Sankey charts are a powerful visualization tool for understanding complex systems. They are particularly useful for displaying the flow of materials, energy, or information between different entities in a system. In this article, we will explore how to create Sankey charts and some of the ways they can be used to gain insights into various systems.

What is a Sankey Chart?

A Sankey chart is a type of flowchart that uses directed arrows to show the direction and magnitude of the flow of materials, energy, or information between entities in a system. It is named after its creator, Helmut Sankey, a Swiss engineer who developed the chart in the 1930s.

Sankey charts are useful because they provide a visual representation of the flow of materials or energy through a system, making it easier to identify bottlenecks, areas of waste, or opportunities for improvement. They also allow you to see how different entities in the system are connected and how they influence each other.

Creating a Sankey Chart

There are several software programs available that can be used to create Sankey charts. Some of the most popular include:

• Microsoft Visio
• Lucidchart
• SmartDraw
  *Draw.io

To create a Sankey chart using Visio, you can follow these steps:

1. Open the chart template file that you want to modify.
2. Go to the “Insert” menu and select “Flowchart.”
3. Choose “Sankey” from the options that appear on the right-hand side of the screen.
4. Drag and drop the nodes and links onto the chart to represent the flow of materials or energy in your system.
5. Customize the appearance of the chart as desired, including the colors and shapes of the nodes and links.

Step-by-step instructions for creating a Sankey chart using other software programs may differ, so be sure to follow the specific instructions provided by the software documentation.

Applications of Sankey Charts

Sankey charts have a wide range of applications, particularly in the fields of engineering, energy management, and supply chain management. Some of the ways they can be used include:

1. To identify bottlenecks in a process and determine ways to improve efficiency.
2. To examine the flow of materials or energy through a system and identify opportunities for reducing waste or increasing efficiency.
3. To visualize the impact of changes to a system, such as the introduction of a new product or the closure of a factory.
4. To compare the efficiency of different systems or processes and identify areas for improvement.

In conclusion, Sankey charts are a valuable visualization tool for understanding complex systems. They are easy to create and can be used in a variety of applications to gain insights into the flow of materials, energy, or information in a system. Whether you are an engineer, an energy manager, or a supply chain professional, Sankey charts can help you gain a better understanding of your system and identify ways to improve its efficiency and effectiveness.

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