Thermal performance of a window shutter containing PCM: Numerical validation and experimental analysis

Silva, T.; Vicente, Romeu; Amaral, C.; Figueiredo, A.

doi:10.1016/j.apenergy.2016.06.126

Cited by 100 publications

(35 citation statements)

References 47 publications

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“…PCMs were shown to be useful in the thermal regulation of indoor spaces and in improving the energy efficiency of building spaces. This group also performed a numerical calculation using a CFD analysis . The numerical model was based on a 2D analysis.…”

Section: Application Of Solid–liquid Pcms In An Lhtes Systemmentioning

confidence: 99%

Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

Zhang¹,

Yuan²,

Cao³

et al. 2018

Adv Eng Mater

347

108

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This paper provides a review of the solid-liquid phase change materials (PCMs) for latent heat thermal energy storage (LHTES). The commonly used solid-liquid PCMs and their thermal properties are summarized here firstly. Two major drawbacks that seriously limit the application of PCMs in an LHTES system, that is, low thermal conductivity and liquid leakage, are discussed. Various methods for enhancing the thermal conductivity and heat transfer of solid-liquid PCMs are explained. Previous studies regarding formstable composite PCMs and microencapsulated PCMs are also presented. Furthermore, applications of the solid-liquid PCMs used in LHTES and thermal management systems are introduced and analyzed. Finally, future outlooks and research topics are proposed.

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Section: Application Of Solid–liquid Pcms In An Lhtes Systemmentioning

confidence: 99%

Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

Zhang¹,

Yuan²,

Cao³

et al. 2018

Adv Eng Mater

347

108

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“…Future research developments to make the system more adaptive and better performing during summer, and extending its use to winter and intermediate seasons may require the coupling of different panels (colours, thicknesses) filled with PCM with different melting temperatures and typologies; optimization strategies of light and solar transmittance can be obtained by fluidizing the materials in the panel using slurry PCM Limited scientific evidence in literature in relation to the durability of bio PCMs; sealing problem of the material in polycarbonate; the observed discontinuity in appearance of PCMs could limit architectural applications of transparent components containing PCM [18,26,29] Paraffin wax Effect of PCM integrated with the blinds of an aluminium shutter on the thermo-physical performance Reduction in the maximum indoor peak temperature; decreased heat flux Fast and complete melting of the PCM determines indoor discomfort conditions; introduction of an active ventilation system to improve the PCM charging and discharging processes Thermal inertia improvement using PCM in large glazing areas, which currently dominate architectural design Numerical model requires simplifications (a change in volume between solid and liquid phases is not considered)…”

Section: Advanced Technology: Integration Of the Pcm In Tgu Glazingmentioning

confidence: 99%

“…Internal PCM sun protection studies [16,17,29,50] dealt with the problem of the overheating of a screen positioned on the inner side during the summer period: in the case of incoming solar radiation, the blind can only heat up to the melting temperature of the PCM, which then starts to absorb heat and store it as latent heat. A further increase in temperature cannot occur until the PCM has melted completely.…”

Section: Advanced Technology: Integration Of the Pcm In Tgu Glazingmentioning

confidence: 99%

“…• the geographical distribution of the studies, which also provides an indication of the climatic conditions of the study; • the climatic/seasonal distribution of the studies: winter season (37%) [12][13][14][15][16][17][18][19][20][21][22], mid-season (10%) [14,15,20] and summer (50%) [13][14][15][16][17]20,[23][24][25][26][27][28][29][30][31] season periods; • the most investigated PCM typologies, that have been found to be paraffin wax (60%) [14][15][16]18,19,22,23,[25][26][27][28][29][30][31][32][33][34][35] and salt hydrates (20%) [12,13,…”

