Phase Change Materials in Energy: Current State of Research and Potential Applications

Bukhalkin, D. D.; Semenov, Anton P.; Новиков, А. А.; Mendgaziev, Rais I.; Stoporev, Andrey S.; Гущин, П. А.; Shchukin, Dmitry

doi:10.1007/s10553-020-01089-8

Cited by 11 publications

(3 citation statements)

References 67 publications

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“…Layering strategies have been explored, with varying combinations of PCM and other materials. Despite these advancements, further research is needed to optimize the distribution of PCMs in walls for maximum thermal performance [12]. Although optimizing the heat transfer efficiency of PCM modules has received substantial interest in the energy-saving sector [10,13], and the research has investigated methods of enhancing the performance of PCM such as appropriate implementation [14], material hosting [15], PCM material like composite PCM [16,5], and machine learning [17], research still lacks investigating the distribution of PCM and its effect on the performance.…”

Section: Introductionmentioning

confidence: 99%

Refining the Integration of Encapsulated Phase Change Materials in Building Envelopes

Aridi,

Yehya

2024

Preprint

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The demand for cooling of buildings is continuously growing due to global warming contributing to more global CO2 emissions. Escalating resource costs and climate change risks intensify the need for efficient cooling solutions. Phase change materials have been used in building envelopes to reduce the energy consumption. However, these materials are often costly, which creates a barrier for their implementation. Reducing the PCM quantities without compromising their behavior provides a substantial reduction to their overall payback period and increases their feasibility. This study aims to optimize the incorporation of encapsulated PCM in building envelopes by studying the effect of their distribution pattern within the walls. The simulations are done using 2D finite element method. The results indicate that PCM distribution has an important effect on the efficiency of the design and an optimal distribution can allow the reduction of PCM quantities in a wall. In the studied case, the lowest cooling load was found at 14% volumetric percentage of PCM rather than 30% if optimal distribution is used. This consequently have important implications on the need for geometrical optimization when it comes to encapsulated PCM systems.

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Section: Introductionmentioning

confidence: 99%

Refining the Integration of Encapsulated Phase Change Materials in Building Envelopes

Aridi,

Yehya

2024

Preprint

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“…From an applied standpoint, the formation of carbon dioxide hydrates is promising for seawater desalination [4][5][6], wastewater treatment [7], the prevention of CO 2 emissions to the atmosphere through its sequestration and capture [8][9][10][11], the separation of gas mixtures [12][13][14][15], and in food industry technologies [16]. Carbon dioxide hydrate is a promising phase change material for cold energy storage [17,18]. A deeper understanding of the phase behavior in the CO 2 -H 2 O system is crucial for explaining processes in the lithosphere of Mars and other astronomical objects [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Direct Measurement of the Four-Phase Equilibrium Coexistence Vapor–Aqueous Solution–Ice–Gas Hydrate in Water–Carbon Dioxide System

Semenov

Mendgaziev

Stoporev

et al. 2023

IJMS

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Precise data on the non-variant equilibrium of the four phases (vapor–aqueous solution–ice–gas hydrate) in P–T coordinates are highly desired for developing accurate thermodynamic models and can be used as reference points (similar to the triple point of water). Using the two-component hydrate-forming system CO2–H2O, we have proposed and validated a new express procedure for determining the temperature and pressure of the lower quadruple point Q1. The essence of the method is the direct measurement of these parameters after the successive formation of the gas hydrate and ice phases in the initial two-phase gas–water solution system under intense agitation of the fluids. After relaxation, the system occurs in the same equilibrium state (T = 271.60 K, P = 1.044 MPa), regardless of the initial parameters and the order of crystallization of the CO2 hydrate and ice phases. Considering the combined standard uncertainties (±0.023 K, ±0.021 MPa), the determined P and T values agree with the results of other authors obtained by a more sophisticated indirect method. Validating the developed approach for systems with other hydrate-forming gases is of great interest.

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“…It is known that crystal hydrates, eutonic and eutectic mixtures of inorganic compounds have a high potential as phase-transition heat storage materials. Some thermophysical properties (temperature and heat of fusion, thermal conductivity, and density) of such heat storage materials are described [7][8][9][10]. On the market there are heat storage materials based on crystal hydrates of inorganic salts whose melting points range from 7 to 117°С [7].…”

Section: Introductionmentioning

confidence: 99%

Phase Equilibria in the KNO3–Ca(NO3)2–H2O System at 25°C

Кистанова

Mukminova

Koneva

et al. 2021

Russ. J. Inorg. Chem.

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Phase equilibria at 25°C in the KNO 3 -Ca(NO 3 ) 2 -H 2 O system were studied by the isothermal sections method. The phase diagram of the system was found to feature six phase fields, three monovariant lines, and two invariant points, the latter corresponding to a eutonic solution saturated with KNO 3 and KNO 3 ⋅Ca(NO 3 ) 2 ⋅3H 2 O and to a peritonic solution in equilibrium with Ca(NO 3 ) 2 ⋅4H 2 O and KNO 3 ⋅Ca(NO 3 ) 2 ⋅3H 2 O. The structure of the double salt was determined by X-ray structural analysis; its melting temperature and heat of melting were determined by differential scanning calorimetry (DSC) as ∆Н m = 132.2 kJ/kg, and T m = 52.1°С. The density of salt melts was measured at 60, 80, and 85°C. The thermophysical parameters of the double salt allow us to regard it as a promising heat storage material.

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Phase Change Materials in Energy: Current State of Research and Potential Applications

Cited by 11 publications

References 67 publications

Refining the Integration of Encapsulated Phase Change Materials in Building Envelopes

Refining the Integration of Encapsulated Phase Change Materials in Building Envelopes

Direct Measurement of the Four-Phase Equilibrium Coexistence Vapor–Aqueous Solution–Ice–Gas Hydrate in Water–Carbon Dioxide System

Phase Equilibria in the KNO3–Ca(NO3)2–H2O System at 25°C

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