Laborate Star

A Bomb Calorimeter is a laboratory instrument used to measure the calorific value (heat of combustion) of solid and liquid fuels. It operates by burning a weighed sample in a sealed stainless-steel bomb filled with oxygen under controlled conditions, while the heat released is measured through a surrounding water jacket.

Principle of Operation

The sample is placed in the combustion crucible inside the bomb. The bomb is sealed and charged with pure oxygen at high pressure. Upon ignition, the sample combusts completely. The heat released is absorbed by the surrounding water, and the temperature rise is measured to calculate the calorific value of the sample.

Main Components

• Combustion Bomb: High-grade stainless steel pressure vessel

• Crucible: Holds the test sample

• Ignition System: Electrical ignition wire and terminals

• Calorimeter Vessel: Water container surrounding the bomb

• Thermometer / Digital Temperature Sensor: Measures temperature change

• Stirrer: Ensures uniform heat distribution

• Oxygen Charging System: For pressurizing the bomb

Applications

• Determination of calorific value of coal, coke, fuel oil, biomass, food samples, and other combustible materials

• Quality control in power plants, cement industries, refineries, and research laboratories

Advantages

• High accuracy and repeatability

• Safe and robust construction

• Simple operation and maintenance

• Suitable for routine laboratory use

Safety Precautions

• Ensure the bomb is properly sealed before charging oxygen

• Do not exceed recommended oxygen pressure

• Clean the bomb thoroughly after each test

• Follow standard laboratory safety procedures