# Fourth Generation Thermal Loop

![](/files/melHN4MeSPbYnSHqJAql)

![](/files/AwREptkC3wlChkXmjold) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Fourth%20Generation%20Thermal%20Loop.py)

Create an Fourth Generation Loop for a District Energy Simulation (DES) simulation.

This includes a central hot and chilled water plant for the district.

### Inputs

* **chilled\_temp**

A number for the temperature of chilled water in the DES in degrees Celsius. (Default: 6).

* **hot\_temp**

A number for the temperature of hot water in the DES in degrees Celsius. (Default: 54).

* **name**

Text to be used for the name and identifier of the Thermal Loop. If no name is provided, it will be "unnamed".

### Outputs

* **report**

Reports, errors, warnings, etc.

* **des\_loop**

A Dragonfly Thermal Loop object possessing all infrastructure for a District Energy Simulation (DES) simulation. This should be connected to the loop\_ input of the "DF Model to GeoJSON" component.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.ladybug.tools/dragonfly-primer/components/5_districtthermal/fourth_generation_thermal_loop.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.