Silica fume/capric acid-stearic acid PCM included-cementitious composite for thermal controlling of buildings: Thermal energy storage and mechanical properties

Hekimoğlu, Gökhan; Nas, Memduh; Ouikhalfan, Mohammed; Sarı, Ahmet; Tyagi, V.V.; Sharma, R. K.; Kurbetçi, Şirin; Saleh, Tawfik A.

doi:10.1016/j.energy.2020.119588

Cited by 93 publications

(17 citation statements)

References 57 publications

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“…Portland cement is the most studied binder, but alkali-activated cements and geopolymers also seem to be considered as viable alternatives. No problems due to chemical or physical interactions between PCM and mortar/concrete emerged; nevertheless, the percentage of PCM must be limited (up to 20 wt% in the mortars), mainly to control the decrease in mechanical properties, such as compressive strength and flexural strength [ 82 , 84 , 85 , 86 , 87 ]. Instead, the decrease in the workability of fresh mortar/concrete is usually solved by adding more water in the initial mixing of the materials or by using a superplasticizer [ 81 , 84 , 88 , 89 ].…”

Section: Pcms’ Evolution In the Building Sectormentioning

confidence: 99%

Phase Change Material Evolution in Thermal Energy Storage Systems for the Building Sector, with a Focus on Ground-Coupled Heat Pumps

et al. 2022

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The building sector is responsible for a third of the global energy consumption and a quarter of greenhouse gas emissions. Phase change materials (PCMs) have shown high potential for latent thermal energy storage (LTES) through their integration in building materials, with the aim of enhancing the efficient use of energy. Although research on PCMs began decades ago, this technology is still far from being widespread. This work analyses the main contributions to the employment of PCMs in the building sector, to better understand the motivations behind the restricted employment of PCM-based LTES technologies. The main research and review studies are critically discussed, focusing on: strategies used to regulate indoor thermal conditions, the variation of mechanical properties in PCMs-based mortars and cements, and applications with ground-coupled heat pumps. The employment of materials obtained from wastes and natural sources was also taken in account as a possible key to developing composite materials with good performance and sustainability at the same time. As a result, the integration of PCMs in LTES is still in its early stages, but reveals high potential for employment in the building sector, thanks to the continuous design improvement and optimization driven by high-performance materials and a new way of coupling with tailored envelopes.

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Section: Pcms’ Evolution In the Building Sectormentioning

confidence: 99%

Phase Change Material Evolution in Thermal Energy Storage Systems for the Building Sector, with a Focus on Ground-Coupled Heat Pumps

et al. 2022

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“…Although they have a tiny phase change temperature range, they are expensive and not commercially available 9 . Recently, many scholars investigated PCMs in different applications, for example, domestic refrigerators, 10 building passive heating and cooling, 11 air conditioning systems, 12 and SAHs 13 …”

Section: Introductionmentioning

confidence: 99%

“…Although they have a tiny phase change temperature range, they are expensive and not commercially available. 9 Recently, many scholars investigated PCMs in different applications, for example, domestic refrigerators, 10 building passive heating and cooling, 11 air conditioning systems, 12 and SAHs. 13 Khadraoui et al 14 performed an experimental investigation to determine the feasibility of storing solar energy during the day and utilizing it at night using a solar dryer with latent heat thermal energy storage (LHTES).…”

Section: Introductionmentioning

confidence: 99%

Configuration optimization of the honeycomb core in the latent heat thermal energy storage of a solar air heater: Experimental and numerical study

