Refer to ISO 1928.
Isothermal includes both static jacket and isoperibol.
Isoperibol calorimeters control the temperature of the surrounding water jacket so that it is at a constant temperature. The static jacket has a thermal capacity such that the temperature of the surrounds remains nearly constant without active control. The variation in the static jacket is measured and compensated for.
Bomb Vessel Construction
Temperature measurement of surrounds:
Temperature measurement of energy:
Advantages of the DDS Static Jacket Bomb Calorimeter System
- No water inside the calorimeter
- No water control valves
- Can use multiple vessels per calorimeter
- Aluminium sleeve is the heatsink instead of water jacket
- No need to control the water level