dhe 0.3.0

Downhole heat exchanger simulation

DHE (Downhole Heat Exchanger)

This project was partially founded by s3 GmbH (formerly Sustainable System Solutions) and is based on the publications [^hu-eWs1-sb], [^hu-eWs2-sb].

[^hu-eWs1-sb]: Berechnungsmodul für Erdwärmesonden

[^hu-eWs2-sb]: Erweiterung des Programms EWSfür Erdwärmesondenfelder

Installation

Build

Dependencies: rust / cargo, maturin

cd dhe_o3
maturin build --release
cd -

pip

pip install [--user] target/wheels/dhe-<version>

Run

To run the GUI:

dhe

Run the CLI:

dhe-cli -o <out> <project>

This will generate the file <out> (a csv file). See Section Output. <project> is supposed to be a project file (json format).

GUI

In the tab "Load", under "csv file", choose a load profile. This must be a ";" separated csv file with exactly two columns, without header.

• Column 1: Time [sec]
• Column 2: Power [W]

The time column has not to be equispaced - the program interpolates.

Example:

0;500
604800;500
1209600;500
1814400;500
2419200;500
3024000;500
3628800;458
4233600;458
4838400;458
5443200;458
6048000;375
6652800;375
7257600;375
7862400;375
8467200;292

Output

Output is a csv file with hourly values. Columns

1. Time [sec],
2. T_sink: Temperature of brine flowing into the exchanger [°C]
3. T_source: Temperature of brine flowing out of the exchanger [°C]

... Temperatures of the cylinder of soil around the bore hole (Index 1: axial, index 2: radial)

Bibliography