Jet Cooling System
Jet pump is used to produce a vacuum so water or refrigerant may evaporate at relatively low temperatures. These systems usually require a large condenser and have a low efficiency.
Jet Pump
A centrifugal pump combined with a ejector, which can replace the compressor in some refrigeration systems.
Joint
Connecting point as between two pipes.
Joule
Metric unit of heat.
Joule-Thomson Effect
The change in the temperature of a gas on its expansion through a porous plug from a higher pressure to a lower pressure.
Journal, Crankshaft
Part of shaft that contacts the bearing on the large end of the piston rod.
Junction Box
Box or container housing group of electrical terminals.