scholarly journals Optimization of Energy Efficiency Based on Phase Change Materials used in Solar Collector by Taguchi Method

2019 ◽  
Vol 7 (5) ◽  
pp. 3616-3621
Author(s):  
Yakoob Kolipak
Keyword(s):  
Energy Efficiency ◽  
Taguchi Method ◽  
Phase Change ◽  
Solar Collector ◽  
Phase Change Materials ◽  
Materials Used

scholarly journals A Review of New Solar Still Design Comprising a Five-Sided Glass Cover and Equipped with an External Tank for PCM

2021 ◽  
Vol 877 (1) ◽  
pp. 012038
Author(s):  
Abbas Sahi Shareef ◽  
Hayder Jabbar Kurji ◽  
Hassan Abdulameer Matrood
Keyword(s):  
Melting Point ◽  
Phase Change ◽  
Solar Collector ◽  
Phase Change Materials ◽  
Review Paper ◽  
Pure Water ◽  
Solar Still ◽  
Glass Cover ◽  
Solar Distillation ◽  
Change Material

Abstract Various human activities have led to the consumption of large quantities of pure water, which has led researchers to find efficient and economical methods for desalinating seawater and water containing impurities. In this review paper, solar energy where it is permanent, abundant and environmentally friendly, to produce pure water was discussed using a new solar distillation device, representing the paper’s novelty. The distillation was designed and used in the way led to increase efficiency and improve productivity by adding a solar collector to the system and equipped with a tank containing phase change material (PCM). It has a low melting point and can change the phase by absorbing the system’s latent heat to maintain the system’s temperature. Which contributes to increasing the distillation period even after sunset, thus increasing the daily productivity of freshwater. Using phase change materials will increase distillation hours from (3-4) hours after sunset, increasing the amount of production between (75 - 90) %.

The Effect of Phase Change Materials on the Physical, Thermal and Mechanical Properties of Cement

Sci ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 27 ◽  
Author(s):  
Zakaria Dakhli ◽  
Khaled Chaffar ◽  
Zoubeir Lafhaj
Keyword(s):  
Phase Change ◽  
Development Strategy ◽  
Phase Change Materials ◽  
Materials Science ◽  
Current Trend ◽  
Building Construction ◽  
Concrete Mixtures ◽  
Materials Used ◽  
Save Energy ◽  
Change Material

When focusing on materials science in civil engineering, the current trend is to investigate the use of innovative solutions in order to enhance thermal and energy performances. This trend is amplified with the need for a sustainable development strategy for the construction sector. This paper assesses the integration of a Phase Change Material (PCM) in cement intended for building construction. The key characteristic of PCMs is their capacity to absorb energy and restore it. In building construction, this feature could be harnessed to save energy by incorporating PCMs in the materials used. In this study, passive integration of PCM in cement was tested and thermal properties of such an integration was assessed. The results provide insights into how PCMs affect cement as part of the concrete mixture, thus identifying the contribution of PCM-based cements in concrete mixtures.

scholarly journals Phase change materials and energy efficiency of buildings: A review of knowledge

2020 ◽  
Vol 27 ◽  
pp. 101083 ◽  
Author(s):  
Sandra Raquel Leite da Cunha ◽  
José Luís Barroso de Aguiar
Keyword(s):  
Energy Efficiency ◽  
Phase Change ◽  
Phase Change Materials

Design of an Initialization Circuit Used in Phase Change Memory Chip

2014 ◽  
Vol 543-547 ◽  
pp. 471-474
Author(s):  
Qian Wang ◽  
Hou Peng Chen ◽  
Yi Yun Zhang ◽  
Xi Fan ◽  
Xi Li ◽  
...  
Keyword(s):  
Phase Change ◽  
High Resistance ◽  
Phase Change Materials ◽  
Phase Change Memory ◽  
Memory Cells ◽  
Memory Chip ◽  
Grain Sizes ◽  
Reset Operation ◽  
Materials Used ◽  
Change Memory

Design of a novel initialization circuit is presented in this paper. The initialization circuit is used to supply initialization current to the first test of phase change memory chip after delivery. Inhomogeneous crystalline grain sizes appear in phase change materials used in memory cells during manufacturing process. The crystalline phase with low resistance will convert to amorphous phase with high resistance after initialization, which is called RESET the memory cells to 0. Normal RESET operation current is not high enough to RESET great grain, which deteriorates bit yield of phase change memory chip. In comparison, the higher initialization current will increase bit yield observably.

An Economic Analysis and Calculation for Selecting of the Phase-Change Heat Storage Materials Used in the Roof with a Solar Energy Storage Ventilation Systems

2012 ◽  
Vol 479-481 ◽  
pp. 578-585
Author(s):  
Juan Zhao ◽  
Jun Lu ◽  
Peng Chen ◽  
Ya Qin Zhang ◽  
Liao Liao
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Economic Analysis ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Solar Energy Storage ◽  
Heat Storage Materials ◽  
Materials Used ◽  
Set Up

the experiments set up a roof model with a solar energy heat storage ventilation. According to the actual demands of experiments, through an economic analysis it results the preliminary investment of the solar energy storage ventilationthe system is between 307~367Yuan/m2 by calculating a energy balance in some way and choosing some type of heat storage phase change materials with a suitable quantity to fit for the model.

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