Experimental thermal study of a new PCM-concrete thermal storage block (PCM-CTSB)

Shen, Yongliang; Liu, Shuli; Zeng, Cheng; Zhang, Yanjun; Li, Yongcai; Han, Xiangxin; Yang, Liu; Yang, Xiu'e

doi:10.1016/j.conbuildmat.2021.123540

Cited by 63 publications

(19 citation statements)

References 26 publications

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“…The heat energy of the ESPBG in the endothermic and exothermic stages was 28.19 J/g and 28.64 J/g, respectively, reflecting the paraffin heat energy retained in the ESPBG (26.06%). The energy-storage effect effectively reached the thermal performance of the energy-storage aggregate and the gypsum board in the literature [ 15 , 17 , 38 ], and can be used for building energy-saving materials, subsequent PPBG structure, energy storage aggregates, and gypsum board.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Pore Structure of Energy-Storage Phosphorus Building Gypsum

Liao

Zhao

et al. 2022

Materials

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In this study, the pore structure of a hardened phosphorous building gypsum body was optimised by blending an air-entraining agent with the appropriate water–paste ratio. The response surface test was designed according to the test results of the hardened phosphorous building gypsum body treated with an air-entraining agent and an appropriate water–paste ratio. Moreover, the optimal process parameters were selected to prepare a porous phosphorous building gypsum skeleton, which was used as a paraffin carrier to prepare energy-storage phosphorous building gypsum. The results indicate that if the ratio of the air-entraining agent to the water–paste ratio is reasonable, the hardened body of phosphorous building gypsum can form a better pore structure. With the influx of paraffin, its accumulated pore volume and specific surface area decrease, and the pore size distribution is uniform. The paraffin completely occupies the pores, causing the compressive strength of energy-storage phosphorous building gypsum to be better than that of similar gypsum energy-storing materials. The heat energy further captured by energy-storage phosphorous building gypsum in the endothermic and exothermic stages is 28.19 J/g and 28.64 J/g, respectively, which can be used to prepare energy-saving building materials.

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Section: Resultsmentioning

confidence: 99%

Preparation and Pore Structure of Energy-Storage Phosphorus Building Gypsum

Liao

Zhao

et al. 2022

Materials

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“…PCMs can be incorporated into the entire building envelope: walls, roofs, windows, and floors [139][140][141][142][143]. Four experimental techniques for incorporating PCMs into building envelopes are presented in the literature: direct incorporation, impregnation, encapsulation, and shape-stabilized.…”

Section: Pcms In Ham Modelsmentioning

confidence: 99%

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

Sawadogo,

Godin,

Duquesne

et al. 2023

Buildings

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Buildings are submitted to various external and internal solicitations that could affect its energy performance. Among these solicitations, temperature and moisture play a crucial role and could irrevocably affect the comfort of the occupants and the indoor air quality of the living environment. To assess the impact of the solicitation on building performance, a precise modeling of the heat, air, and moisture transfer phenomenon is necessary. This work proposes an extensive review of the hygrothermal models for building envelopes. The different models are divided into nodal and HAM techniques for heat, air, and moisture (HAM) transfer models. The HAM approach has been classified based on four driving potentials: moisture content, relative humidity, capillary pressure, and vapor pressure. Phase change materials (PCMs), alongside hygroscopic materials, enhance building thermal capacity and energy efficiency. There are various approaches to studying phase changes, with enthalpy-based and heat capacity approaches being the most popular. Building performance can be improved by combining PCM thermal inertia with hygroscopic moisture management. This review has exhibited the need for numerical models that address phase change and moisture behavior in these hybrid materials, capable of controlling temperature and humidity.

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“…Finally, another possibility is to incorporate the PCMs into concrete blocks or other building materials, which results in a structure with high thermal inertia. This technique allows the incorporation of PCMs throughout the building envelope (walls, roofs, floors) to store energy [32][33][34][35][36].…”

Section: Building Envelopes Integrating Pcmsmentioning

confidence: 99%

Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

et al. 2021

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Latent heat thermal energy storage systems incorporate phase change materials (PCMs) as storage materials. The high energy density of PCMs, their ability to store at nearly constant temperature, and the diversity of available materials make latent heat storage systems particularly competitive technologies for reducing energy consumption in buildings. This work reviews recent experimental and numerical studies on the integration of PCMs in building envelopes for passive energy storage. The results of the different studies show that the use of PCMs can reduce the peak temperature and smooth the thermal load. The integration of PCMs can be done on the entire building envelope (walls, roofs, windows). Despite many advances, some aspects remain to be studied, notably the long-term stability of buildings incorporating PCMs, the issues of moisture and mass transfer, and the consideration of the actual use of the building. Based on this review, we have identified possible contributions to improve the efficiency of passive systems incorporating PCMs. Thus, fatty acids and their eutectic mixtures, combined with natural insulators, such as vegetable fibers, were chosen to make shape-stabilized PCMs composites. These composites can be integrated in buildings as a passive thermal energy storage material.

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Experimental thermal study of a new PCM-concrete thermal storage block (PCM-CTSB)

Cited by 63 publications

References 26 publications

Preparation and Pore Structure of Energy-Storage Phosphorus Building Gypsum

Preparation and Pore Structure of Energy-Storage Phosphorus Building Gypsum

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

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