A Sankey diagram for energy flow analysis
Description
A Sankey diagram for energy flow analysis is a visual tool that illustrates the transfer and transformation of energy within a system. It consists of nodes representing energy sources, conversion processes, and end - uses, connected by arrows or streams whose widths are proportional to the amount of energy flowing through them. The diagram starts with primary energy sources such as coal, oil, natural gas, solar, wind, and nuclear. These sources are connected to energy conversion processes like power plants, refineries, or renewable energy converters. From there, the diagram shows the distribution of energy to various end - use sectors such as residential, commercial, industrial, and transportation. Each segment of the diagram is labeled with the energy quantity or percentage to provide a quantitative understanding of the flow.
Interpretation and Applications
This diagram offers valuable insights into energy systems. It clearly shows where energy is lost during conversion and transmission. For example, a wide stream from a coal power plant to electricity generation that narrows significantly when flowing to end - users indicates substantial energy loss, often in the form of heat. This highlights inefficiencies and areas where improvements can be made.
The diagram also helps in understanding the contribution of different energy sources to the overall energy supply and the dependence of various sectors on specific energy types. It can reveal how much energy is derived from renewable versus non - renewable sources and track changes over time as energy policies and technologies evolve.
In summary, the Sankey diagram for energy flow analysis is an effective way to visualize complex energy systems. It aids in identifying inefficiencies, making informed decisions about energy infrastructure investments, and developing strategies for more sustainable and efficient energy use.