Recent advancements in latent heat phase change materials and their applications for thermal energy storage and buildings: A state of the art review

Hassan, Faisal; Jamil, Furqan; Hussain, Abid; Ali, Hafız Muhammad; Janjua, Muhammad Mansoor; Khushnood, Shahab; Farhan, Muhammad; Altaf, Khurram; Said, Zafar; Li, Changhe

doi:10.1016/j.seta.2021.101646

Cited by 78 publications

(33 citation statements)

References 410 publications

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“…Incor-porating phase change energy storage materials into building systems can not only reduce energy consumption but also improve the living comfort of buildings. [123][124][125] Various phase change panels, bricks, slabs, and slats have been developed to work as basic blocks for indispensable building envelopes, such as walls, roofs, and floors (Figure 8d). [126][127][128][129] For instance, three types of PCMs with different phase change temperatures were employed to produce hybrid wallboards to adapt to temperature changes in different seasons (Figure 8e), thus reducing energy consumption and improving thermal comfort in buildings.…”

Section: Thermal Management and Regulationmentioning

confidence: 99%

Exploring Next‐Generation Functional Organic Phase Change Composites

Zhou

Yang

Feng

et al. 2022

Adv Funct Materials

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As one of the main forms and intermediate carriers of energy, it is impressive to expand the application scope of heat energy, thereby boosting innovations in heat harvesting, conversion, storage, regulation, and utilization associated with the relevant techniques. Phase change materials (PCMs), as a state-of-the-art latent heat storage technique, have garnered increasing interest in heat-related applications over the past decades, and abundant high-performance PCMs with excellent shape stability and salient thermal conductivity have been developed. This review focuses on the issues concerning organic PCMs from the perspectives of flexible, multifunctional, and smart phase change composites, along with emerging applications and processing technologies, which are expected to offer possible guidance for the exploration of next-generation advanced functional phase change composites.

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Section: Thermal Management and Regulationmentioning

confidence: 99%

Exploring Next‐Generation Functional Organic Phase Change Composites

Zhou

Yang

Feng

et al. 2022

Adv Funct Materials

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“…Composite materials [71][72][73], MPCM [74][75][76], SSPCMs [77,78] and nanoPCMs [79][80][81][82] thus represent the future of PCM as grout in GSHPs, increasing the thermal conductivity of conventional PCMs: in fact, only if thermal conductivity is sufficiently high, about that of conventional grout [77], is the efficiency and operational stability of the GSHP improved. On the other hand, only a significant improvement justifies the current high cost of this technology, which otherwise nullifies the reduction of the overall cost obtained, reducing the required BHE length.…”

Section: Conventional Solutionsmentioning

confidence: 99%

State of the Art, Perspective and Obstacles of Ground-Source Heat Pump Technology in the European Building Sector: A Review

et al. 2022

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In the European Union, 40% of the overall final energy consumption is attributable to the buildings sector. A reason for such data may be found considering that the great majority of the building stock is more than 40 years old. According to the European Commission, an interesting potential lies in the refurbishment of the building sector, and heat pump technology has been recognized as one of the most cost-effective solutions to tackle the environmental issue of this sector. Regarding heat pump technology, ground-source heat pumps (GSHPs) have been proven to be the most efficient solution on equal boundary conditions. Despite this, in most EU states’ markets, GSHPs hold only a small market share with respect to air-source heat pumps. In this paper, the state of art and possible future developments of GSHP technology have been reviewed together with a focus on the potential of such technology, most of all on the refurbishment of existing buildings, and on the obstacles to its spread. The state of art of borehole heat exchangers has been studied, focusing on the parameters characterizing the outside pipe and the pipe itself, i.e., pipe and grout materials. Moreover, an overview on the last developments involving refrigerants and secondary fluids is given. Finally, the design and control strategies of GSHPs have been reviewed.

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“…With its limitless amount, solar energy is considered one of the most promising renewable energy sources for the future [1,2]. The fact that solar energy reaching earth is four times higher than today's global energy consumption has motivated researchers to explore the domain of photovoltaics and solar cells [3][4][5][6]. Solar cells exhibit the potential of transforming solar energy into electrical energy.…”

Section: Introductionmentioning

confidence: 99%

Insights from Density Functional Theory on the Feasibility of Modified Reactive Dyes as Dye Sensitizers in Dye-Sensitized Solar Cell Applications

Dindorkar¹,

Yadav

2022

Solar

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Recently, reactive dyes have attracted a lot of attention for dye-sensitized solar cell applications. This study endeavors to design dye sensitizers with enhanced efficiency for photovoltaic cells by modifying the reactive blue 5 (RB 5) and reactive brown 10 (RB 10) dyes. Three different strategies were used to design the sensitizers, and their efficiency was compared using the density functional theory (DFT). The optimized geometry, bang gap values, the density of states, electrostatic potential surface analysis, and theoretical FT-IR absorption spectra of the sensitizers were obtained. In the first strategy, functional groups (electron-donating (C2H5), electron-withdrawing (–NO2) groups) were anchored onto dye molecules, and their effect on the charge transport properties was evaluated using the DFT analysis. The latter two designs were based on a donor-π-acceptor strategy. The second design consisted of intramolecular donor-acceptor regions separated by a benzodithiophene-based π-spacer. In the third strategy, an external acceptor unit was attached to the dye molecules through the benzodithiophene-based π-spacer. The electron-donating strengths of donor moieties in the donor-π-acceptor systems were studied using B3LYP/6-31G level DFT calculations. The quantum chemical analysis of the three designs revealed that the anchoring of functional groups (–NO2 and C2H5) on the dye molecules showed no impact on the charge transport properties. The introduction of a benzodithiophene-based π-spacer improved the conjugation of the dye sensitizers, which enhanced the electron transport properties. The electron transport properties further improved when an external acceptor unit was attached to the dye molecule containing a π-spacer. It was thus concluded that attaching an external acceptor unit to the donor dye molecule containing a π-spacer produced desired results for both of the dyes.

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Recent advancements in latent heat phase change materials and their applications for thermal energy storage and buildings: A state of the art review

Cited by 78 publications

References 410 publications

Exploring Next‐Generation Functional Organic Phase Change Composites

Exploring Next‐Generation Functional Organic Phase Change Composites

State of the Art, Perspective and Obstacles of Ground-Source Heat Pump Technology in the European Building Sector: A Review

Insights from Density Functional Theory on the Feasibility of Modified Reactive Dyes as Dye Sensitizers in Dye-Sensitized Solar Cell Applications

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