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Designer World

Inviting you to the world of Mechanical Engineering Designs to explore your ideas. This is the area to open up your creativity in different streams of engineering especially mechanical engineering segment.

 I would like to introduce the following:

*   CAD Tools

*   Robotics

*   Piping

*   H V A C

*    Design of Machine Elements

*    Kinematics & Dynamics of Machinery

*    Principles of Aero-modelling 

*     Principles of Management

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"Think differently to achieve a great success"

Calorific Value of Fuels

The calorific value of a fuel is the quantity of heat produced by its combustion - at constant pressure and under "normal" conditions (i.e. to 0oC and under a pressure of 1,013 mbar).

The combustion process generates water vapor and certain techniques may be used to recover the quantity of heat contained in this water vapor by condensing it.

The Higher Calorific Value (or Gross Calorific Value - GCV) suppose that the water of combustion is entirely condensed and that the heat contained in the water vapor is recovered.

The Lower Calorific Value (or Net Calorific Value - NCV) suppose that the products of combustion contains the water vapor and that the heat in the water vapor is not recovered.

Fuel Higher Calorific Value
(Gross Calorific Value - GCV)
kJ/kg          Btu/lb
Acetone 29,000  
Alcohol, 96% 30,000  
Anthracite 32,500 - 34,000      14,000 - 14,500
Bituminous coal 17,000 - 23,250        7,300 - 10,000
Butane 49,510                  20,900
Carbon 34,080  
Charcoal 29,600                   12,800
Coal 15,000 - 27,000         8,000 - 14,000
Coke 28,000 - 31,000        12,000 - 13,500
Diesel 44,800                   19,300
Ethanol 29,700                   12,800
Ether 43,000  
Gasoline 47,300                   20,400
Glycerin 19,000  
Hydrogen 141,790                   61,000
Lignite 16,300                     7,000
Methane 55,530  
Oils, vegetable 39,000 - 48,000  
Peat 13,800 - 20,500          5,500 - 8,800
Petrol 48,000  
Petroleum 43,000  
Propane 50,350  
Semi anthracite 26,700 - 32,500        11,500 - 14,000
Sulfur 9,200  
Tar 36,000  
Turpentine 44,000  
Wood (dry) 14,400 - 17,400            6,200 - 7,500
  kJ/m3             Btu/ft3
Acetylene 56,000  
Butane C4H10 133,000                       3200
Hydrogen 13,000  
Natural gas 43,000                950 - 1150
Methane CH4 39,820  
Propane C3H8 101,000                        2550
Town gas 18,000  
  kJ/l             Btu/Imp gal
Gas oil 38,000                    164,000
Heavy fuel oil 41,200                    177,000
Kerosene 35,000                    154,000
  • 1 kJ/kg = 1 J/g = 0.4299 Btu/ lbm = 0.23884 kcal/kg
  • 1 Btu/lbm = 2.326 kJ/kg = 0.55 kcal/kg
  • 1 kcal/kg = 4.1868 kJ/kg = 1.8 Btu/lbm
  • 1 dm3 (Liter) = 10-3 m3 = 0.03532 ft3 = 1.308x10-3 yd3 = 0.220 Imp gal (UK) = 0.2642 Gallons (US)

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