Thermal efficiency of a modified thermal storage wall containing phase change material in comparative test periods

Krasoń, Joanna; Lichołai, Lech

doi:10.1051/e3sconf/20184900059

Cited by 5 publications

(5 citation statements)

References 15 publications

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“…Preliminary studies using this solution were conducted under real climatic conditions. During periods of large temperature fluctuations between the external and internal environment, tests confirmed the reduction in fluctuations and stabilization of the internal air temperature in the test chamber [20]. Most analyses conducted on PCM-modified ceramic composites have mainly been concerned with external barriers without a glazing layer.…”

Section: Application Of Pcm In Thermal Storage Wallmentioning

confidence: 79%

The Effects of Using a Trombe Wall Modified with a Phase Change Material, from the Perspective of a Building’s Life Cycle

Żelazna,

Lichołai,

Krasoń

et al. 2023

Energies

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The increasing costs related to the use of primary energy carriers, and greater social awareness related to the need for energy saving, necessitate the use of renewable energy sources, including solar radiation. The Trombe wall (thermal storage wall—TSW) is an indirect passive solar energy system solution, aimed at obtaining, storing, and transferring thermal energy into buildings. However, there is no comprehensive information on the impact of the use of such solutions on environmental performance in the life cycle of buildings, especially those located in temperate climates. The aim of this paper is therefore to determine the environmental impact of the construction of barriers using phase change materials (PCM) from the perspective of the life cycle of a model building conforming to the current Polish energy standard (EP < 70 kWh/(m2∙yr)). The subject of the research is the structure of a TSW using phase change materials and a reference wall with a maximum overall heat transfer coefficient of 0.2 W/m2K. A comprehensive computational model of a residential building located in Rzeszów, Poland, was created, taking into account the thermal parameters of the analyzed structure of the wall and its operation under real, specific climatic conditions, as well as the environmental characteristics. High-quality input data (based on real, long-term measurements) were used to conduct a Life Cycle Assessment of the analyzed variants. As a result, the energetic and environmental efficiency of the analyzed thermal storage wall, from the perspective of the whole building’s life cycle, were assessed. According to the analyzed data, a TSW modified with paraffin enables the reduction of the energy requirements for heating by 11.3%, and the payback period of the environmental load does not exceed 1 (GWP) and 5 (IMPACT2002+) years, which were lower than the monitored period of operation.

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Section: Application Of Pcm In Thermal Storage Wallmentioning

confidence: 79%

The Effects of Using a Trombe Wall Modified with a Phase Change Material, from the Perspective of a Building’s Life Cycle

Żelazna,

Lichołai,

Krasoń

et al. 2023

Energies

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“…To prevent mold growth, the permissible water vapor pressure in the room, p i,ISO can be 80% of the pressure specified in the formula (14):…”

Section: M2-avoiding Mold Growth On the Basis Of Determining The Permmentioning

confidence: 99%

“…In any case of mold, corrective actions must be taken to eliminate the cause. When the problem of condensation appears in the barrier, various solutions should be applied to repair or modify the structure of the barrier [8,13], at the same time stabilizing the temperature of the internal surface of the barrier, and additives may be applied to modify this barrier [14,15]. Such solutions will also improve the indoor climate, reducing room temperature fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Methods for Determining Mold Development and Condensation on the Surface of Building Barriers

et al. 2019

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The article presents four equivalent methods for checking mold growth on the surface of building barriers and checking water vapor condensation on their surface. Each method applies to two parallel phenomena that may occur on a building barrier. The first method is to calculate and compare temperature factors. In the second method, the characteristic humidity in the room is calculated and compared. The third method is to calculate and compare the characteristic temperatures in the room. The fourth method is based on the calculation and comparison of characteristic water vapor pressures. Three boundary conditions are presented for each method and phenomenon: when a given phenomenon can occur, when it begins or ends, and when it does not occur. The presented methods systematize the approach to the problem of mold development and surface condensation. The presented calculation results relate to the selected building barrier functioning in specific indoor and outdoor climate conditions. The calculation results confirm the compliance of the presented methods in identifying the phenomenon of mold growth or condensation on the surface of the barrier. A graphical interpretation of the results for each method with periods of occurrence or absence of a given phenomenon is also presented.

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“…In these walls, PCM is used in different places. It is placed in the masonry layer or in the cement mortar, creating a composite [30][31][32]. PCM can be placed as a separate layer connected to the masonry structure, located on the glazing side [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Thermal Efficiency of Trombe Wall in the South Facade of a Frame Building

Miąsik

Krasoń

2021

Energies

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The article presents the possibility of using a mass collector-storage wall (CSW), integrated into the structure of a building with a light skeleton structure. The considered system is a proposal for an energy-saving solution that can be used in buildings with various utility purposes. The article presents the results of experimental tests of a collector-storage wall mounted in the space of the skeleton structure of the southern facade of a building for the period of one year, as well as the results of numerical simulation. In the summer, the influence of the use of heat-insulating roller shutters on limiting overheating of the chamber interior was investigated. The effect of using the roller shutters is a reduction in the average value of the heat flux by about 77%. In the winter, the energy efficiency of the wall was tested. The obtained effect is energy consumption during the heating season at a level comparable to a wall with a traditional structure with a coefficient of U = 0.30 W/(m2K). The results of the numerical tests showed high agreement with the direct results, which provides a basis for the use of such simulations in further research on the search for the optimal structure of a collector-storage wall.

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Thermal efficiency of a modified thermal storage wall containing phase change material in comparative test periods

Cited by 5 publications

References 15 publications

The Effects of Using a Trombe Wall Modified with a Phase Change Material, from the Perspective of a Building’s Life Cycle

The Effects of Using a Trombe Wall Modified with a Phase Change Material, from the Perspective of a Building’s Life Cycle

Methods for Determining Mold Development and Condensation on the Surface of Building Barriers

Thermal Efficiency of Trombe Wall in the South Facade of a Frame Building

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