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Modelica District Heating Heat Pump

asked 2022-12-19 22:05:48 -0500

updated 2022-12-20 09:21:45 -0500


I am working on a Modelica model of a District Energy System built using the geojson to modelica translator. I am hoping for some advice on a modification I would like to make.

The GMT builds a district energy system with a Central Heating Plant (boiler) and Central Cooling Plant (chiller). I would like to switch the heating plant to use a heat pump and also use the resulting cool evaporator fluid to do some "shared" cooling for the chilled water loop.

Anyway it looks like I can do this using the Heat Pump Heat Exchanger component as provided in the Modelica Buildings library. I think I should probably use the component by placing it inside the Central Heating Plant and basically replacing the boiler components. I would also need to bring in the chilled water return to make this work.

Is this a good plan? Is there a simpler way to achieve what I want? I didn't find any other components that seemed like a good fit for my needs.

Thanks! Graham

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answered 2022-12-21 13:54:07 -0500

That seems to be the right path. You may also want to look at Buildings.Experimental.DHC.EnergyTransferStations.Combined.ChillerBorefield and at Buildings.Experimental.DHC.EnergyTransferStations.Combined.HeatPumpHeatExchanger to see ETS with heat pumps and geothermal coupling.

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Thank you Michael!

glinn07's avatar glinn07  ( 2022-12-21 17:32:21 -0500 )edit

answered 2022-12-22 01:42:03 -0500


Maybe you should try « fluid cooler » component,

Here’s a link to the help:

Or maybe this one can help :

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Asked: 2022-12-19 22:05:48 -0500

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Last updated: Dec 22 '22