Fuel: light oil (only including diesel and kerosene), heavy oil, residual oil Gas: natural gas, artificial gas, liquefied petroleum gas, gas (coal bed methane), biogas and other five categories. Among them, artificial gas, that is, city gas, gas, and biogas, has a large difference in composition and calorific value due to raw materials and generation methods.
Note 1: Conversion of common physical parameters
Pressure conversion
1 Bar (bar) = 105 Pa (Pa)
1 dyne/cm2 (dyn/cm2) = 0.1 Pa (Pa)
1 Torr (Torr) = 133.322 Pa (Pa)
1 millimeter of mercury (mmHg) = 133.322 Pa (Pa)
1 mm water column (mmH2O) = 9.80665 Pa (Pa)
Engineering atmospheric pressure = 98.0665 kilopascals (kPa)
1 kilopascal (kPa) = 0.145 pounds force / inch 2 (psi) = 0.0102 kilogram force / centimeter 2 (kgf/cm2) = 0.0098 atmospheric pressure (atm)
1 pound force/inch 2 (psi) = 6.895 kilopascal (kPa) = 0.0703 kilogram force / centimeter 2 (kg/cm2) = 0.0689 bar (bar) = 0.068 atmospheric pressure (atm)
1 Physical atmospheric pressure (atm) = 101.325 kilopascals (kPa) = 14.696 pounds per inch 2 (psi) = 1.0333 bar (bar) 1m3 (gaseous) liquefied gas = 2.3kg (liquid) liquefied gas
Common specific gravity
Natural gas 0.81kg/m3 Liquefied petroleum gas 2.08kg/m3 City gas 0.58kg/m3 Air 1.24kg/m3
Common volume: 1 gallon (gal) = 3.785 liters (1)
Heat transfer coefficient conversion:
1 kcal/m2.h (kcal/m2.h) = 1.16279 watts/m2 (w/m2)
1 kcal/(m.h.°C) [1kcal/(m.h.°C)]=1.16279 watts/(m.Kelvin) [w/(m2.K)]
1 Btu/(ft2.h.℉) [Btu/(ft2.h.℉)]=5.67826 watts/(m. Kelvin) [(w/m2.K)]
1 m2.h.°C/kcal (m2.h.°C/kcal)=0.86000m2.Kelvin/Watt (m2.K/W)
1 kcal (m.h.°C) [kcal/(m.h.°C)] = 1.16279 watts/(m. Kelvin) [W/(m.K)]
1 Btu/(ft.h.℉) [But/(ft.h.℉) = 1.7303 watts/(m. Kelvin) [W/(m.K)]
Specific volume heat conversion:
1 kcal/(kg.°C) [kcal/(kg.°C)] = 1 British thermal unit/(pound.°F) [Btu/(lb.°F)] = 4186.8 joules/(kg. Kelvin) [J/ (kg.K)]
Heat work conversion
1 calorie = 4186.75 joules (J) = 4.2KJ = 0.004MJ
10,000 calories = 42MJ 1 kilogram force meter (kgf.m) = 9.80665 joules (J)
1 British thermal unit (Btu) = 1055.06 joules (J) 1 kilowatt-hour (kW.h) = 3.6×106 joules (J)
1 foot-pound force (ft.lbf) = 1.35582 joules (J)
1 metric horsepower hour (hp.h) = 2.64779×106 joules (J)
1 British horsepower hour (UKHp.h) = 2.68452 × 106 joules
1 Joule = 0.10204 kg. M = 2.778 × 10-7 kW. Hour = 3.777 × 10-7 metric horsepower hour = 3.723 × 10-7 British horsepower hour = 2.389 × 10-4 kcal = 9.48 × 10-4 Btu unit
Power conversion
1 British thermal unit/hour (Btu/h) = 0.293071 watts (W)
1 kgf.m/s (kgfm/s) = 9.80665 watts (w)
1 card/second (cal/s) = 4.1868 watts (W)
1 metric horsepower (hp) = 735.499 watts (W)
Fuel: light oil (only including diesel and kerosene), heavy oil, residual oil Gas: natural gas, artificial gas, liquefied petroleum gas, gas (coal bed methane), biogas and other five categories. Among them, artificial gas, that is, city gas, gas, and biogas, has a large difference in composition and calorific value due to raw materials and generation methods.
