PCM-mortar based construction materials for energy efficient buildings: A review on research trends

Rao, V. Venkateswara; Parameshwaran, R.; Ram, V. Vinayaka

doi:10.1016/j.enbuild.2017.09.098

Cited by 169 publications

(69 citation statements)

References 81 publications

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“…When turning to the encapsulation techniques, one can consider [4,6] for the micro-encapsulations and [8] for the nano-encapsulations.If one now turns to more specific reviews, the cooling applications are addressed in [11][12][13][14][15] while specific papers are available for the appliances (or active systems), such as PV [16] and solar domestic hot water systems [17,18] or heat-pumps [19,20]. The use of PCM in structures, and the associated boons and banes, can be found in [21][22][23][24][25][26][27][28], the specific topic of mortars being detailed in [29,30]. Ling and Poon [29], after some classic recalls about PCM and their incorporation processes, propose a brief survey on the various mechanical and thermal properties determination.…”

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confidence: 99%

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Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

et al. 2019

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The determination of both the thermal and thermodynamical properties of a composite material containing phase change material is done thanks to an inverse method, which combines experimental measurements and numerical computations. Given first an in-house experiment, which allows us to test samples at a macroscopic scale (i.e., close to the real conditions) and to set various types of thermal stresses, and secondly the simulation of the corresponding thermal behavior, relying on an accurate thermodynamical modeling and taking into account the real operating parameters (e.g., thermal contact resistances and non-symmetric heat fluxes on each side), it is possible to characterize the solid and liquid thermal conductivities and heat capacities, as well as the temperature range associated with a non-isothermal phase transition and the associated latent heat. The specificity of the present approach is to allow, in a single step, a characterization of all the involved thermo-physical parameters that are usually required in simulation tools (e.g., EnergyPlus…). Moreover, the hitherto studies dealing with repeatability and uncertainties of the enthalpy characterization are generally very scant and not encountered very often or only with qualitative assessments. This is a clear caveat, especially when considering any system design. Therefore, for the first time ever, the present paper pays a special attention to the repeatability of the identification method and studies the scedasticity of the results, that is to say the deviations of the determined enthalpy curves, not only from a qualitative point of view but also by proposing quantitative arguments. Finally, the results are very promising since the agreement between all trials is excellent, the maximum error for all parameters being lower than 4%. This is far below the current quality thresholds admitted when characterizing the enthalpy of a phase change material.

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confidence: 99%

“…However, only a few numerical and practical data are available, before some discussion on their stability. In [30], Rao et al first show that, for mortars, PCMs are mainly studied in combination with cement ( Figure 11, p. 104). Secondly, their global impacts are well described, with an useful summary for the micro-encapsulated PCMs in Table 4, p. 105.…”

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Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

et al. 2019

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“…The schematic layout of the system is reported in Figure 1. It consists of one vacuum testing chamber (5), in which three plate heat exchangers (HEX) are located to perform the cycle (3) and shelf test at desorption (2) and adsorption (4) conditions. A second vacuum chamber, operating as evaporator/condenser, keeps the water vapor pressure inside the system constant, (7) and a vacuum valve connects the two chambers (6).…”

Section: Experimental Aging Setupmentioning

confidence: 99%

Verification of hydrothermal stability of adsorbent materials for thermal energy storage

Frazzica

Brancato

2018

Int J Energy Res

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Summary This paper presents an experimental protocol for the cycling stability of adsorbent materials for thermal energy storage (TES) applications under hydrothermal conditions. Two different aging conditions were identified, namely, cycle and shelf test. The former one mimicking the cycling between desorption and adsorption conditions, while the latter one keeping a constant temperature for long time under constant water vapor pressure. A flexible experimental setup was then designed and realized to contemporarily perform both aging condition under selectable operating conditions. The protocol defines different characterization methods to compare the fresh and the aged samples. The measurement of the water vapor adsorption equilibrium isobars represents the main parameter to directly highlight possible degradation phenomena. Subsequently, X‐ray diffraction patterns (XRD), nitrogen physisorption, and scanning electron microscopy coupled to energy dispersive x‐ray (SEM–EDX), are used to evaluate structural, textural, morphological, and elemental composition variation that can help in identifying the causes of possible degradation. The proposed protocol was employed to validate the stability of a commercial adsorbent, AQSOA Z02, that proved a quite stable behavior both under cycle and shelf investigated conditions.

