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Buried water-phase change material storage for load shifting: A parametric study

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU137096" target="_blank" >RIV/00216305:26210/20:PU137096 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://www.sciencedirect.com/science/article/pii/S0378778820314821" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378778820314821</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.enbuild.2020.110428" target="_blank" >10.1016/j.enbuild.2020.110428</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Buried water-phase change material storage for load shifting: A parametric study

  • Popis výsledku v původním jazyce

    Thermal energy storage systems based on phase change materials (PCM) are used to shift the peak load in buildings. An effective method to improve the performance of such system is to bury it in the soil to take advantage of soil’s high thermal inertia. In this study, the model of underground buried water tank integrated with PCM panels as thermal accumulators is firstly proposed for a heat pump system. The study is conducted using an experimentally validated numerical model based on a heat balance approach using the effective heat capacity method. The performances of the buried water-PCM tank and an insulated water-PCM tank were compared to determine the improvement in the system efficiency as the results of soil’s thermal inertia. A parametric study was also conducted to determine the optimal configuration and operating strategy of the buried water-PCM tank to satisfy the requirement of heat pump systems for load shifting. The outlet temperature, effective discharge duration (EDD), and total released heat were used as the indicators. The cooling capacity of the buried water-PCM tank is 24.96% higher than that of the insulated tank. The parametric study indicates that the parameters influencing the tank performance are the thermal conductivity of the PCM, length and width of the PCM panels, and heat transfer fluid velocity in the gaps between the panels. The study results are expected to serve as reference for the application of the newly proposed buried water-PCM tank in the underground engineering for load shifting.

  • Název v anglickém jazyce

    Buried water-phase change material storage for load shifting: A parametric study

  • Popis výsledku anglicky

    Thermal energy storage systems based on phase change materials (PCM) are used to shift the peak load in buildings. An effective method to improve the performance of such system is to bury it in the soil to take advantage of soil’s high thermal inertia. In this study, the model of underground buried water tank integrated with PCM panels as thermal accumulators is firstly proposed for a heat pump system. The study is conducted using an experimentally validated numerical model based on a heat balance approach using the effective heat capacity method. The performances of the buried water-PCM tank and an insulated water-PCM tank were compared to determine the improvement in the system efficiency as the results of soil’s thermal inertia. A parametric study was also conducted to determine the optimal configuration and operating strategy of the buried water-PCM tank to satisfy the requirement of heat pump systems for load shifting. The outlet temperature, effective discharge duration (EDD), and total released heat were used as the indicators. The cooling capacity of the buried water-PCM tank is 24.96% higher than that of the insulated tank. The parametric study indicates that the parameters influencing the tank performance are the thermal conductivity of the PCM, length and width of the PCM panels, and heat transfer fluid velocity in the gaps between the panels. The study results are expected to serve as reference for the application of the newly proposed buried water-PCM tank in the underground engineering for load shifting.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20303 - Thermodynamics

Návaznosti výsledku

  • 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)

Ostatní

  • Rok uplatnění

    2020

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    ENERGY AND BUILDINGS

  • ISSN

    0378-7788

  • e-ISSN

    1872-6178

  • Svazek periodika

    227

  • Číslo periodika v rámci svazku

    1

  • Stát vydavatele periodika

    CH - Švýcarská konfederace

  • Počet stran výsledku

    17

  • Strana od-do

    1-17

  • Kód UT WoS článku

    000577555300007

  • EID výsledku v databázi Scopus