Energy efficiency optimization of PCM and aerogel-filled multiple glazing windows

Zhang, Shu; Hu, Wanyu; Li, Dong; Chen, Feng; Arıcı, Müslüm; Yıldız, Çağatay; Zhang, Xin; Ma, Yuxin

doi:10.1016/j.energy.2021.119916

Cited by 76 publications

(18 citation statements)

References 38 publications

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“…The governing equations were discretized by the software using a finite element method, and iteratively solved by implicit scheme, with second order accuracy. Even if this numerical model was validated in previous studies, simulation results were compared with those from previously published literature [5,17].…”

Section: Numerical Methods and Validationmentioning

confidence: 99%

“…By storing and releasing latent heat, these systems improve the thermal performance of buildings and reduce on-peak electricity demand [4]. Moreover, LHTES technologies provide a high energy-storage density per unit of mass, at near-constant temperatures, compared to other thermal energy storage (TES) solutions [5]. Phase-change materials (PCMs) are used as LHTES technologies inside building components, and their application ranges from active to passive heating and cooling systems, including integration into glazed surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…The aim of the research was to investigate to what extent the thermal and physical properties-like density, specific heat, thermal conductivity, and thickness-of silica aerogel can affect the thermal performance of windows in cold environments. Finally, in 2021, Shu Zhang et al numerically examined and compared the energy performance of ten different window configurations under the severe cold climate of China [5]. The study included double-and triple-glass layered windows, integrated with silica aerogel and/or PCM.…”

Section: Introductionmentioning

confidence: 99%

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Simplified Thermal Performance Evaluation of a PCM-Filled Triple-Glazed Window under Arctic Climate Conditions

2021

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This paper evaluates the thermal performance of a triple-glazed glass window filled with a phase-change material (PCM) compared to the performance of a traditional triple-glazed window with air gaps. The chosen PCM was paraffin wax. A mathematical model to simulate heat transfer within the system was presented. A commercially available software, COMSOL Multiphysics, was used to numerically solve the governing equations. The analysis was carried out for the representative days of different seasons using three types of paraffin wax (5, 10, and 15) that have different melting-temperature ranges. Particularly, the study considers the unique climatic conditions of the Arctic region. Results showed that by integrating a PCM into the cavity of triple-glazing, thermal performance during summer season of the window was enhanced, while for spring and autumn thermal performance was affected by the type of paraffin selected. The thermal performance of glass windows during winter did not change with PCM integration.

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Section: Numerical Methods and Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simplified Thermal Performance Evaluation of a PCM-Filled Triple-Glazed Window under Arctic Climate Conditions

2021

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“…An experimental study on the thermal and optical performance of a passive solar wall, consisting of silica aerogel and PCM, showed that the passive wall can keep the indoor air temperature 9°C higher than outside air and provide up to 500 lux to indoor environment ( Berthou et al., 2015 ). The optimization on the geometrical and thermophysical parameters of PCM and aerogel-filled multiple glazing indicates that the energy-saving performance is highly dependent on the optical properties of glass, in the condition that the radiation is above 2.5 μm ( Zhang et al., 2021 ). A comprehensive review was conducted on the optical and thermal performance of PCM glazing for thermal energy storage and solar transmission ( Li et al., 2020b ).…”

Section: Aerogel Production Component Prefabrication and Building Applicationsmentioning

confidence: 99%

Artificial neural network-based smart aerogel glazing in low-energy buildings: A state-of-the-art review

Zhou

2021

iScience

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“…Similarly, combining phase change material (PCM) into a building envelope has proved to be an interesting technique due to its high thermal storage capacity [21]. PCM has been used as part of building compounds to regulate the thermal environment and save energy [22,23], such as wallboard, floor, roof, and window [24,25]. Moreover, PCM can be used in different seasons, countries, and climates by designing different thermal parameters, combination methods, and positions within the building envelope [26].…”

mentioning

confidence: 99%

Simulation of the Hygrothermal Behavior of a Building Envelope Based on Phase Change Materials and a Bio-Based Concrete

Wu¹,

Rahim²,

Li³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

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Phase Change Materials (PCMs) have high thermal inertia, and hemp concrete (HC), a bio-based concrete, has strong hygroscopic behavior. In previous studies, PCM has been extensively combined with many materials, however, most of these studies focused on thermal properties while neglecting hygroscopic aspects. In this study, the two materials have been combined into a building envelope and the related hygrothermal properties have been studied. In particular, numerical studies have been performed to investigate the temperature and relative humidity behavior inside the HC, and the effect of adding PCM on the hygrothermal behavior of the HC. The results show that there is a high coupling between temperature and relative humidity inside the HC, since the relative humidity changes on the second and third days are different, with values of 8% and 4%, respectively. Also, the variation of relative humidity with temperature indicates the dominant influence of temperature on relative humidity variation. With the presence of PCM, the temperature variation inside the HC is damped due to the high thermal inertia of the PCM, which also leads to suppression of moisture evaporation and thus damping of relative humidity variation. On the second and third days, the temperature changes at the central position are reduced by 4.6% and 5.1%, compared to the quarter position. For the relative humidity change, the reductions are 5.3% and 5.4% on the second and third days, respectively. Therefore, PCM, with high thermal inertia, acts as a temperature damper and has the potential to increase the moisture buffering capacity inside the HC. This makes it possible for such a combined envelope to have both thermal and hygric inertia. KEYWORDSPhase change material (PCM); bio-based concrete; passive building envelope; heat and moisture transfer; hygrothermal performance Nomenclature C hc heat capacity of HC (J/(kg•K)) C Ã effective specific heat capacity of PCM (J/(kg•K)) K w liquid water permeability (kg/(Pa•m•s)) L v heat of vaporization (J/kg) M w molar mass of water (kg/mol) p v,sat saturation pressure (Pa) q stisosteric heat (J/kg)

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Energy efficiency optimization of PCM and aerogel-filled multiple glazing windows

Cited by 76 publications

References 38 publications

Simplified Thermal Performance Evaluation of a PCM-Filled Triple-Glazed Window under Arctic Climate Conditions

Simplified Thermal Performance Evaluation of a PCM-Filled Triple-Glazed Window under Arctic Climate Conditions

Artificial neural network-based smart aerogel glazing in low-energy buildings: A state-of-the-art review

Simulation of the Hygrothermal Behavior of a Building Envelope Based on Phase Change Materials and a Bio-Based Concrete

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