ALL libraries (COBIB.SI union bibliographic/catalogue database)
  • Parametric study of an active-passive system for cooling application in buildings improved with free cooling for enhanced solidification [Elektronski vir]
    Zavrl, Eva, 1991- ...
    The present study introduces an active-passive system (APS) with phase change material (PCM) integrated into the substructure of the internal walls and ceiling for cooling. To ensure sufficient ... cooling effect of the system during the daytime cycle, the system must solidify completely during the nighttime cycle and operation costs comparable to the ones of conventional cooling systems. An air gap was formed between the primary wall and ceiling and the PCM substructure and ventilated with the cool outdoor air during the nighttime cycle. A parametric study was performed using ANSYS Fluent followed by the energy performance and operation cost analysis. Different inlet air temperature scenarios (15-20°C) were tested (suitable PCM thermal characteristics). The required solidification-time of PCM was determined. The model is validated against the experimental tests. The results show that with the current configuration, the PCM plates can be sufficiently solidified at supply air temperatures of 17°C and below. If the system is ventilated with inlet air temperatures above 17°C, additional cooling options must be considered. The study also determines the energy performance of the system under the chosen conditions and compares its feasibility to the conventional cooling systems (energy efficiency class A+++ and G air-conditioning device).
    Source: Sustainable cities and society [Elektronski vir]. - ISSN 2210-6715 (Vol. 99, Dec. 2023, str. 1-18)
    Type of material - e-article ; adult, serious
    Publish date - 2023
    Language - english
    COBISS.SI-ID - 166103555

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S2210670723005711
    Repository of the University of Ljubljana – RUL
    DOI

Shelf entry