Numerical analysis of energy savings due to the use of PCM integrated in lightweight building walls

Sheeja, R.; Kumar, Shailendra; Chandrasekar, P.; Jospher, Abraham J. S.; Krishnan, Sai

doi:10.1088/1757-899x/923/1/012070

Cited by 11 publications

(5 citation statements)

References 15 publications

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“…The value of latent heat is zero for a solid and one for a liquid. The liquid fraction (λ) can be written as [32][33][34]:…”

Section: Computational Proceduresmentioning

confidence: 99%

Hybrid Strategies Using Nanoparticles (Al 2 O 3 ) Along with Different Copper Rod Forms (V, U, And I) For Optimizing the Melting of PCM Inside a Semi- Cylindrical Cell: A Numerical Analysis

Basem

2024

Preprint

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The storage of renewable thermal, or electrical energy, extends the period during which this energy can be provided on demand. Energy storage technologies can also be used as a measure of the energy efficiency of structures through the intelligent use of cold or hot storage, this reducing the need for heating and cooling in the structure. In this numerical study, copper rods are used in a spherical cell to increase heat transfer to PCM (paraffin wax), this examined using enthalpy-porosity combination, ANSYS/FLUENT 16 software. Paraffin wax RT58 has been used as the phase change material. In order to monitor the melting process inside the container, three different configurations have been tested: spherical cells with no copper rods, with four copper rods and with eight coppers rods. It was found that adding copper rods to the container, speeds up the melting process and decreases the amount of time needed to completely melt the PCM. The time needed to complete the melting process is reduced by 34% and 56% when using four copper rods and eight copper rods, respectively. The higher the number of rods used, the faster the melting rate, this finding of advantage to energy and thermal storage applications.

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“…The value of latent heat is zero for a solid and one for a liquid. The liquid fraction (λ) can be written as [32][33][34]:…”

Section: Computational Proceduresmentioning

confidence: 99%

Hybrid Strategies Using Nanoparticles (Al 2 O 3 ) Along with Different Copper Rod Forms (V, U, And I) For Optimizing the Melting of PCM Inside a Semi- Cylindrical Cell: A Numerical Analysis

Basem

2024

Preprint

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“…A numerical simulation with and without the incorporation of PCM in building walls was conducted by Kumar et al (2020) [76]. To assess the effects of various configurations of exterior building walls, PCM building walls were integrated.…”

Section: Pcm Studies Utilised In Buildings For Enhanced Thermal and E...mentioning

confidence: 99%

A Review of Recent Improvements, Developments, and Effects of Using Phase-Change Materials in Buildings to Store Thermal Energy

Rashid

Al‐Obaidi

Dulaimi

et al. 2023

Designs

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When it comes to guaranteeing appropriate performance for buildings in terms of energy efficiency, the building envelope is a crucial component that must be presented. When a substance goes through a phase transition and either gives out or absorbs an amount of energy to provide useful heat or cooling, it is called a phase-change material, or PCM for short. Transitions often take place between the matter’s solid and liquid states. Buildings use PCMs for a variety of purposes, including thermal comfort, energy conservation, managing the temperature of building materials, reducing cooling/heating loads, efficiency, and thermal load shifting. Improved solutions are applied using new method and approach investigations. Undoubtedly, researching and applying PCM use in building applications can help create buildings that are more energy-efficient and environmentally friendly, while also increasing thermal comfort and consuming less energy. It provides a possible answer to the problems posed by climate change, rising energy demand in the built environment, and energy use optimisation. However, it is true that no particular research has yet been conducted to thoroughly analyse the linked PCM applications in the building industry. Thus, the principal tactics are addressed in this paper to determine current and efficient methods for employing PCMs in buildings to store thermal energy. By gathering around 50 instances from the open literature, this study conducts a thorough assessment of the up-to-date studies between 2016 and 2023 that used PCMs as thermal energy storage in building applications. As a result, this review aims to critically evaluate the PCM integration in buildings for thermal energy storage, identify a number of issues that require more research, and draw some important conclusions from the body of literature. Specifically, the building envelope roof and external wall uses of PCMs are highlighted in this research. Applications, general and desired characteristics, and PCM types and their thermal behaviour are described. In comparison to a traditional heat storage tank that simply contains water, this review indicates that a water storage tank containing 15% PCM improves heat storage by 70%. Also, less than 7 °C of internal air temperature was reduced by the PCMs in the walls, which avoided summer warming. Finally, using PCM for space cooling resulted in substantial energy savings across the various seasons.

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“…Other researchers have also used the EnergyPlus PCM method to analyse experimental data [10][11]. Additionally, the building result was validated compare to the experimental results using EnergyPlus software [12][13].…”

Section: Validationmentioning

confidence: 99%

Thermal performance analysis of PCM building for Moderate climatic region in Bangalore City, India

Kumar¹,

Sheeja²,

Ajin³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

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A major percentage of the energy is utilised for the building sectors for cooling the building which is used for Airconditioning systems. One of the techniques for decreasing energy consumption in building systems is passive cooling. The PCM materials was integrated in the building which is isothermal temperature for storing and retrieving the energy during a phase change. The stored PCM is a constant temperature for phase change and also gives the large potential of energy during the storing and releasing energy. The integrated building wall to prevent the solar heat infiltration into buildings and controlling the indoor temperature swing. The selection and efficiency of PCMs are highly subjective to climatic conditions where they applied. In the present study, a real time PCM integrated residential building is studied through numerical simulation using Design Builder software in moderate climatic condition in Bangalore city, India. The result shows that throughout the year, the PCM room does not required any air-conditioning device for cooling application.

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Numerical analysis of energy savings due to the use of PCM integrated in lightweight building walls

Cited by 11 publications

References 15 publications

Hybrid Strategies Using Nanoparticles (Al 2 O 3 ) Along with Different Copper Rod Forms (V, U, And I) For Optimizing the Melting of PCM Inside a Semi- Cylindrical Cell: A Numerical Analysis

Hybrid Strategies Using Nanoparticles (Al 2 O 3 ) Along with Different Copper Rod Forms (V, U, And I) For Optimizing the Melting of PCM Inside a Semi- Cylindrical Cell: A Numerical Analysis

A Review of Recent Improvements, Developments, and Effects of Using Phase-Change Materials in Buildings to Store Thermal Energy

Thermal performance analysis of PCM building for Moderate climatic region in Bangalore City, India

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