Bomb calorimeter

Bomb calorimeter Parr 1351, a.k.a. "Bombi"

With this calorimeter, it is possible to determine the energy of solid and liquid fuels. The fuel (weighing in at about 1 g) is placed in a crucible, and is gently touched by a fuse. The crucible is placed in a pressure vessel (oxygen bomb 1108) which is filled up to 30 bar with pure oxygen. The vessel is then submerged in water, and the rise in temperature of the water through the combustion of the fuel is measured. Through calibration, it is possible to determine the energy of the substance through the rise in temperature of the water. Corrections for deviations from the conditions provided in the DIN Norm 5499 are possible.

The energy of a wide variety of fuels can be determined through this method. Fuels with a high number of halogen compounds or explosives cannot be measured with this apparatus, but highly flammable and powdered fuels can.