Numerical study on the winter thermal performance and energy saving potential of thermo-activated PCM composite wall in existing buildings

Chen, Sarula; Yang, Yang; Olomi, Chris; Zhu, Li

doi:10.1007/s12273-019-0575-8

Cited by 25 publications

(7 citation statements)

References 46 publications

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“…Padala et al [ 15 ] explored the use of a PCM in a mixture for masonry blocks to determine the ideal mix proportions to attain the best mechanical, durability-related, and thermal characteristics of these mixes. Chen et al [ 16 ] investigated the thermal performance of a thermo-activated PCM mixture integrated into a wall for energy saving purposes during winter. Gholamibozanjani et al [ 17 ] experimentally examined incorporating PCMs to conserve energy inside huts over the seasons of a year.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Heat Transfer for NePCM-Melting-Based Thermal Energy of Finned Heat Pipe

et al. 2021

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Using phase change materials (PCMs) in energy storage systems provides various advantages such as energy storage at a nearly constant temperature and higher energy density. In this study, we aimed to conduct a numerical simulation for augmenting a PCM’s melting performance within multiple tubes, including branched fins. The suspension contained Al2O3/n-octadecane paraffin, and four cases were considered based on a number of heated fins. A numerical algorithm based on the finite element method (FEM) was applied to solve the dimensionless governing system. The average liquid fraction was computed over the considered flow area. The key parameters are the time parameter (100 ≤t≤600 s) and the nanoparticles’ volume fraction (0%≤φ≤8%). The major outcomes revealed that the flow structures, the irreversibility of the system, and the melting process can be controlled by increasing/decreasing number of the heated fins. Additionally, case four, in which eight heated fins were considered, produced the largest average liquid fraction values.

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Section: Introductionmentioning

confidence: 99%

Enhanced Heat Transfer for NePCM-Melting-Based Thermal Energy of Finned Heat Pipe

et al. 2021

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“…The research on TABS embedded in building walls has shown that this technology can provide energy savings for heating by a factor ranging between 40 and 75% [39], [41], [42]. Several studies developed theoretical models validated with experimental.…”

Section: Discussionmentioning

confidence: 99%

“…TABS embedded have been combined from phase change materials (PCM) [23]- [26], [40], [41] to acoustic absorber panels [49]; with a reduction in the indoor temperature from 0.4 to 4.7°C. On the other hand, TABS are mostly applied to cooling and embedded in roofs with an indoor temperature from 21 to 29.6°C.…”

Section: Discussionmentioning

confidence: 99%

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A Review of Thermally Activated Building Systems (TABS) for Improving the Thermal Behavior of Buildings

Villar-Ramos¹,

Hernández-Pérez²,

Aguilar-Castro³

et al. 2022

Preprint

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In recent years, several alternatives for improving the thermal comfort conditions inside buildings have been proposed. Among these alternatives, Thermally Activated Building Systems (TABS) have become of interest due to the benefits this technology brings to the building sector. The TABS are embedded in different building components and exchange heat with building envelope to improve the indoor air temperature. This review presents relevant results presented in the literature on the thermal behavior of TABS, the different types of TABS configurations, and the main parameters of TABS studied such as pipe separation, fluid inlet temperature, fluid velocity, and volumetric flow rate. The potential of TABS to improve thermal comfort conditions and provide energy savings is also discussed. Further, this study presents the different modes of application.

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“…They have concluded that the percentage of energy savings with particular PCMs depends on the city's location. A numerical investigation using ANSYS FLUENT has been carried out by Chen et al [21] to study the heat transfer through the thermo-activated phase change material composite wall. They have reported that the thermal activation during winter improves the thermal performance of a composite wall with PCM integration.…”

Section: Introductionmentioning

confidence: 99%

Thermal management analysis of PCM integration in building using a novel performance parameter - PCM effectiveness index

Prakash¹,

Ranganathan

Vincent³

et al. 2022

THERM SCI

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Integration of phase change material (PCM) in walls and roof of a building is done to augment human comfort at places where variation of local diurnal temperature of ambient air is extensive. An exhaustive tool to study on year-round thermal effect due to solar radiation falling on a building is generally required to identify the correct PCM and the portion of a year that warrants better thermal management. The transient behavior associated with PCM heat transfer through building roof and walls vary in accordance with location and orientation of the building and the prevailing seasons. Hence, it becomes necessary to carry out a detailed analysis with the integration of PCM layers and to collect information with suitable theoretical approach as experimental study on energy performance of a building is time-consuming and expensive. In this paper, a three-dimensional building model has been developed and analyzed using ANSYS FLUENT for performing CFD analysis for comparing two identical buildings with and without PCM located at Chennai. PCM was integrated in roof and walls of the building and analysis was carried out for different days of the year. A novel concept of PCM effectiveness index is introduced to measure the thermal performance due to PCM integration in building. This novel concept is useful for building engineers to measure the effectiveness of PCM integration and to select the correct PCM for thermal management in buildings at any location and time of the year.

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Numerical study on the winter thermal performance and energy saving potential of thermo-activated PCM composite wall in existing buildings

Cited by 25 publications

References 46 publications

Enhanced Heat Transfer for NePCM-Melting-Based Thermal Energy of Finned Heat Pipe

Enhanced Heat Transfer for NePCM-Melting-Based Thermal Energy of Finned Heat Pipe

A Review of Thermally Activated Building Systems (TABS) for Improving the Thermal Behavior of Buildings

Thermal management analysis of PCM integration in building using a novel performance parameter - PCM effectiveness index

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