Basic Thermodynamics

Ideal Gas Equation

Gibbs Phase Rule

• P + F = C + 2
• P = Number of Phases
• F = Degree of freedom
• C = Num of Components
• n = 2 (Thermodynamics)
• This formula will be used to find whether a substance is pure substance or not

Temperature scale conversions

Fixed Mass Energy analysis

Closed System Work

Work Equations for various processes

• Constant volume / Isochoric / Isometric:
• Constant Pressure / Isobaric / Isopiestic:

Constant Temperature / Isothermal / Hyperbolic:


• Adiabatic process:
• Polytropic process:

Various process in P-V diagram

Heat

• 2. Qv = mCvdT
  3. Qp = mCpdT


• Specific Heat formulae:
  1. Cp > Cv
  2. Cp - Cv = R
  3. Cp/Cv = γ


• Gamma values
1. Monoatomic(γ) = 1.67
2. Diatomic(γ) = 1.4
3. Triatomi(γ) = 1.33


• Properties of Air
1. Cp = 1.005 KJ/KgK
2. Cv = 0.718 KJ/KgK
3. R = 0.287 KJ/KgK
4. γ = 1.4
5. m = 29


• Derivation of Meyer's equation

First Law of Thermodynamics

• Cyclic process:
• Closed system:
• Stationary system:
• When Other work = 0:

• Heat Equations for Various processes


1. Constant Volume Heat:


2. Constant Pressure Heat:


3. Constant Temperature Heat:
• Isothermal Sp.Heat:


4. Adiabatic Heat: dQ = 0
• Adiabatic Sp.Heat:


5. Polytropic Heat: