Thermally activated wall panels with microencapsulated PCM: comparison of 1D and 3D models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU130179" target="_blank" >RIV/00216305:26210/19:PU130179 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.tandfonline.com/doi/full/10.1080/19401493.2018.1543350" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/19401493.2018.1543350</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/19401493.2018.1543350" target="_blank" >10.1080/19401493.2018.1543350</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermally activated wall panels with microencapsulated PCM: comparison of 1D and 3D models

Popis výsledku v původním jazyce

The paper deals with the comparison of the one-dimensional (1D) and three-dimensional (3D) models of a thermally activated wall panel with a microencapsulated phase change material. The 3D model was created in the off-the-shelf simulation tool COMSOL Multiphysics. The 1D model was an in-house developed TRNSYS type. The main advantage of the 1D model is the short computation time but it comes at the expense of lower accuracy and less detailed results. In most building performance simulations, however, detailed knowledge of the temperature distribution over the surface of a wall is not important. For this reason, the results of both models were compared in terms of the mean surface temperature of the wall panels, the outlet water temperature, and the overall heating and cooling capacity of the panels. The two models provided very similar results for the practical range of water flow rates. The mass flow rate of water had a relatively small influence on the mean surface temperature and the heating and cooling capacity of the panels. For the one-tube mass flow rates of water between 0.25 and 2 g/s, the mean surface temperature was in the range of 28–29.5 C in the heating scenario and 21–21.5C in the cooling scenario, with the heating and cooling capacity ranges of 65 W/m2 to 75 W/m2 and 35 W/m2 to 40 W/m2, respectively.

Název v anglickém jazyce

Thermally activated wall panels with microencapsulated PCM: comparison of 1D and 3D models

Popis výsledku anglicky

The paper deals with the comparison of the one-dimensional (1D) and three-dimensional (3D) models of a thermally activated wall panel with a microencapsulated phase change material. The 3D model was created in the off-the-shelf simulation tool COMSOL Multiphysics. The 1D model was an in-house developed TRNSYS type. The main advantage of the 1D model is the short computation time but it comes at the expense of lower accuracy and less detailed results. In most building performance simulations, however, detailed knowledge of the temperature distribution over the surface of a wall is not important. For this reason, the results of both models were compared in terms of the mean surface temperature of the wall panels, the outlet water temperature, and the overall heating and cooling capacity of the panels. The two models provided very similar results for the practical range of water flow rates. The mass flow rate of water had a relatively small influence on the mean surface temperature and the heating and cooling capacity of the panels. For the one-tube mass flow rates of water between 0.25 and 2 g/s, the mean surface temperature was in the range of 28–29.5 C in the heating scenario and 21–21.5C in the cooling scenario, with the heating and cooling capacity ranges of 65 W/m2 to 75 W/m2 and 35 W/m2 to 40 W/m2, respectively.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Building Performance Simulation

ISSN

1940-1493

e-ISSN

1940-1507

Svazek periodika

12

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

404-419

Kód UT WoS článku

000463106300004

EID výsledku v databázi Scopus

2-s2.0-85057611456