycle.
Dryness Fraction at Point 1 - Dryness Fraction at Point 1 is the measure of the amount of dry air in the refrigerant at the first point of the vapour compression refrigeration cycle.
Latent Heat of Fusion - (Measured in Joule per Kilogram) - Latent Heat of Fusion is the energy required to change the state of a substance from solid to liquid during the vapour compression refrigeration cycle.
Temperature at The Suction of Compressor - (Measured in Kelvin) - Temperature at the suction of compressor is the temperature of the refrigerant at the suction side of the compressor in a vapour compression refrigeration cycle.

STEP 1: Convert Input(s) to Base Unit

Liquid Entropy at Point 1: 3 Kilojoule per Kilogram K --> 3000 Joule per Kilogram K (Check conversion here)
Dryness Fraction at Point 1: 0.16 --> No Conversion Required
Latent Heat of Fusion: 1000 Kilojoule per Kilogram --> 1000000 Joule per Kilogram (Check conversion here)
Temperature at The Suction of Compressor: 250 Kelvin --> 250 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

s₁ = s_f1+((x₁*h_fg)/T₁) --> 3000+((0.16*1000000)/250)

Evaluating ... ...

s₁ = 3640

STEP 3: Convert Result to Output's Unit

3640 Joule per Kilogram K -->3.64 Kilojoule per Kilogram K (Check conversion here)

FINAL ANSWER

3.64 Kilojoule per Kilogram K <-- Entropy at Point 1

(Calculation completed in 00.004 seconds)

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Created by Rushi Shah

K J Somaiya College of Engineering (K J Somaiya), Mumbai

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< Enthalpy of Vapour Compression Refrigeration Cycle Calculators

Entropy at point 1

Go Entropy at Point 1 = Liquid Entropy at Point 1+((Dryness Fraction at Point 1*Latent Heat of Fusion)/Temperature at The Suction of Compressor)

Enthalpy at Point 4 given Liquid Enthalpy at Point 4

Go Enthalpy of The Vapour Refrigerant at T4 = Liquid Enthalpy at Point 4+(Dryness Fraction at Point 4*Latent Heat of Fusion)

Enthalpy at point 2

Go Enthalpy of The Vapour Refrigerant at T2 = Liquid Enthalpy at Point 2+(Dryness Fraction at Point 2*Latent Heat of Fusion)

Enthalpy at point 1 given Liquid enthalpy at point 1

Go Enthalpy of The Vapour Refrigerant at T1 = Liquid Enthalpy at Point 1+Dryness Fraction at Point 1*Latent Heat of Fusion

< Enthalpy of Air Calculators

Coefficient of Performance given enthalpy of liquid refrigerant leaving condenser (hf3)

Go Theoretical Coefficient of Performance = (Enthalpy of The Vapour Refrigerant at T1-Sensible Heat at Temperature T3)/(Enthalpy of The Vapour Refrigerant at T2-Enthalpy of The Vapour Refrigerant at T1)

Refrigerating Effect(for given h1 and h4)

Go Refrigerating Effect = Enthalpy of The Vapour Refrigerant at T1-Enthalpy of The Vapour Refrigerant at T4

Refrigerating Effect given Enthalpy at Inlet of Compressor and Exit of Condenser

Go Refrigerating Effect = Enthalpy of The Vapour Refrigerant at T1-Sensible Heat at Temperature T3

Work done during isentropic compression(per Kg of refrigerant)

Go Work Done = Enthalpy of The Vapour Refrigerant at T2-Enthalpy of The Vapour Refrigerant at T1

Entropy at point 1 Formula

Entropy at Point 1 = Liquid Entropy at Point 1+((Dryness Fraction at Point 1*Latent Heat of Fusion)/Temperature at The Suction of Compressor)
s₁ = s_f1+((x₁*h_fg)/T₁)

What is Entropy?

The amount of entropy is also a measure of the molecular disorder, or randomness, of a system. In refrigeration, Entropy measures the energy dispersion in a system divided by temperature. This ratio represents the tendency of energy to spread out, to diffuse, to become less concentrated in one physical location or one energetic state.

How to Calculate Entropy at point 1?

Entropy at point 1 calculator uses Entropy at Point 1 = Liquid Entropy at Point 1+((Dryness Fraction at Point 1*Latent Heat of Fusion)/Temperature at The Suction of Compressor) to calculate the Entropy at Point 1, Entropy at point 1 formula is defined as a measure of the disorder or randomness of a system at a specific point, typically represented by the symbol "s" and is used to quantify the amount of thermal energy unavailable to do work in a thermodynamic system. Entropy at Point 1 is denoted by s₁ symbol.

How to calculate Entropy at point 1 using this online calculator? To use this online calculator for Entropy at point 1, enter Liquid Entropy at Point 1 (s_f1), Dryness Fraction at Point 1 (x₁), Latent Heat of Fusion (h_fg) & Temperature at The Suction of Compressor (T₁) and hit the calculate button. Here is how the Entropy at point 1 calculation can be explained with given input values -> 0.00364 = 3000+((0.16*1000000)/250).

FAQ

What is Entropy at point 1?

Entropy at point 1 formula is defined as a measure of the disorder or randomness of a system at a specific point, typically represented by the symbol "s" and is used to quantify the amount of thermal energy unavailable to do work in a thermodynamic system and is represented as s₁ = s_f1+((x₁*h_fg)/T₁) or Entropy at Point 1 = Liquid Entropy at Point 1+((Dryness Fraction at Point 1*Latent Heat of Fusion)/Temperature at The Suction of Compressor). Liquid Entropy at Point 1 is the entropy of the liquid refrigerant at the first point in the vapour compression refrigeration cycle, Dryness Fraction at Point 1 is the measure of the amount of dry air in the refrigerant at the first point of the vapour compression refrigeration cycle, Latent Heat of Fusion is the energy required to change the state of a substance from solid to liquid during the vapour compression refrigeration cycle & Temperature at the suction of compressor is the temperature of the refrigerant at the suction side of the compressor in a vapour compression refrigeration cycle.

How to calculate Entropy at point 1?

Entropy at point 1 formula is defined as a measure of the disorder or randomness of a system at a specific point, typically represented by the symbol "s" and is used to quantify the amount of thermal energy unavailable to do work in a thermodynamic system is calculated using Entropy at Point 1 = Liquid Entropy at Point 1+((Dryness Fraction at Point 1*Latent Heat of Fusion)/Temperature at The Suction of Compressor). To calculate Entropy at point 1, you need Liquid Entropy at Point 1 (s_f1), Dryness Fraction at Point 1 (x₁), Latent Heat of Fusion (h_fg) & Temperature at The Suction of Compressor (T₁). With our tool, you need to enter the respective value for Liquid Entropy at Point 1, Dryness Fraction at Point 1, Latent Heat of Fusion & Temperature at The Suction of Compressor and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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