Work, energy and power
Work is done (or energy is transferred) when an object is moved against a force, and is defined as:
In the Imperial fps system expression 1.5 gives a unit of ft lb f. For metric systems the unit is cm kg f. The SI unit of work is the joule, where 1 J = 1 N m (= 1 m2 kg s−2). Table 1.8 compares these, and other, units of work.
Power is the rate at which work is performed:
Related posts:
Compressed Air Transmission and Treatment:Inducted contaminants
Compressed Air Transmission and Treatment:Standards and legislation
ACTUATORS:Piston- Type Cylinders
THE COMPRESSOR:COMPRESSOR INSTALLATION.
THE COMPRESSOR:COMPRESSOR CLASSIFICATION AND SELECTION.
Low pressure and vacuum:Gate lock valves
Conveying characteristics:Conveying characteristics and Conveying mode.
Hydraulic fluids:Foam-resistant fluids
Hydraulic cylinders:Construction
Air Compressors, Air Treatment and Pressure Regulation:compressor types and Piston compressors
INTRODUCTION AND OVERVIE:MATHEMATICAL MODELING OF ENGINEERING PROBLEMS
BASICCONCEPTS OF THE RMODYNAMICS:BAROMETER AND THE ATMOSPHERIC PRESSURE
THE SECOND LA W OF THERMODYNAMICS:ENERGY CONVERSION EFFICIENCIES
ENTROPY:ENTROPY CHANGE OF PURE SUBSTANCES
FORCED CONVECTION:GENERAL CONSIDERATIONS FOR PIPE FLOW