Wi = input to the operation - can work, power, input products ...
Efficiency can be expressed as a percentage or as a per-unit decimal fraction of 1.
The input power to an electric motor is 2000 W. The output power to the shaft is 1800 W. The efficiency of the motor can be calculated as
μ = (1800 W) / (2000 W)
= 0.9
= 90%
The teoretical energy potential for a wind mill is 300 kWh at given conditions. The power produced is 70 kWh. The efficiency of the wind mill can be calculated as
μ = (70 kWh) / (300 kWh)
= 0.23
= 23%
The SI-system, unit converters, physical constants, drawing scales and more.
The ratio between heat removed and power (watt) used - EER and SEER.
Combustion gross and net calorific value.
The efficiency of the Carnot cycle.
Optimizing boilers efficiency is important to minimize fuel consumption and unwanted excess to the environment.
Performance and efficiency terminology related to heat pumps and air condition systems.
Maximum cooling tower efficiency is limited by the cooling air wet-bulb temperature.
The overall pump and fan efficiency is the ratio power gained by the fluid to the shaft power supplied.
Calculate electric motor efficiency.
Classification of heat recovery efficiencies - temperature efficiency, moisture efficiency and enthalpy efficiency - online heat exchanger efficiency calculator.
Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!
We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.
Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.
Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.
AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.
If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. You can target the Engineering ToolBox by using AdWords Managed Placements.