Sponsored Topics. Lawrenceburg is a city in Lawrence County, Tennessee, United States. The population was 10,796 at the 2000 census. It is the county seat of Lawrence County. Lawrenceburg is southwest of Nashville and named after James Lawrence.
vacuum pressure = absolute pressure inside the vessel - absolute pressure outside the vessel, when the outside is greater than the inside. Vacuum pressure is the amount of pressure that inside the container is less than outside. Since the damage is done by a difference of pressure, the vacuum pressure means that the force is pointing to inside the container. But because the hard vacuum at 0 psi, and the outside is 14.7 psi, the vacuum can not be greater than 14.7 psi.
A gauge pressure occurs when the measured differential pressure is greater than the atmospheric pressure (), whereas a vacuum pressure is the opposite (). In both equations p is the system's absolute pressure and pa is the atmospheric pressure. See more Mechanical Engineering topics.