Emergy
Sign in to saveEmergy is the amount of energy consumed in direct and indirect transformations to make a product or service. Emergy is a measure of quality differences between different forms of energy. Emergy is an expression of all the energy used in the work processes that generate a product or service in units of one type of energy. Emergy is measured in units of emjoules, a unit referring to the available energy consumed in transformations. Emergy accounts for different forms of energy and resources (e.g. sunlight, water, fossil fuels, minerals, etc.) Each form is generated by transformation processes in
~49 min read
Encyclopedic overview
17 sectionsContents
- History
- Background
- Embodied energy
- Introduction of the term "emergy"
- Chronology
- Definitions and examples
- Accounting method
- Purpose
- Systems diagram
- Evaluation table
- Calculating unit values
- Performance indicators
- Uses
- Controversies
- See also
- Notes
- External links
Emergy is the amount of energy consumed in direct and indirect transformations to make a product or service. Emergy is a measure of quality differences between different forms of energy. Emergy is an expression of all the energy used in the work processes that generate a product or service in units of one type of energy. Emergy is measured in units of emjoules, a unit referring to the available energy consumed in transformations. Emergy accounts for different forms of energy and resources (e.g. sunlight, water, fossil fuels, minerals, etc.) Each form is generated by transformation processes in nature and each has a different ability to support work in natural and in human systems. The recognition of these quality differences is a key concept.
==History==
Excerpted from Wikipedia’s “Emergy” article, available under the CC BY-SA 4.0 licence.