· automotive - carburetion and controls · biological - pharmaceutical distillation
DESCRIPTION
Technologies that use low pressure environments. · automotive - carburetion and controls · biological - pharmaceutical distillation · braking - trains · cathode ray tubes · environmental controls and cleanup · food procession · information transfer · lighting - PowerPoint PPT PresentationTRANSCRIPT
automotive - carburetion and controlsbiological - pharmaceutical distillationbraking - trainscathode ray tubesenvironmental controls and cleanupfood processioninformation transferlightingmaterials characterizationmaterials handlingmaterials processingrefrigerationspace exploration and sciencessemiconductorsthin film growthvacuum coatings and brazing
Technologies that use low pressure environments
Carbon nanotube electron emission device
Large vacuum brazing oven for automotive air conditioning assemblies
Computer hard drive assembly
Pressure ranges for low pressure technologies
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Pumps and gauges
• Check a rotary vane pump here.
• Check an ion gauge here.
VA CU UMCH AM BE R
G AUG E
PU MPM O T O R
x VA LVE
Expanding Balloon in Vacuum
Latent Heat of VaporizationP
r ess
ure
mm
Hg
( not
t o s
cal e
)
Temperature oC (not to scale)
Pc218 atm
760
4.58
Tc374 o10
0
o0.16 o
Liquid
Vapor
Solid
SublimationCurve
MeltingCurve
Vapor PressureCurve
Triple Pointsupercooling
Gauge
Pump Motor
Valve
Adiabatic Expansion of Moist AirThe Cloud Chamber
For
ce(P
a)
Suction Cup Area (m2)