Section: Literature Review At a Glancementioning

confidence: 99%

“…• in all the papers, the PCM had been macro-encapsulated in containers, that is, glass containers (70%) [12][13][14][15][20][21][22][23][24][25]27,[30][31][32][33][34][35][38][39][40][41], polycarbonate containers (20%) [16,17,19,28,36,42] and aluminium containers (10%) [18,26,29]; • the technologies had predominantly been characterised in outdoor test cells (57%) [14,15,17-22, 24-27,29,31,35] and through laboratory analysis (53%) [12,13,17,20,23,[32][33][34][35][36][37][38][39][40][41][42], while some other studies had been carried out by coupling a modelling activity with an experimental activity (37%) …”

Section: Literature Review At a Glancementioning

confidence: 99%

See 2 more Smart Citations

Phase Change Materials in Transparent Building Envelopes: A Strengths, Weakness, Opportunities and Threats (SWOT) Analysis

et al. 2018

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Abstract:Building envelopes can play a crucial role in building improvement efficiency, and the adoption of Phase Change Materials (PCMs), coupled with transparent elements, may: (i) allow a better control of the heat flows from/to the outdoor environment, (ii) increase the exploitation of solar energy at a building scale and (iii) modulate light transmission in order to prevent glare effects. Starting from a literature review, focused on experimental works, this research identifies the main possible integrations of PCMs in transparent/translucent building envelope components (in glazing, in shutters and in multilayer façade system) in order to draw a global picture of the potential and limitations of these technologies. Transparent envelopes with PCMs have been classified from the simplest "zero" technology, which integrates the PCM in a double glass unit (DGU), to more complex solutions-with a different number of glass cavities (triple glazed unit TGU), different positions of the PCM layer (internal/external shutter), and in combination with other materials (TIM, aerogel, prismatic solar reflector, PCM curtain controlled by an electric pump). The results of the analysis have been summarised in a Strengths, Weakness, Opportunities and Threats (SWOT) analysis table to underline the strengths and weaknesses of transparent building envelope components with PCMs, and to indicate opportunities and threats for future research and building applications.

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Improvement of thermal performance of mortars by using heat storage aggregate made with industrial by‐product to reduce cooling load

Nochaiya

Sangnak

Thongtha

et al. 2021

Intl J of Energy Research

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The usage of waste materials as building materials can be an important method to reduce energy consumption and decrease natural resource usage in the construction industry. In this work, phase change materials (PCMs) were incorporated with industrial by-product materials as an aggregate to produce mortars, which can improve the energy efficiency and improve the environment of buildings. Bottom ash (BA), a by-product from coal-fired power plants, was directly impregnated into paraffin, a PCM, to produce a heat storage aggregate (HSA). The raw materials of the HSA production were characterized by X-ray diffraction, scanning electron microscope, and differential scanning calorimeter. The mortar mixes had a water to cement ratio of 1:2 and a sand to cement ratio of 2.5:1. Six mixtures were prepared with different HSA amounts of 0%, 10%, 20%, 30%, 40%, and 50% by volume. The compressive strength, density, and thermal properties of the mortars were investigated. The results and analyses showed that the compressive strength and density of the mortars decreased with increasing HSA amounts. The thermal conductivity of HSA mortars slightly decreased for increasing levels of HSA. In addition, HSA mortars showed a significant increase in time lags when the HSA content increased, up to approximately 165% to 197% higher than that of the control mortars. HSA levels in mortars can play an important role in improving the heat conductance into buildings.bottom ash, heat storage aggregate, paraffin, phase change materials, thermal properties | INTRODUCTIONRecently, energy demand has increased rapidly due to economic growth, and is responsible for decreasing fossil fuel resources in the world. 1 Around 35% of total

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Thermal performance of a window shutter containing PCM: Numerical validation and experimental analysis

Cited by 100 publications

References 47 publications

Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

Phase Change Materials in Transparent Building Envelopes: A Strengths, Weakness, Opportunities and Threats (SWOT) Analysis

Improvement of thermal performance of mortars by using heat storage aggregate made with industrial by‐product to reduce cooling load

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