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 sā2). Table 1.8 compares these, and other, units of work.
Power is the rate at which work is performed:
Related posts:
Case studies:Variable speed drives on heating, ventilating, air conditioning {HVAC) system pumps.
Benefits, drawbacks and operational issues:Resonance and rotor dynamics
Applications on pneumatic:Air gauging
Energy and Efficiency:Theory of two level systems
Air flow rate evaluation:Stepped pipeline systems
Particle degradation:Operating problems and Filtration problems
Low pressure and vacuum:Air venting and Entrainment devices
Optimizing and up-rating of existing systems:System not capable of duty
Conveying capability:Low pressure conveying ā Part II
Conveying characteristics:Single phase flow and The Darcy equation for pressure drop.
Hydraulic motors:Basic principles
Hydraulic pumps:Pump performance
Introduction to hydraulics:Introduction and background
Hydraulic and Pneumatic Accessories:cost of air leaks
ENERGY TRANSFER BY HEAT,WORK,AND MASS:CONSERVATION OF MASS PRINCIPLE