Laboratory Testing of Different Melting Temperature Phase Change Materials Under Four Season Conditions for Thermal Energy Storage in Building Envelope

Ruta, Ruta; VANAGA, Ruta; Narbuts, Jānis; FREIMANIS, Ritvars; BLUMBERGA, Andra

doi:10.46855/energy-proceedings-9391

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Figure 9 illustrates the results of a steady-state experiment conducted in a previous study [42] by our team of researchers. A series of experiments were performed to compare the behavior of two distinct PCMs during four different seasons, using the testing conditions outlined in Section 2.3.…”

Section: Steady-state Experimentsmentioning

confidence: 99%

Performance Assessment of Two Different Phase Change Materials for Thermal Energy Storage in Building Envelopes

et al. 2023

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To meet the 2050 EU decarbonization goals, there is a need for new and innovative ideas to increase energy efficiency, which includes reducing the energy consumption of buildings and increasing the use of on-site renewable energy sources. One possible solution for achieving efficient thermal energy transition in the building sector is to assign new functionalities to the building envelope. The building envelope can function as a thermal energy storage system, which can help compensate for irregularities in solar energy availability. This can be accomplished by utilizing phase change materials as the energy storage medium in the building envelope. In this paper, two phase change materials with different melting temperatures of 21 °C and 28 °C are compared for their application in a dynamic solar building envelope. Both experimental and numerical studies were conducted within the scope of this study. The laboratory testing involved simulating the conditions of the four seasons through steady-state and dynamic experiments. The performance of the phase change materials was evaluated using a small-scale PASLINK test stand that imitates indoor and outdoor conditions. A numerical model of a small-scale building envelope was created using data from laboratory tests. The purpose of this model was to investigate how the tested phase change materials perform under different climate conditions. The experimental findings show that RT21HC is better at storing thermal energy in the PCM and releasing it into the indoor area than RT28HC. On the other hand, the numerical simulation results demonstrate that RT28HC has an advantage in terms of thermal storage capacity in climates found in Southern Europe, as it prevents overheating of the room.

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Section: Steady-state Experimentsmentioning

confidence: 99%

Performance Assessment of Two Different Phase Change Materials for Thermal Energy Storage in Building Envelopes

et al. 2023

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Revolutionizing the Building Envelope: A Comprehensive Scientific Review of Innovative Technologies for Reduced Emissions

Narbuts,

Vanaga

2023

Environmental and Climate Technologies

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This paper reviews innovative building envelope technologies that can improve total building energy efficiency and reduce greenhouse gas emissions. The building envelope has a significant impact on energy and thermal performance, making various technologies like phase change materials, aerogel, and active and adaptive systems essential for enhancing the building envelope’s energy efficiency. Phase change materials reduce energy consumption by lowering peak heating and cooling loads, improving thermal comfort. Paraffin wax is considered the most dependable phase change material for building envelopes, as it can decrease energy consumption for heating and cooling. Study shows that active PCM thermal energy storage system can reduce room temperature by 6.8 °C in summer. Aerogel, in comparison, is recognized for its exceptional insulation capabilities and low density that minimize heat transfer and boost thermal insulation in buildings. Silica aerogel’s outstanding feature is its capacity to offer thermal performance that surpasses traditional insulation materials by 2–4 times, thereby delivering substantial energy savings of up to 35 %. Active and adaptive systems, such as smart windows and kinetic facades, enable real-time control of building envelope performance, improving energy efficiency and indoor comfort. Smart windows can lead to annual energy savings up to 35.9 kWh/m2 compared to traditional windows, and kinetic facades can reduce cooling loads for buildings up to 21 %. The review assesses various adaptive facade solutions for their suitability in diverse climate zones, versatility in application and energy efficiency. Despite the existence of some limitations and challenges, such as high costs and insufficient understanding of their long-term performance, the continuous development and deployment of these technologies can still yield a significant contribution to improving building energy efficiency and mitigating greenhouse gas emissions.

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Laboratory Testing of Different Melting Temperature Phase Change Materials Under Four Season Conditions for Thermal Energy Storage in Building Envelope

Abstract: Selection and peer-review under responsibility of the scientific committee of the 13 th Int. Conf. on Applied Energy (ICAE2021).

Cited by 2 publications

References 7 publications

Performance Assessment of Two Different Phase Change Materials for Thermal Energy Storage in Building Envelopes

Performance Assessment of Two Different Phase Change Materials for Thermal Energy Storage in Building Envelopes

Revolutionizing the Building Envelope: A Comprehensive Scientific Review of Innovative Technologies for Reduced Emissions

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