A general definition of efficiency is the ratio between the useful energy or power output and the energy or power input - and can be expressed as
μ = Eo / Ei (1)
μ = efficiency
Eo = useful energy or power output(Joules, W)
Ei = energy input or power (Joules, W)
Work, heat and energy systems.
Entropy and disorder.
The ratio between heat removed and power (watt) used - EER and SEER.
Combustion gross and net calorific value.
The efficiency of the Carnot cycle.
Performance and efficiency terminology related to heat pumps and air condition systems.
Convert between cooling load units like kW/ton, COP and EER.
Calculate electric motor efficiency.
Power consumption and typical efficiencies of fans
Performance and efficiency rating of heat pumps.
Classification of heat recovery efficiencies - temperature efficiency, moisture efficiency and enthalpy efficiency - online heat exchanger efficiency calculator.
Power is the rate at which work is done or energy converted.
Power plants heat rates, thermal efficiencies, capacity factors, load factors, economic efficiencies, operational efficiencies and energy efficiencies.
Power generation from wind.