I want to optimize the pipe sizing

Tested for version beta 0.4.2 of the WarmingUp Design Toolkit.

The tutorial deals with optimizing the topology of a heat network. This tutorial shows the steps to find the answer to the following questions:

  1. How to minimize pipe sizing in the network?

This tutorial builds upon the preceding tutorial topic ‘I want to simulate an existing network’, see I want to simulate an existing network — Warming Up Design toolkit 0.3 documentation (readthedocs-hosted.com)

To achieve these results the following packages are used:

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The Computational Framework is used to run the workflows and create scenarios

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Within the Computational Framework CHESS is used to simulate the network.

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Within the Computational Framework the Energy Network Topology Optimizer is used.

1

How to minimize pipe sizing in the network?

1.1
1) Go to Optimize-> Pipe layout in the Tasks panel.
2) Click on the ‘Simulation settings’ tab

  1. Click on the ‘Goals and constraints’ tab

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1.2

Defining the goals:

  1. Open the goals under the tab ‘Goals’

  2. Set the goal to the desired goal, in this case ‘Minimize Pipe Sizes’

  3. Set the system lifetime in years

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1.3

Defining the constraints:

  1. Open the ‘Constraints’ tab

  2. Click on the checkboxes to turn on/off specific constraints

  3. Define the constraints as desired (the flow velocities are a pipe characteristic and are defined in the EDR database <Link to EDR>)

  4. Click the ‘Apply’ button

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1.4

Defining bounds on pipe sizes and selecting the pipe characteristics to be optimized/tuned:

  1. Open the ‘Pipes’ tab

  2. Select the ‘Tune sizing’ via the checkboxes.

  3. Setting the lower and upper bounds of the pipe sizes (Tip: these can be copied and pasted similar to in excel)

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1.5

Creating the scenario modifiers

  1. Give the scenario a distinguishable name

  2. Click the ‘Apply’ button to save the scenario modifiers

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1.6

The desired scenario modifier is now created and can be used in a scenario.

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1.7

Creating a scenario with the topo-optimizer modifier

  1. Open the tab ‘Scenario composition’

  2. Click on ‘Create’

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1.8

Creating a scenario with the topo-optimizer modifier

  1. Give the scenario a name

  2. Set the scenario as follows:

    1. Task: select ‘Optimize Pipe layout’

    2. ESDL: select the desired ESDL file

    3. Simulation step: set the time to 1 hour

    4. Apply thermal loss: Leave the box unchecked

    5. Heat Demand profiles: select ‘nothing selected’, as no heat demand is modified

    6. Heat Supply profiles: select ‘nothing selected’, as no heat demand is modified

    7. Heat network model: select ‘nothing selected’, as no CHESS parameters are modified

    8. Goals and constraints: select ‘Minimize Pipe Sizes PN6’

    9. KPIs: select ‘nothing selected’, as no KPI parameters are modified

  3. Click on ‘Apply’ to create the scenario

  4. The scenario has now been created and is ready to run

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1.9

Running the scenario

  1. Select the scenario you want to run

  2. Set the simulation period (for fast results limit this to when the peak demand occurs)

  3. Run the Scenario

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1.10

Viewing the results

There are different ways to inspect the results after optimizing the pipe layout:

  1. Under the tab “Spatial results”:

  1. It is possible to see the optimal inner diameters of the pipelines

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  2. It is possible to see the maximum flow velocity compared to a limit

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  1. Under the tab “Other results”:

  1. It is possible to see the optimization results in tabular format

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