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“…In recent years, a large number of research reports have paid attentions to incorporate a suitable PCM into the walls, ceiling, and floor to improve the energy efficiency of buildings . Most of the literature reported the application of PCM microcapsules in cement‐based materials . Narain et al designed a novel concrete tile which combined mechanical and thermal properties through the addition of PCM microcapsules.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9] Most of the literature reported the application of PCM microcapsules in cement-based materials. [10][11][12][13] Narain et al 14 designed a novel concrete tile which combined mechanical and thermal properties through the addition of PCM microcapsules. Meanwhile, recycled glass was used to replace part of the aggregates to enhance environmental attributes and beautify the appearance.…”

Section: Introductionmentioning

confidence: 99%

Characterization of novel shape‐stabilized phase change material mortar: Portland cement containing Na ₂ SO ₄ ·10H ₂ O and fly ash for energy‐efficient building

Liu

Qiu

et al. 2019

Int J Energy Res

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Summary In this work, a novel Na2SO4·10H2O/fly ash shape‐stabilized phase change material mortar (PCM mortar) was prepared for building energy efficiency, in the context of energy conservation and environmental protection. The working, mechanical, and thermal properties of this proposed PCM mortar were investigated. The experiment results showed that the incorporation of PCMs greatly increased the thermal inertia of the mortar, while corresponding compressive strength was little affected. Specifically, when the blending amount of PCMs reached 15%, the thermal storage capacity of mortar sample (PCM‐15) was 6.18 × 104 kJ/m3, which is 2.4 times of that for mortar sample without PCM (OPC) evaluated by theoretical calculations, while the corresponding compressive strength of mortar sample (PCM‐15) still remained above 31 MPa. Furthermore, the effects of PCM mortar on thermal comfort and energy use of buildings were studied by using experiment and simulation methods, respectively. The control experiments showed that PCM mortar can effectively alleviate the influence of outdoor temperature on indoor temperature compared with OPC. Temperature difference between PCM‐15 and OPC board can reach 4.6°C (inner surface) and 8.6°C (outer surface), respectively. Meanwhile, temperature difference of internal space reached 1.2°C. The simulation results showed that the energy consumption per unit building area was reduced by 4.4 and 18.7 kg/m2 in Guangzhou and Harbin, respectively, with PCM mortar as the envelope structure. Hence, the proposed PCM mortar showed significant thermal and mechanical properties and had broad application prospects in regulating indoor temperature and constructing energy‐efficient buildings.

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PCM-mortar based construction materials for energy efficient buildings: A review on research trends

Cited by 169 publications

References 81 publications

Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

Verification of hydrothermal stability of adsorbent materials for thermal energy storage

Characterization of novel shape‐stabilized phase change material mortar: Portland cement containing Na ₂ SO ₄ ·10H ₂ O and fly ash for energy‐efficient building

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PCM-mortar based construction materials for energy efficient buildings: A review on research trends

Cited by 169 publications

References 81 publications

Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

Verification of hydrothermal stability of adsorbent materials for thermal energy storage

Characterization of novel shape‐stabilized phase change material mortar: Portland cement containing Na 2 SO 4 ·10H 2 O and fly ash for energy‐efficient building

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Product

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Characterization of novel shape‐stabilized phase change material mortar: Portland cement containing Na ₂ SO ₄ ·10H ₂ O and fly ash for energy‐efficient building