How do you analyze a Sankey diagram?

How do you analyze a Sankey diagram?

Sankey diagrams show the flow of resources. They communicate sources and uses of the resources, materials, or costs represented. The key to reading and interpreting Sankey Diagrams is remembering that the width is proportional to the quantity represented.

What does a Sankey diagram tell you?

Sankey diagrams summarise all the energy transfers taking place in a process. This Sankey diagram for an electric lamp shows that most of the electrical energy is transferred as heat rather than light. Sankey diagram for a filament lamp. Energy can be transferred usefully, stored or dissipated .

What is a Sankey diagram and how is it interpreted?

Sankey diagrams are a type of flow diagram in which the width of the arrows is proportional to the flow rate. The illustration shows a Sankey diagram that represents all the primary energy that flows into a factory. The widths of the bands are linearly proportional to energy production, utilization and loss.

What are Sankey diagrams used for?

A Sankey diagram is used for visualization of material, cost or energy flows. They show energy or mass flows with arrows proportional to the flow quantity.

How do you use a Sankey chart?

1. Overview. The Sankey diagram displays how quantities are distributed among items between two or more stages.
2. Add a Sankey diagram. Choose the Data Visualization or Re-Visualize option from the toolbar and select Sankey Diagram.
3. Change link color and width.
4. Change node color.
5. Change labels and tooltips.
6. See also.

What is energy flow chart?

Energy flow diagrams. Energy flow diagrams show what is happening to a particular type of energy as it is used or changed in some process or situation. Energy flow diagrams can be extended to include other forms of energy, such as light energy, electrical energy and heat energy.

What does it mean to say energy is dissipated?

Dissipation is a term that is often used to describe ways in which energy is wasted. Any energy that is not transferred to useful energy stores is said to be wasted because it is lost to the surroundings. In a mechanical system, energy is dissipated when two surfaces rub together.

Where can I find a Sankey diagram for energy?

The US Department of Energy’s Lawrence Livermore Laboratory maintains a site of Sankey diagrams, including US energy flow and carbon flow. Eurostat, the Statistical Office of the European Union, has developed an interactive Sankey web tool to visualise energy data by means of flow diagrams.

How is the width of the Sankey diagram proportional to the flow rate?

(July 2015) ( Learn how and when to remove this template message) Sankey diagrams are a type of flow diagram in which the width of the arrows is proportional to the flow rate. The illustration shows a Sankey diagram that represents all the primary energy that flows into a factory.

How did the IEA create the Sankey diagram?

The International Energy Agency (IEA) created an interactive Sankey web application that details the flow of energy for the entire planet. Users can select specific countries, points of time back to 1973, and modify the arrangement of various flows within the Sankey diagram.

When did Charles Minard create the first Sankey diagram?

One of the most famous Sankey diagrams is Charles Minard ‘s Map of Napoleon’s Russian Campaign of 1812. It is a flow map, overlaying a Sankey diagram onto a geographical map. It was created in 1869, predating Sankey’s first Sankey diagram of 1898.