Sadri

Parsa

Saffar‐Avval

et al. 2021

Intl J of Energy Research

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Summary This article investigates the effect of embedding the aluminum honeycomb structure in latent heat thermal energy storage (LHTES) of a solar air heater (SAH) and proposes an optimal arrangement of the partial honeycomb core. The effect of placing an aluminum honeycomb core in the LHTES of a solar air heater in mass flow rates of 0.02 and 0.04 kg/s is investigated numerically. A finite volume method is utilized to solve the governing equations in the 3D domain. The phase change material's (PCM's) solid–liquid interface and temperature field are solved by the enthalpy‐porosity method and validated by experimental results. The honeycomb core embedded in paraffin is simulated as a composite material with effective thermal properties and local thermal equilibrium condition. The effect of the insertion of eight different honeycomb configurations in the latent heat storage is examined, and an optimized arrangement of the honeycomb structure is proposed. The experimental setup of the SAH is designed based on the optimized honeycomb configuration and is built in the laboratory. The performance of SAH and LHTES is analyzed for three cases: (1) in the presence of a honeycomb (case 8), (2) in the absence of a honeycomb (case 1), and (3) the optimized honeycomb structure (case 2). The results indicate that the honeycomb core in LHTES reduces the melting time by over 35%. Case 2 LHTES (honeycomb in 1/3 bottom portion) is suggested as the best honeycomb structure compared with other configurations. This structure is found to increase the energy storage rate by about 50%, while the energy storage density reduces by 2%. As the thermal performance of the SAH grows after the sunset, the warm air production lasts for a longer duration.

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“…It demonstrates that the PCM-based thermal energy is indeed the passive thermal management [15], i.e., the human efforts and the temperature controllers are not required for thermal regulation of buildings. However, despite much work on PCM-driven thermal management of buildings [16], the challenges posed by the PCM still exist, e.g., encompassing liquid drainage threats [17], compatibility with building materials (cement, sand, or their mixtures) [18] and temperature mismatch necessary for the human comfort zone [19]. The criterion of avoiding the temperature mismatch is dependent on the temperature of the human comfort zone [20].…”

Section: Introductionmentioning

confidence: 99%

“…The compatibility of the PCM thermal composite with building material [18] is the most significant in the overall design since the inherent properties of all the ingredients need to be satisfied. The building materials majorly include bricks, cement (which is itself a mixture composed of a wide variety of materials), sand, etc., providing various options where the PCM thermal composite can be applied.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analyses of Thermal Storage Tile-Bricks for Efficient Thermal Management of Buildings

et al. 2021

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Due to the tremendous increase in the population and emerging energy crisis, the surging demand for the thermal management of buildings has become essential. Thermal management of buildings is of high importance for maintaining optimum thermal comfort and controlling the drastic environmental impacts. To avoid high energy consumption strategies and continuous operation such as active air heaters and air conditioners, passive strategies driven by phase change material-based thermal storage are expected to leverage the energy challenges. This work attempts to present the form-stabilized thermal storage tile-bricks (TSTBs) that are fabricated by a combination of octadecane, phosphogypsum, kaolin clay and cement. The optimal percent contents of each entity were found with respect to the design criterion of form-stability and effective temperature control capacity. Two TSTBs with a thickness of 10 mm and 15 mm were constructed, which are then applied on ordinary clay bricks to build a prototype wall. The optimal TSTBs are experimentally and numerically evaluated by subjecting them to transient thermal performance analysis, providing longer temperature retardation (~3000 s) compared with ordinary clay bricks (~400 s). It is thus implied that TSTBs can provide a viable solution against energy mismanagement by inhibiting the heating in summer and reserving the cold in winter.

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Silica fume/capric acid-stearic acid PCM included-cementitious composite for thermal controlling of buildings: Thermal energy storage and mechanical properties

Cited by 93 publications

References 57 publications

Phase Change Material Evolution in Thermal Energy Storage Systems for the Building Sector, with a Focus on Ground-Coupled Heat Pumps

Phase Change Material Evolution in Thermal Energy Storage Systems for the Building Sector, with a Focus on Ground-Coupled Heat Pumps

Configuration optimization of the honeycomb core in the latent heat thermal energy storage of a solar air heater: Experimental and numerical study

Experimental and Numerical Analyses of Thermal Storage Tile-Bricks for Efficient Thermal Management of Buildings

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