Category: Fuel and Combustion

Liquefied petroleum gas (LPG) mainly contains propane and some fractions of butane. It must be stored under pressure to keep it in liquid form. LPG is gaining popularity as a gasoline substitute in IC engines because it costs 60% of petrol and gives 90% mileage of its fellow gasoline. It burns more clearly, has a…

Petroleum gases can be liquefied by slightly compressing them. When these gases liquefy, they contract and occupy less space. They can then be transported more easily in liquid form in pressurised containers. If the pressure is released by opening the valve, the liquid from the container begins to evaporate and provides a continuous supply of gas.…

The important properties of gaseous fuels are as follows:

The advantages of gaseous fuels are as follows: The disadvantages of gaseous fuels are as follows:

The calorific value of gaseous fuels is given in Table 1.4.   Table 1.4 Calorific value of gaseous fuels  

Liquid fuels should have the following desirable properties:

The calorific value of liquid fuels is given in Table 1.3.   Table 1.3 Calorific value of liquid fuels

The advantages of liquid fuels over solid fuels are as follows: The disadvantages of liquid fuels over solid fuels are as follows:

The main source of liquid fuels is petroleum which is obtained from drilled wells under the Earth’s crust. Petroleum has originated probably from organic matter such as fish and plant either by bacterial action or distillation under pressure and heat. It consists of a mixture of gases, liquids, and solid hydrocarbons with small amounts of…