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Issue1478 Update TRV opening characteristic#1483

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annadellisola merged 4 commits into
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issue1478_TRV
Apr 2, 2026
Merged

Issue1478 Update TRV opening characteristic#1483
annadellisola merged 4 commits into
masterfrom
issue1478_TRV

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@annadellisola
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This PR closes issue #1478

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The change in the valve opening charcateristic results in a shift in time of the opening of the valves as visible in the picture below.

Image

In the current formulation the valves will start closing when the T measured is equal to TSet-P/2. Therefore valSte.y and valDym.y is equal to 0.5 when the T measured is equal to the setpoint of 21°C.

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As expected the temperatures in the different zones are mainly higher compared to previous reference, due to the change in the opening of the TRVs considering the TSet at the center of the bandwidth (instead of at the upper bound).

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@lucasverleyen
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Thanks a lot, @annadellisola, for addressing this issue!

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The change in the valve opening leads to higher mass flow rates in the beginning and lower condenser temperature for the same outlet condenser heat. The temperatures in the zones are consistently higher around the TSet defined in the TRV, as shown in the figure below.

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Similar explanation given for DetailedHouse6 holds for this example.

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@annadellisola annadellisola merged commit d3bfdb3 into master Apr 2, 2026
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@annadellisola annadellisola deleted the issue1478_TRV branch April 2, 2026 06:35
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2 participants