A review on phase change material (PCM) for sustainable passive cooling in building envelopes

Akeiber, Hussein J.; Nejat, Payam; Majid, Muhd Zaimi Abd; Wahid, Mazlan Abdul; Jomehzadeh, Fatemeh; Famileh, Iman Zeynali; Calautit, John Kaiser; Hughes, Ben Richard; Zaki, Sheikh Ahmad

doi:10.1016/j.rser.2016.03.036

Cited by 820 publications

(347 citation statements)

References 110 publications

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“…The combination of PCMs with building materials has showed superior performance which can contribute to energy saving, electricity shifting and human comfort [70,[76][77][78][79]. Figure 4a showed a schematic of a kind of full-scale room with PCM concrete wallboards.…”

Section: Salt Hydrates For Wallboardsmentioning

confidence: 99%

Inorganic Salt Hydrate for Thermal Energy Storage

et al. 2017

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Using phase change materials (PCMs) for thermal energy storage has always been a hot topic within the research community due to their excellent performance on energy conservation such as energy efficiency in buildings, solar domestic hot water systems, textile industry, biomedical and food agroindustry. Several literatures have reported phase change materials concerning various aspects. Among these materials, salt hydrates are worthy of exploring due to their high-energy storage density, rational price, multiple sources and relatively good thermal conductivity. This paper reviews the present state of salt hydrates PCMs targeting classification, properties, defects, possible solutions as well as their idiographic features which are suitable for applications. In addition, new trends of future research are also indicated.

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Section: Salt Hydrates For Wallboardsmentioning

confidence: 99%

Inorganic Salt Hydrate for Thermal Energy Storage

et al. 2017

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“…6, the hourly weather data for 21 July in Guangzhou, obtained using Eqs. (7)(8)(9)(10)(11)(12), were used for the following roof thermal performance calculation. The indoor air temperature was set to a constant value of 26 • C. Other boundary conditions, including the surface solar absorptivity, thermal resistance of each layer, and combined heat transfer coefficients at the external and internal surfaces, are listed in Subsection 2.3.…”

Section: Solar Radiationmentioning

confidence: 99%

“…Measures that use the intrinsic physical mechanisms of a building (e.g. radiation [5], convection [6], heat conduction [7], and phase change [8]) to limit, increase, or convert the energy exchanged between the building and its surrounding environment are passive techniques. In recent years, among the effective strategies addressing climate change and environmental pollution, passive techniques have increasingly attracted the attention of researchers [9].…”

Section: Introductionmentioning

confidence: 99%

The impact of evaporation from porous tile on roof thermal performance: A case study of Guangzhou’s climatic conditions

Zhang

et al. 2017

Energy and Buildings

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a b s t r a c tThe evaporative-cooling roof is a popular passive energy conservation technique. This article presents a novel approach for modelling and analysing the influence of evaporation on roof thermal performance. A multivariate nonlinear model was developed for the prediction of the evaporation rate from porous tile. A computer program was then developed based on the one-dimensional roof unsteady heat transfer theory. Finally, the computer program and hourly weather data of Guangzhou, China, were used to analyse the impacts of evaporation (including the evaporation start time and water-application frequency) and slope orientation on roof thermal performance. Evaporation beginning at 11:00 can reduce the external surface temperatures of a horizontal roof and 30 • -inclined east-sloping and west-sloping roofs by up to 11.3, 10.7, and 9.8 • C, respectively, from those of a non-evaporative roof. This, in turn, can reduce the peak-hour (16:00-20:00) internal surface heat flux. Additionally, with the horizontal roof, the reduction in the peak-hour heat flux can be doubled if the evaporative layer is frequently replenished with water.

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“…Phase change material (PCM), as a thermal energy storage medium, can increase the thermal capacity of the building components and thus contribute to reducing heating and cooling loads in buildings [24]. Since PCMs have high energy storage capacity over a narrow temperature, large amount of heat can be stored during the melting processes.…”

Section: Introductionmentioning

confidence: 99%