Operating instruction bladder accumulator BLAK - English
5
2.2.1 Isochore behavior of N2
Determining or controlling the pre-filling pressure (P
0
) at different ambient temperatures
General
Unless otherwise specified, the given P
0
refers to room temperatures of + 20°C. Should the actual
ambient temperature be different at the time of filling or checking P
0
, the diagram may be used to find
the pressure corresponding to that temperature when filling or checking.
Example
Assume a gas system at 155 bar of pressure at a gas temperature of + 20°C. If the gas temperature
rises to + 35°C, the intersection (155 bar at + 20°C) will shift to the next pressure-temperature curve to
intersect the ve 35°C temperature line. The fill or corrected pressure P
0
will need to be 166 bar
in this example.
Figure 2-1
Isochore behavior of N2
