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Looking for energyplus/jEPlus+EA examples with costs

asked 2015-02-24 05:13:48 -0600

Xandrika gravatar image

updated 2015-11-07 14:18:54 -0600

Hi everybody,

I would like to include a simple cost analysis into my parametric model. That means using cost as one of my objectives in finding the best design solution.

Are there any example files available for energyplus & jEPlus+EA that include cost effectiveness?

Would be great if you could share your experience with me?

Thanks a lot.


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answered 2015-02-25 04:26:43 -0600

Ivan Korolija gravatar image

Hi Susanne,

You can specify costs in E+ by following examples mentioned in Jason's comment. However, to use them in the jEPlus+EA as an objective you'll need to extract them from SQL. jEPlus+EA objectives can be defined in rvx (or rvi) file. Structure of the rvx file can be found here. You can see that you can apply mathematical operations when defining objectives. I assume you need a total cost which means you'll sum up individual cost outputs (extracted from sql) in objectives formula field.



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answered 2015-02-24 09:27:45 -0600

There are some examples just covering the EnergyPlus side that are included with the EnergyPlus installation. In the ExampleFiles subdirectory where EnergyPlus is installed are two files that cover different aspects of cost effectiveness. The first 5ZoneCostEst.idf shows how the ComponentCost:LineItem, ComponentCost:Reference, and ComponentCost:Adjustment objects work. These objects can be used to come up with first cost estimates for building components. You still need to provide values but the costs can be expressed as on a per area, per item, per output capacity, per volume, etc.. basis. This allows changes to the building model to be captured as changes in the first costs. For operating and lifecycle costs, the 5ZoneEconomicTariffAndLifeCycleCosts.idf file in the same directory is a good example. It shows how to use the UtilityCost objects to describe a variety of tariffs as well as using the LIfeCycleCost objects to describe other recurring and nonrecurring costs.

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thanks. I had already a look on these. Any examples for jEPlus+EA available?

Xandrika gravatar image Xandrika  ( 2015-02-24 23:49:55 -0600 )edit

@Xandrika were you able to use JEPlus+EA for cost minimization objective function?

rkbest gravatar image rkbest  ( 2016-10-24 16:28:36 -0600 )edit

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Asked: 2015-02-24 05:13:48 -0600

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Last updated: Feb 25 '15