Applications of solar water heating system with phase change material

Wang, Zhangyuan; Qiu, Feng; Yang, Wansheng; Zhao, Xudong

doi:10.1016/j.rser.2015.07.184

Cited by 128 publications

(69 citation statements)

References 62 publications

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“…Meanwhile, the change range of As contents in surface waters (0.36-2.80 μg L -1 ) were smaller than in botom waters (084-4.48 μg L -1 ). This indicated that As in bottom waters was transferring from surface waters by rapid sedimentation and accumulation [5][6][7].…”

Section: Vertical Variations Of Asmentioning

confidence: 99%

“…By means of vertical water's effect, As's contents in waters were changing while were passing water body from surface waters to bottom waters [5][6][7]. The growth and reproduction of marine phytoplankton were increasing rapidly in summer, resulting in a great deal of colloids in waters that enhancing the absorption ability of suspended particular matters in waters [9].…”

Section: Vertical Sedimentation Process Of Asmentioning

confidence: 99%

“…However, October was dry season and the source input of As from river runoff was weak, resulted in relative low As contents in surface waters. By means of vertical water's effect [5][6][7], a big part of As in surface waters was transferred to bottom waters continuously. Hence, As contents in bottom waters was relative high (4.48 μg L -1 ) in July since As contents in surface water was relative high, and the sedimentation and accumulation of As contents in bottom waters were rapid.…”

Section: Seasonal Variation Process Of Asmentioning

confidence: 99%

“…However, in July and October 1982, the horizontal distributions of As in bottom waters were increasing from the coastal waters in the southwest of the bay to the center waters in the southwest of the bay, the reason was that there were accumulation effect and dilution effect in waters, this indicated that the horizontal distributions of As in bottom waters might be mainly determined by other factors, i.e., vertical accumulation effect and vertical dilution effect [5][6][7].…”

Section: Horizontal Variations Processes Of Asmentioning

confidence: 99%

“…The terrigenous As was discharged or washed to rivers and streams, and emitted to atmosphere, etc., and as a result many marine bays have been polluted by As since ocean is the sink of pollutants [3][4]. By means of vertical water's effect [5][6], the sedimentation process of As was strongly impacting the distributions of As.…”

Section: Introductionmentioning

confidence: 99%

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Gravity Characteristic and Sedimentation of As in Jiaozhou Bay

Yang¹,

Zhang²,

Zhu³

et al. 2018

Proceedings of the 2018 6th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2018)

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Using investigation data on As in Jiaozhou Bay in 1982, this paper analyzed the seasonal variation, vertical variations and horizontal distributions of As, and revealed the gravity characteristic and sedimentation of As. Results showed that As's contents in surface and bottom waters in July 1982 were 0.36-2.80 μg L -1 and 0.88-4.48 μg L -1 , respectively, while in October 1982 were 0.58-1.62 μg L -1 and 0.84-1.16 μg L -1 , respectively. The pollution of As in Jiaozhou Bay 1982 was very slight. For seasonal variation, As's contents in surface waters were in order of summer>autumn, while in bottom waters were also in order of summer>autumn. In case of As contents in surface waters were relative high/low, As contents in bottom waters were also relative high/low. That was the result of gravity characteristics. The variations of As contents in surface waters were mainly determined by the changes of source input of river runoff, while the variations of As contents in bottom water were mainly determined by vertical water's effect. The sedimentaion process of As could be summarized that As was transferred to surface waters in marine bay from river runoff, was absorbed or assimilated by suspended particular matters or marine organism, and then was transported to bottom waters, and was finally fixed in sediments in sea bottom.

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Section: Vertical Variations Of Asmentioning

confidence: 99%

Section: Vertical Sedimentation Process Of Asmentioning

confidence: 99%

Section: Seasonal Variation Process Of Asmentioning

confidence: 99%

Section: Horizontal Variations Processes Of Asmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Gravity Characteristic and Sedimentation of As in Jiaozhou Bay

Yang¹,

Zhang²,

Zhu³

et al. 2018

Proceedings of the 2018 6th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2018)

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Discontinuous carbon fiber/polyamide composites with microencapsulated paraffin for thermal energy storage

Fredi

Dorigato

Unterberger³

et al. 2018

J of Applied Polymer Sci

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This work focuses on the development of multifunctional thermoplastic composites with thermal energy storage capability. A polyamide 12 (PA12) matrix was filled with a phase change material (PCM), constituted by paraffin microcapsules (Tmelt = 43 °C), and reinforced with carbon fibers (CFs) of two different lengths (chopped/CF “long”[CFL] and milled/CF “short” [CFS]). DSC tests showed that the melting/crystallization enthalpy values increase with the PCM weight fraction up to 60 J/g. The enthalpy was 41–94% of the expected value and decreased with an increase in the fiber content, because the capsules were damaged by the increasing viscosity and shear stresses during compounding. Long CFs increased the elastic modulus (+316%), tensile strength (+26%), and thermal conductivity (+54%) with respect to neat PA12. Thermal imaging tests evidenced a slower cooling for the samples containing PCM, and once again the CFS‐containing samples outperformed those with CFL, due to the higher effective PCM content. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47408.

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Application of the thermal energy storage concept to novel epoxy–short carbon fiber composites

Dorigato

Fredi

Pegoretti

2019

J of Applied Polymer Sci

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For the first time, multifunctional epoxy-short carbon fiber reinforced composites suitable for thermal energy storage technology were developed. Paraffin microcapsules (MC) and short carbon fibers (CFs) were added at different relative amounts to an epoxy matrix, and the microstructural and thermomechanical properties of the resulting materials were investigated. Scanning electron microscopy images of the composites showed a uniform distribution of the capsules within the matrix, with a rather good interfacial adhesion, while the increase in the polymer viscosity at elevated CF and MC amounts caused an increase in the void content. Differential scanning calorimetry tests revealed that melting enthalpy values (up to 60 J/g) can be obtained at high MC concentrations. The mixing and thermal curing of the composites did not lead to breakage of the capsules and to the consequent leakage of the paraffin out of the epoxy matrix. The thermal stability of the prepared composites is not negatively affected by the MC addition, and the temperatures at which the thermal degradation process begins were far above the curing or service temperature of the composites. Flexural and impact tests highlighted that the presence of MC reduces the mechanical properties of the samples, while CF positively contributes to retaining the original stiffness and mechanical resistance.

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Applications of solar water heating system with phase change material

Cited by 128 publications

References 62 publications

Gravity Characteristic and Sedimentation of As in Jiaozhou Bay

Gravity Characteristic and Sedimentation of As in Jiaozhou Bay

Discontinuous carbon fiber/polyamide composites with microencapsulated paraffin for thermal energy storage

Application of the thermal energy storage concept to novel epoxy–short carbon fiber composites

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