Re: [TRNSYS-users] Type 56 thermal mass

To: TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org>, David BRADLEY <d.bradley@tess-inc.com>

Subject: Re: [TRNSYS-users] Type 56 thermal mass

From: Gergely László Zsolt <gergely.laszlo@gpk.bme.hu>

Date: Mon, 25 Jul 2022 10:42:39 +0000

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Thread-topic: Type 56 thermal mass

Dear All,

Still need your help with this.
Running some simulations changing capacitance values (despite the manual mentions that this value stands for the air and the furnitures and walls shall not be considered here) of the airnode and capacitance of the layers I am not convinced that calculations consider the capacitance of the walls!

Could you help me out?

Regards,

László GERGELY
PhD student, Building Energy Engineering

Budapest University of Technology and Economics

Feladó: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>, meghatalmazó: Gergely László Zsolt via TRNSYS-users <trnsys-users@lists.onebuilding.org>
Elküldve: 2022. július 22., péntek 17:48
Címzett: TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org>; David BRADLEY <d.bradley@tess-inc.com>
Másolatot kap: Gergely László Zsolt <gergely.laszlo@gpk.bme.hu>
Tárgy: [TRNSYS-users] Type 56 thermal mass

Dear All,

For some reasons I believe that my simulations do not consider thermal capacitance of my building.
I have no idea what goes wrong... I thought about overwriting the capacitance value of the zones however based on the documentation that value shall not include wall capacitance.

In the enclosed project there is a nightime setback and the problem is visible as the temperature drops as soon as the heating is off and rises as soon as it is on.

To make things in context the aim of the project is testing different options reducing heating demand.

Do you have any suggestions for overcoming the problem?
I would be grateful!

Thanks in advance,

László GERGELY
PhD student, Building Energy Engineering

Budapest University of Technology and Economics

Follow-Ups:

Re: [TRNSYS-users] Type 56 thermal mass
- From: David BRADLEY <d.bradley@tess-inc.com>

References:

[TRNSYS-users] Type 56 thermal mass
- From: Gergely László Zsolt <gergely.laszlo@gpk.bme.hu>