Basic Thermodynamics of Engines Flashcards
Review
Temperature at which all molecules cease to move.
Zero absolute
Distance traveled per unit time. (m/s, km/hr)
Speed
Acceleration due to gravity in SI and Customary units(English units)
9.80 m/s; 32.2 ft/s2
Volume conversions in SI and English units.
1 m3 = 1000 L; 1 ft3 = 1728 in3
Unit of Force
Newton (N) = kg.m/s2; lbf
Accomplished when force acts through a distance.
Work
Unit for Work
Joule (J) = N.m; ft-lb
Capacity for doing work
Energy
Rate of doing work. It is the amount of work accomplished per unit of time.
Power
Unit for power
Watts (W); foot-pound per second (ft-lb/s); horsepower (hp)
1 hp in ft-lb/s
550
Amount of force exerted on a unit area by a gas or other fluid.
Power
Unit for power
Pascal (Pa) = N/m2; Pounds per square inch (psi)
Pressure that air exerts on any body in the atmosphere.
Barometric pressure
Trapped pressure typically measured by gages which indicate only the excess of the trapped pressure over the barometric pressure.
Gage pressure