Note 1: Conversion of common physical parameters
Pressure conversion
1 Bar (bar) = 105 Pa (Pa)
1 dyne/cm2 (dyn/cm2) = 0.1 Pa (Pa)
1 Torr (Torr) = 133.322 Pa (Pa)
1 millimeter of mercury (mmHg) = 133.322 Pa (Pa)
1 mm water column (mmH2O) = 9.80665 Pa (Pa)
Engineering atmospheric pressure = 98.0665 kilopascals (kPa)
1 kilopascal (kPa) = 0.145 pounds force / inch 2 (psi) = 0.0102 kilogram force / centimeter 2 (kgf/cm2) = 0.0098 atmospheric pressure (atm)
1 pound force/inch 2 (psi) = 6.895 kilopascal (kPa) = 0.0703 kilogram force / centimeter 2 (kg/cm2) = 0.0689 bar (bar) = 0.068 atmospheric pressure (atm)
1 Physical atmospheric pressure (atm) = 101.325 kilopascals (kPa) = 14.696 pounds per inch 2 (psi) = 1.0333 bar (bar) 1m3 (gaseous) liquefied gas = 2.3kg (liquid) liquefied gas
Common specific gravity
Natural gas 0.81kg/m3 Liquefied petroleum gas 2.08kg/m3 City gas 0.58kg/m3 Air 1.24kg/m3
Common volume: 1 gallon (gal) = 3.785 liters (1)
Heat transfer coefficient conversion:
1 kcal/m2.h (kcal/m2.h) = 1.16279 watts/m2 (w/m2)
1 kcal/(m.h.°C) [1kcal/(m.h.°C)]=1.16279 watts/(m.Kelvin) [w/(m2.K)]
1 Btu/(ft2.h.℉) [Btu/(ft2.h.℉)]=5.67826 watts/(m. Kelvin) [(w/m2.K)]
1 m2.h.°C/kcal (m2.h.°C/kcal)=0.86000m2.Kelvin/Watt (m2.K/W)
1 kcal (m.h.°C) [kcal/(m.h.°C)] = 1.16279 watts/(m. Kelvin) [W/(m.K)]
1 Btu/(ft.h.℉) [But/(ft.h.℉) = 1.7303 watts/(m. Kelvin) [W/(m.K)]
Specific volume heat conversion:
1 kcal/(kg.°C) [kcal/(kg.°C)] = 1 British thermal unit/(pound.°F) [Btu/(lb.°F)] = 4186.8 joules/(kg. Kelvin) [J/ (kg.K)]
Heat work conversion
1 calorie = 4186.75 joules (J) = 4.2KJ = 0.004MJ
10,000 calories = 42MJ 1 kilogram force meter (kgf.m) = 9.80665 joules (J)
1 British thermal unit (Btu) = 1055.06 joules (J) 1 kilowatt-hour (kW.h) = 3.6×106 joules (J)
1 foot-pound force (ft.lbf) = 1.35582 joules (J)
1 metric horsepower hour (hp.h) = 2.64779×106 joules (J)
1 British horsepower hour (UKHp.h) = 2.68452 × 106 joules
1 Joule = 0.10204 kg. M = 2.778 × 10-7 kW. Hour = 3.777 × 10-7 metric horsepower hour = 3.723 × 10-7 British horsepower hour = 2.389 × 10-4 kcal = 9.48 × 10-4 Btu unit
Power conversion
1 British thermal unit/hour (Btu/h) = 0.293071 watts (W)
1 kgf.m/s (kgfm/s) = 9.80665 watts (w)
1 card/second (cal/s) = 4.1868 watts (W)
1 metric horsepower (hp) = 735.499 watts (W)