Thermal characteristics of expanded perlite/paraffin composite phase change material with enhanced thermal conductivity using carbon nanotubes

Karaipekli, Ali; Biçer, Alper; Sarı, Ahmet; Tyagi, V.V.

doi:10.1016/j.enconman.2016.12.053

Cited by 498 publications

(138 citation statements)

References 59 publications

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“…Sixteen different fatty acids have been identified in mature stems of Agave plants, demonstrating the high potential of the genus as a candidate for fatty acid production in cell suspensions cultured in vitro. Among the n‐alkanes detected in the genus Agave is n‐docosane, a compound with many domestic and industrial applications in construction and in laboratories, and of high potential due to its energy storage capacity, lack of toxicity, non‐corrosive nature, low cost, and stability . Finally, the industrial wastes of Agave have been of interest for obtaining molecular hydrogen …”

Section: Biotechnological Advances In Agavementioning

confidence: 99%

Review and in silico analysis of fermentation, bioenergy, fiber, and biopolymer genes of biotechnological interest inAgaveL. for genetic improvement and biocatalysis

Tamayo‐Ordóñez

Ayil‐Gutiérrez

Tamayo-Ordóñez

et al. 2018

Biotechnology Progress

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Several of the over 200 known species of Agave L. are currently used for production of distilled beverages and biopolymers. The plants live in a wide range of stressful environments as a result of their resistance to abiotic stress (drought, salinity, and extreme temperature) and pathogens, which gives the genus potential for germplasm conservation and biotechnological applications that may minimize economic losses as a result of the global climate change. However, the limited knowledge in the genus of genome structure and organization hampers development of potential improved biotechnological applications by means of genetic manipulation and biocatalysis. We reviewed Agave and plant sequences in the GenBank NCBI database for identifying genes with biotechnological potential for fermentation, bioenergy, fiber improvement, and in vivo plant biopolymer production. Three-dimensional modeling of enzyme structures in plant accessions revealed structural differences in sucrose 1-fructosyltransferase, fructan 1-fructosyltransferase, fructan exohydrolase (1-FEH), cellulose synthase (CES), and glucanases (EGases) with possible effects in fructan, sugar, and biopolymer production. Although the coding genes of FEH and enzymes involved in biopolymer production (CES, sucrose synthase, and EGases) remain unidentified in Agave L., our results could aid isolation of such genes in Agave. By comparing nucleotide and amino acid sequences in accessions of Agave and other plants, knowledge may be gained about transcriptional regulation and enzymatic activity factors. Future study is needed of biotechnological application of Agave genes for crop breeding aided by genetic engineering and biocatalysis.

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Section: Biotechnological Advances In Agavementioning

confidence: 99%

Review and in silico analysis of fermentation, bioenergy, fiber, and biopolymer genes of biotechnological interest inAgaveL. for genetic improvement and biocatalysis

Tamayo‐Ordóñez

Ayil‐Gutiérrez

Tamayo-Ordóñez

et al. 2018

Biotechnology Progress

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“…In China, diatomite is abundant, attainable, and can be applied in many aspects, such as filtering agent, building materials, heat insulator, catalyst support, sorbent, and medicine ingredient . With provision for all mentioned above and recent research results, porous materials including diatomite are one of the suitable candidates for absorbing fatty acids as form‐stable PCM for TES …”

Section: Introductionmentioning

confidence: 99%

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

Jia

Wang

et al. 2020

Int J Energy Res

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Summary Using palmitic acid (PA) as an organic phase change material (PCM), a series of PA/diatomite composite PCMs (CPCMs) composed of PA absorbed into diatomite mesopores with different mass contents were made through direct impregnation method. Nitrogen adsorption‐desorption curves indicated the porous structure of diatomite with the specific surface area and the mesopore peak at 40 m2/g and 3 to 5 nm, respectively. The form‐stability measurement indicated that the maximum mass loading capacity of PA was 55 wt%. The melting temperature and fusion enthalpy of the PA/diatomite CPCM (55 wt%) were calculated from DSC at 63°C and 88 J/g, respectively. The thermal cycle test implied that the PA/diatomite CPCM with 55‐wt% PA loading showed excellent thermal reliability after 1000 thermal cycles. Moreover, the composite has thermal conductivity at 0.5810 W/m·K and enhanced thermal storage/release rate. PA/diatomite CPCM (55 wt% PA) was a suitable candidate for modern building energy saving and industrial solar energy.

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“…Recently, the scarcity of energy sources has been becoming a global issue . The conventional fossil fuels have almost been depleted worldwide, mainly because of the rapid economic development, population boom and rising thermal comfort levels .…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the scarcity of energy sources has been becoming a global issue. [1][2][3][4] The conventional fossil fuels have almost been depleted worldwide, mainly because of the rapid economic development, population boom and rising thermal comfort levels. [5][6][7] Latent heat thermal energy storage (LHTES) system using phase change materials (PCMs) is regarded as one of the most promising technique to reduce the dependency on fossil energy sources.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance and Interfacial Aspects of Kaolinite‐Based Stearic Acid Composite in the Presence of Nitric Acid

Yang

Zuo

et al. 2019

ChemistrySelect

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The effect of nitric acid on the thermal performance of stearic acid/kaolinite (SA/Kaol) composite phase change materials (PCMs) was studied. SA/Kaol was subjected to HNO3 manipulations at different acidity conditions. The results indicated that inferior thermal properties were detected at the acid‐treated composites with pH < 2. The latent heat value of SA/Kaol‐0.5 demonstrated an obvious reduction of about 30% compared with that of SA/Kaol, and its supercooling extent could reach as many as 11.2 °C while that of SA/Kaol was only 1.4 °C. Based on interfacial reaction analysis, the reduced crystallinity of SA should be attributed to the confinement effect originated from acid molecular clusters, while the supercooling behavior was caused by external ions. These ions could hinder SA molecules from adsorbing to the surface of crystal nucleus and thus delay the solidification process. As a result of segregation effect, the latent heat value of acid‐treated samples was deteriorated but the supercooling extent was relieved during thermal cycles. This work was the first that reported the effect of nitrogen oxides on PCMs. We believe that the results could play an enlightening role in the stability study of thermal property during PCMs practical applications.

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Thermal characteristics of expanded perlite/paraffin composite phase change material with enhanced thermal conductivity using carbon nanotubes

Cited by 498 publications

References 59 publications

Review and in silico analysis of fermentation, bioenergy, fiber, and biopolymer genes of biotechnological interest inAgaveL. for genetic improvement and biocatalysis

Review and in silico analysis of fermentation, bioenergy, fiber, and biopolymer genes of biotechnological interest inAgaveL. for genetic improvement and biocatalysis

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

Thermal Performance and Interfacial Aspects of Kaolinite‐Based Stearic Acid Composite in the Presence of Nitric Acid

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