A calcium chloride hexahydrate/expanded perlite composite with good heat storage and insulation properties for building energy conservation

Fu, Lulu; Wang, Qianhao; Ye, Rongda; Fang, Xiaoming; Zhang, Zhengguo

doi:10.1016/j.renene.2017.07.091

Cited by 100 publications

(46 citation statements)

References 41 publications

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“…Under this circumstance, the indoor temperature can be kept at a comfortable range (22°C‐28°C) for a whole day. In our previous work, a model room (350 × 350 × 350 mm 3 ) using a PCM brick as the roof was built. A 1000 W/m 2 iodine tungsten lamp illuminated for 100 minutes.…”

Section: Resultsmentioning

confidence: 99%

“…Referring to our previous research, the problems of phase segregation and overcooling for pure CaCl 2 ·6H 2 O have been solved by preparing shape‐stable CaCl 2 ·6H 2 O/EP composite and adding SrCl 2 ·6H 2 O (nucleating agent). The maximum adsorption capacity for CaCl 2 ·6H 2 O was proved to be 55 wt%, and 1000 melting/freezing cycles test confirmed this composite PCM possesses excellent thermal reliability.…”

Section: Methodsmentioning

confidence: 99%

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Optimal roof structure with multilayer cooling function materials for building energy saving

et al. 2019

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Summary Both cool roof and phase change thermal storage are promising technologies in decreasing building energy consumption. Combining these two technologies is likely to further enhance the thermal comfort of the building as well as reduce air condition loads. In this paper, the cooling performance and energy‐saving effects of four types of roof (normal roof, phase change material [PCM] roof, cool roof, and cool PCM roof [cool roof coupled with PCM]) were investigated under a simulated sunlight. Experimental results indicate that compared with normal roof, the other three roofs are able to narrow the indoor temperature fluctuation and decrease the heat flow entering into the room. Among them, cool PCM roof gave the best energy‐saving effect that can lower the indoor temperature and heat entering into rooms by 6.6°C and 52.9%, respectively. Besides, the PCM location, PCM thickness, and insulation thickness exerted great impacts on the cooling performance of the roof. Placing the PCM on the internal layer beneath the extruded polystyrene (XPS) insulation board can make the indoor temperature 1.2°C lower than that on the middle layer. Although thicker PCM panels or insulation boards can provide a better thermal insulation, 5 mm in PCM thickness and 20 mm in insulation thickness are enough to guarantee the indoor temperature of cool PCM roof system at a comfortable range (22°C‐28°C) for a whole day. These findings will give guidance in designing buildings with a light and compact roof structure to decrease energy consumption and improve comfort level.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Optimal roof structure with multilayer cooling function materials for building energy saving

et al. 2019

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“…This success model showed that radiative effects of salt hydrate wallboards could evidently enhance thermal comfort of residents. Recently, Fu et al [83] developed a novel nonflammable CaCl 2 ·6H 2 O/expanded perlite composite and then fabricated into a board for replacing the foam board to be employed as the core in a foam insulating brick to obtain a PCM board. It is found that when applied PCM brick as the roof of a test room, the indoor peak temperature decreased more apparently compared with foam brick.…”

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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“…However, it has been used rarely as a supporting material because of relatively higher cost and lower compatibility with traditional construction elements compared to clay‐type carriers. With this respect, many types of clay minerals such as kaolin , diatomite , sepiolite , bentonite , perlite , and vermiculite were used for shape stabilization of various organic PCMs.…”

Section: Introductionmentioning

confidence: 99%

Form‐Stabilized Polyethylene Glycol/Palygorskite Composite Phase Change Material: Thermal Energy Storage Properties, Cycling Stability, and Thermal Durability

Sarı

Ouikhalfan

Chehouani

et al. 2020

Polymer Engineering & Sci

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In this work, polyethylene glycol (PEG) as a phase change material (PCM) was incorporated with palygorskite (Pal) clay to develop a novel form‐stable composite PCM (F‐SCPCM). The Pal/PEG(40 wt%) composite was defined as F‐SCPCM and characterized using SEM/EDS, FT‐IR, XRD, DSC, and TGA techniques. The DSC results revealed that the F‐SCPCM has a melting temperature of 32.5°C and latent heat capacity of 64.3 J/g for thermal energy storage (TES) applications. Thermal cycling test showed that the F‐SCPCM had good cycling thermal/chemical stability after 500 cycles. The TGA data proved that that both cycled and non‐cycled F‐SCPCMs had considerable high thermal durability. Consequently, the created F‐SCPCM could be considered as an additive material for production of green construction components with TES capability. POLYM. ENG. SCI., 60:909–916, 2020. © 2020 Society of Plastics Engineers

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A calcium chloride hexahydrate/expanded perlite composite with good heat storage and insulation properties for building energy conservation

Cited by 100 publications

References 41 publications

Optimal roof structure with multilayer cooling function materials for building energy saving

Optimal roof structure with multilayer cooling function materials for building energy saving

Inorganic Salt Hydrate for Thermal Energy Storage

Form‐Stabilized Polyethylene Glycol/Palygorskite Composite Phase Change Material: Thermal Energy Storage Properties, Cycling Stability, and Thermal Durability

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