ambient pressure


Also found in: Encyclopedia.

ambient pressure

the atmospheric pressure, or pressure in the environment or surrounding area. It is given a reference value of zero (0) cm H2O.
References in periodicals archive ?
To keep the problem simple, the duct pressures are taken as constants; the room pressure, the ambient pressure and the damper positions are taken as variable inputs to the air flow equations.
In low ambient pressure, which applies to upper-stage engines operating at high altitudes, aerospike nozzles behave like conventional bell nozzles.
Envergent's RTP technology works by rapidly heating biomass at ambient pressure to generate high yields of a liquid biofuel, which can be used to power electric generators or burned in industrial burners and furnaces for heat.
Their topics include crystal structure at ambient conditions, experimental studies of the electronic structure, phase transitions in chain-type crystals under ambient pressure, relaxor behavior and the nano-domain structure of doped and irradiated TlInS2 crystals, and elastic properties of low-dimensional compounds.
a] is absolute ambient pressure, V is muscle volume, [f.
Other standard advantages of the water-resistant Mac Pro Shock Case include: a sliding retractable handle, ambient pressure relief valve, oversized snap-down handles on each side, roller blade wheels for swift and safe mobility, and gasket-protected front and rear doors.
They found that moderate high pressures--between 150 MPa and 450 MPa--stabilize lipase activity in organic media, which allows processes to occur at temperatures higher that what is achievable at ambient pressure, because of enzyme denaturation and solvent evaporation.
But he is clearly flustered by all the attention and the subsequent ambient pressure surrounding the album.
RTP is a rapid thermal process in which biomass such as wood chips or straw is rapidly heated at ambient pressure to generate high yields of a pourable, liquid pyrolysis oil, which can then be burned for energy in industrial burners and furnaces or converted to green electricity.
It also incorporates absolute pressure sensors in its design that measure the ambient pressure at two-minute intervals and corrects the volume of gas delivered accordingly (Drager Australia, personal correspondence).
Since AA, HBA and BDA can be easily polymerized at high temperatures, vacuum distillation was operated from ambient pressure to 400 mm Hg to decrease the distillation temperature.
A problem in test accuracy arises with the differential gages used on most current vacuum testers that measure the departure from current ambient pressure levels.

Full browser ?