Pressure increase rate

Explosion limits indicate in which concentration range a mixture of combustible substance can be ignited. There are two limits, the lower explosion limit (LEL), below which the concentration is too low to produce an explosion and the upper explosion limit (UEL), above which the oxygen is in default and no explosion occurs. Further, the explosion is characterized by the maximum explosion pressure and its violence by the maximum pressure increase rate. In order... 

For chemical scenarios, the kinetic behavior of the reaction, the temperature and pressure increase rate must be known under runaway conditions in the interval between set pressure and maximum pressure. This implies a good knowledge of the thermo-chemical properties of the reaction mass. The required data are traditionally obtained from adiabatic calorimetric experiments [22, 25, 26]. Nevertheless, other calorimetric methods, especially dynamic DSC or Calvet experiments evaluated using the isoconversional approach, can also provide these data with accuracy and an excellent reliability for the temperature increase rate [27], as well as for the pressure increase [28, 29]. 

Press speed (rotation) Pressure increase rate... 

Closure of tank and measurements of pressure increase rates simulating conditions of a maritime transport... 

With this equation the diffusion coefficient can be obtained from the time lag if the membrane thickness is known. This way to calculate the diffusion coefficient will be further referred to as the Tangent method and the procedure is schematically displayed in Figure 4.8, top section. The permeability follows from the steady state pressure increase rate and can be defined as ... 

For failures of pipes belonging to the ring, the pressure regulation time is characterized by assuming a pressure increase rate of 2 mbar/h and using the results of the fluid-dynamic analysis which provides the minimum pressure increase AP to be actuated at the supply node so that all online nodes are served. 

The second explanation is based on the pressure increase rate within the pores. The just-produced, partially crystalline polymer within the pores will certainly have difficulty in achieving an even pressure distribution on the pore wall at the moment the pore is filled. There may be high pressure associated with the active site, and in some parts where crystalline regions touches pore walls (fig. 7a). Elsewhere there would mostly be the low pressure associated with deforming the amorphous phase polymer from its thermodynamically most stable (ball-like) form. 

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