> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/dragonfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/dragonfly-primer/components/5_districtthermal/horizontal_pipe_parameter.md).

# Horizontal Pipe Parameter

![](/files/OXMBLXAktgpW6IKzdch8)

![](/files/ZR34pIReXLC21WSaPM6i) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Horizontal%20Pipe%20Parameter.py)

Create a HorizontalPipeParameter object that can be used to customize the properties of horizontal pipes contained within ThermalConnectors.

The output of this component can be used with the "DF GHE Thermal Loop" component.

### Inputs

* **buried\_depth**

The buried depth of the pipes in Rhino model units (eg. Meters, Feet, etc.). (Default: 1.5 meters).

* **diameter\_ratio**

A number for the ratio of pipe outer diameter to pipe wall thickness. (Default: 11).

* **pressure\_drop**

A number for the pressure drop in pascals per meter of pipe. (Default: 300).

* **insulation\_conduct**

A positive number for the conductivity of the pipe insulation material in W/m-K. If no insulation exists, this value should be a virtual insulation layer of soil since this value must be greater than zero. (Default: 3.0).

* **insulation\_thick**

A positive number for the thickness of pipe insulation in Rhino model units (eg. Meters, Feet, etc.). If no insulation exists, this value should be a virtual insulation layer of soil since this value must be greater than zero. (Default: 0.2 meters).

* **hydraulic\_diameter**

A number to specify the size of the hydraulic diameter in meters. If unspecified, the hydraulic diameter will be autosized.

* **pump\_head**

A number for the design pressure of the ambient loop pump in Pa. If unspecified, the pump pressure will be autosized.

* **pump\_flow**

A number for the design volume flow rate of the ambient loop pump in m3/s. If unspecified, the pump flow rate will be autosized.

### Outputs

* **horiz\_pipe**

A HorizontalPipeParameter object that can be plugged into the "DF GHE Thermal Loop" component to customize the properties of horizonal pipes in a District Energy System (DES) simulation.


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