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Gas - Compressible

Natural Gas, Nitrogen, Hydrogen 등의 압축성 기체의 물성을 계산하기 위해 다음 코드를 사용합니다:

GERG2008은 천연가스 및 기타 혼합가스의 물성을 계산하기 위한 국제 표준 방정식입니다. 이 모듈은 밀도, 압축계수, 엔탈피, 열용량 등 다양한 열역학적 물성을 계산할 수 있으며, 특히 천연가스, 수소, 질소와 같은 산업용 가스의 정확한 물성 계산에 적합합니다.

Operating Ranges

  • Pressure: 0 to 350 bara
  • Temperature: -183°C to 277°C
  • Valid ranges may vary depending on the gas mixture composition

Gas Functions

Abbr. INPUT Unit RESULT Unit Function Description
GasRHO_PT pressure, bara
temperature, °C
fluid name
kg/m3 Get Density at pressure & Temperature
GasMM_PT pressure, bara
temperature, °C
fluid name
g/mol Get Molar Mass at pressure & Temperature
GasZ_PT pressure, bara
temperature, °C
fluid name
- Get Compressibility at pressure & Temperature
GasCV_PT pressure, bara
temperature, °C
fluid name
J/(mol-K) Get Isochoric Heat Capacity at pressure & Temperature
GasCP_PT pressure, bara
temperature, °C
fluid name
J/(mol-K) Get Isobaric Heat Capacity at pressure & Temperature
GasJT_PT pressure, bara
temperature, °C
fluid name
K/kPa Get Joule Thomson at pressure & Temperature
GasW_PT pressure, bara
temperature, °C
fluid name
m/s Get Speed of Sound at pressure & Temperature
GasK_PT pressure, bara
temperature, °C
fluid name
- Get Isentropic exponent at pressure & Temperature
GasLHVmass fluid name
[temperature, °C]
kJ/kg Get Lower Heating Value
GasHHVmass fluid name
[temperature, °C]
kJ/kg Get Higher Heating Value

Fluid Name Format

  • The fluid name should be provided as a string specifying the gas mixture composition
  • Example format: “CH4:0.94,C2H6:0.05,CO2:0.01” represents a mixture of:
    • 94% Methane (CH4)
    • 5% Ethane (C2H6)
    • 1% Carbon Dioxide (CO2)
  • Components must sum to 1.0 (100%)
  • Supported components include: CH4 (Methane), C2H6 (Ethane), C3H8 (Propane), N2 (Nitrogen), CO2 (Carbon Dioxide), and others per GERG2008 standard

Notes

  • Temperature is optional parameter for LHV and HHV calculations
  • Temperature defaults to 25°C if not provided for LHV and HHV
  • Temperature must be provided for all other functions